82-Night Cruise on Seven Seas MarinerGrand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) - Weather

Departing Southampton, England on July 30, 2027, the RSSC Cruises ship Seven Seas Mariner runs this 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) sailing. It's a classic Mediterranean cruise. Travelers sailing in July can generally expect mild, changeable weather that can turn cool and wet. Ports of call include Southampton, England, Honfleur, France, Guernsey, Channel Islands, with 65 more along the way. Scroll the daily outlook below to pack smart for every port of call.

1. Day 1 — Friday, Jul 30, 2027 — Southampton, England

   Southampton, England is a scheduled port of call on day 1 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 71°F.

2. Day 2 — Saturday, Jul 31, 2027 — Honfleur, France

   Honfleur, France is a scheduled port of call on day 2 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 74°F.

3. Day 3 — Sunday, Aug 1, 2027 — Guernsey, Channel Islands

   Guernsey, Channel Islands is a scheduled port of call on day 3 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 63°F.

4. Day 4 — Monday, Aug 2, 2027 — St Malo, France

   St Malo, France is a scheduled port of call on day 4 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 72°F.

5. Day 5 — Tuesday, Aug 3, 2027 — Brest, France

   Brest, France is a scheduled port of call on day 5 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 67°F.

6. Day 6 — Wednesday, Aug 4, 2027 — At Sea

   Day 6 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

7. Day 7 — Thursday, Aug 5, 2027 — Bordeaux, France

   Bordeaux, France is a scheduled port of call on day 7 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 84°F.

8. Day 8 — Friday, Aug 6, 2027 — Bordeaux, France

   Bordeaux, France is a scheduled port of call on day 8 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 84°F.

9. Day 9 — Saturday, Aug 7, 2027 — St Jean de Luz, France

   St Jean de Luz, France is a scheduled port of call on day 9 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 76°F.

10. Day 10 — Sunday, Aug 8, 2027 — Bilbao, Spain

    Bilbao, Spain is a scheduled port of call on day 10 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 79°F.

11. Day 11 — Monday, Aug 9, 2027 — La Coruna, Spain

    La Coruna, Spain is a scheduled port of call on day 11 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 77°F.

12. Day 12 — Tuesday, Aug 10, 2027 — At Sea

    Day 12 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

13. Day 13 — Wednesday, Aug 11, 2027 — Lisbon, Portugal

    Lisbon, Portugal is a scheduled port of call on day 13 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: partially cloudy with highs near 78°F.

14. Day 14 — Thursday, Aug 12, 2027 — Portimao, Portugal

    Portimao, Portugal is a scheduled port of call on day 14 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: clear with highs near 78°F.

15. Day 15 — Friday, Aug 13, 2027 — Cadiz, Spain

    Cadiz, Spain is a scheduled port of call on day 15 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner. Expected weather: clear with highs near 81°F.

16. Day 16 — Saturday, Aug 14, 2027 — Tangier, Morocco

    Tangier, Morocco is a scheduled port of call on day 16 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

17. Day 17 — Sunday, Aug 15, 2027 — Malaga, Spain

    Malaga, Spain is a scheduled port of call on day 17 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

18. Day 18 — Monday, Aug 16, 2027 — At Sea

    Day 18 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

19. Day 19 — Tuesday, Aug 17, 2027 — Cartagena, Spain

    Cartagena, Spain is a scheduled port of call on day 19 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

20. Day 20 — Wednesday, Aug 18, 2027 — Alicante, Spain

    Alicante, Spain is a scheduled port of call on day 20 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

21. Day 21 — Thursday, Aug 19, 2027 — Ibiza, Spain

    Ibiza, Spain is a scheduled port of call on day 21 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

22. Day 22 — Friday, Aug 20, 2027 — Palma De Mallorca, Spain

    Palma De Mallorca, Spain is a scheduled port of call on day 22 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

23. Day 23 — Saturday, Aug 21, 2027 — At Sea

    Day 23 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

24. Day 24 — Sunday, Aug 22, 2027 — Barcelona, Spain

    Barcelona, Spain is a scheduled port of call on day 24 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

25. Day 25 — Monday, Aug 23, 2027 — Palamos, Spain

    Palamos, Spain is a scheduled port of call on day 25 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

