Average Water Temps for Key West

  Jan Feb March April May June July Aug Sept Oct Nov Dec
° F 69 70 75 79 83 86 87 87 86 82 76 72
° C 21 21 24 26 28 30 31 31 30 28 24 22

Average High Air Temps for Key West

  Jan Feb March April May June July Aug