26. Day 26 — Tuesday, Aug 24, 2027 — At Sea

    Day 26 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

27. Day 27 — Wednesday, Aug 25, 2027 — St Tropez, France

    St Tropez, France is a scheduled port of call on day 27 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

28. Day 28 — Thursday, Aug 26, 2027 — Monaco

    Monaco is a scheduled port of call on day 28 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

29. Day 29 — Friday, Aug 27, 2027 — Portofino, Italy

    Portofino, Italy is a scheduled port of call on day 29 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

30. Day 30 — Saturday, Aug 28, 2027 — Livorno, Italy

    Livorno, Italy is a scheduled port of call on day 30 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

31. Day 31 — Sunday, Aug 29, 2027 — Ajaccio, Corsica

    Ajaccio, Corsica is a scheduled port of call on day 31 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

32. Day 32 — Monday, Aug 30, 2027 — Bastia, Corsica

    Bastia, Corsica is a scheduled port of call on day 32 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

33. Day 33 — Tuesday, Aug 31, 2027 — At Sea

    Day 33 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

34. Day 34 — Wednesday, Sep 1, 2027 — Golfo Aranci, Sardinia

    Golfo Aranci, Sardinia is a scheduled port of call on day 34 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

35. Day 35 — Thursday, Sep 2, 2027 — Civitavecchia, Italy

    Civitavecchia, Italy is a scheduled port of call on day 35 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

36. Day 36 — Friday, Sep 3, 2027 — Salerno, Italy

    Salerno, Italy is a scheduled port of call on day 36 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

37. Day 37 — Saturday, Sep 4, 2027 — Messina, Sicily

    Messina, Sicily is a scheduled port of call on day 37 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

38. Day 38 — Sunday, Sep 5, 2027 — La Valletta, Malta

    La Valletta, Malta is a scheduled port of call on day 38 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

39. Day 39 — Monday, Sep 6, 2027 — At Sea

    Day 39 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

40. Day 40 — Tuesday, Sep 7, 2027 — Kotor, Montenegro

    Kotor, Montenegro is a scheduled port of call on day 40 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

41. Day 41 — Wednesday, Sep 8, 2027 — Dubrovnik, Croatia

    Dubrovnik, Croatia is a scheduled port of call on day 41 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

42. Day 42 — Thursday, Sep 9, 2027 — Rijeka, Croatia

    Rijeka, Croatia is a scheduled port of call on day 42 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

43. Day 43 — Friday, Sep 10, 2027 — Venice, Italy

    Venice, Italy is a scheduled port of call on day 43 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

44. Day 44 — Saturday, Sep 11, 2027 — At Sea

    Day 44 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

45. Day 45 — Sunday, Sep 12, 2027 — Rijeka, Croatia

    Rijeka, Croatia is a scheduled port of call on day 45 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

46. Day 46 — Monday, Sep 13, 2027 — Split, Croatia

    Split, Croatia is a scheduled port of call on day 46 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

47. Day 47 — Tuesday, Sep 14, 2027 — Bari, Italy

    Bari, Italy is a scheduled port of call on day 47 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

48. Day 48 — Wednesday, Sep 15, 2027 — Igoumenitsa, Greece

    Igoumenitsa, Greece is a scheduled port of call on day 48 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

49. Day 49 — Thursday, Sep 16, 2027 — Katakolon, Greece

    Katakolon, Greece is a scheduled port of call on day 49 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

50. Day 50 — Friday, Sep 17, 2027 — At Sea

    Day 50 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

51. Day 51 — Saturday, Sep 18, 2027 — Monemvasia, Greece

    Monemvasia, Greece is a scheduled port of call on day 51 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

52. Day 52 — Sunday, Sep 19, 2027 — Mykonos, Greece

    Mykonos, Greece is a scheduled port of call on day 52 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

53. Day 53 — Monday, Sep 20, 2027 — Piraeus, Greece

    Piraeus, Greece is a scheduled port of call on day 53 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

54. Day 54 — Tuesday, Sep 21, 2027 — Chania, Crete

    Chania, Crete is a scheduled port of call on day 54 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

55. Day 55 — Wednesday, Sep 22, 2027 — Santorini, Greece

    Santorini, Greece is a scheduled port of call on day 55 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

56. Day 56 — Thursday, Sep 23, 2027 — Mykonos, Greece

    Mykonos, Greece is a scheduled port of call on day 56 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

57. Day 57 — Friday, Sep 24, 2027 — At Sea

    Day 57 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

58. Day 58 — Saturday, Sep 25, 2027 — Bodrum, Turkey

    Bodrum, Turkey is a scheduled port of call on day 58 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

59. Day 59 — Sunday, Sep 26, 2027 — Kusadasi, Turkey

    Kusadasi, Turkey is a scheduled port of call on day 59 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

60. Day 60 — Monday, Sep 27, 2027 — Dikili, Turkey

    Dikili, Turkey is a scheduled port of call on day 60 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

61. Day 61 — Tuesday, Sep 28, 2027 — Bozcaada

    Bozcaada is a scheduled port of call on day 61 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

62. Day 62 — Wednesday, Sep 29, 2027 — Istanbul, Turkey

    Istanbul, Turkey is a scheduled port of call on day 62 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

63. Day 63 — Thursday, Sep 30, 2027 — Istanbul, Turkey

    Istanbul, Turkey is a scheduled port of call on day 63 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

64. Day 64 — Friday, Oct 1, 2027 — At Sea

    Day 64 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

65. Day 65 — Saturday, Oct 2, 2027 — Rhodes, Greece

    Rhodes, Greece is a scheduled port of call on day 65 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

66. Day 66 — Sunday, Oct 3, 2027 — Limassol, Cyprus

    Limassol, Cyprus is a scheduled port of call on day 66 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

67. Day 67 — Monday, Oct 4, 2027 — Haifa, Israel

    Haifa, Israel is a scheduled port of call on day 67 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

68. Day 68 — Tuesday, Oct 5, 2027 — Ashdod, Israel

    Ashdod, Israel is a scheduled port of call on day 68 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

69. Day 69 — Wednesday, Oct 6, 2027 — At Sea

    Day 69 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

70. Day 70 — Thursday, Oct 7, 2027 — Alexandria, Egypt

    Alexandria, Egypt is a scheduled port of call on day 70 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

71. Day 71 — Friday, Oct 8, 2027 — Alexandria, Egypt

    Alexandria, Egypt is a scheduled port of call on day 71 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

72. Day 72 — Saturday, Oct 9, 2027 — At Sea

    Day 72 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

73. Day 73 — Sunday, Oct 10, 2027 — Piraeus, Greece

    Piraeus, Greece is a scheduled port of call on day 73 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

74. Day 74 — Monday, Oct 11, 2027 — Mykonos, Greece

    Mykonos, Greece is a scheduled port of call on day 74 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

75. Day 75 — Tuesday, Oct 12, 2027 — Katakolon, Greece

    Katakolon, Greece is a scheduled port of call on day 75 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

76. Day 76 — Wednesday, Oct 13, 2027 — At Sea

    Day 76 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

77. Day 77 — Thursday, Oct 14, 2027 — Trapani, Italy

    Trapani, Italy is a scheduled port of call on day 77 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

78. Day 78 — Friday, Oct 15, 2027 — Tunis, Tunisia

    Tunis, Tunisia is a scheduled port of call on day 78 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

79. Day 79 — Saturday, Oct 16, 2027 — La Valletta, Malta

    La Valletta, Malta is a scheduled port of call on day 79 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

80. Day 80 — Sunday, Oct 17, 2027 — At Sea

    Day 80 of 83 is a day at sea aboard Seven Seas Mariner, cruising between ports on the Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) itinerary.

81. Day 81 — Monday, Oct 18, 2027 — Iraklion, Greece

    Iraklion, Greece is a scheduled port of call on day 81 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

82. Day 82 — Tuesday, Oct 19, 2027 — Kusadasi, Turkey

    Kusadasi, Turkey is a scheduled port of call on day 82 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.

83. Day 83 — Wednesday, Oct 20, 2027 — Piraeus, Greece

    Piraeus, Greece is a scheduled port of call on day 83 of the 82-night Grand Mediterranean Odyssey London (Southampton) To Athens (Piraeus) cruise on Seven Seas Mariner.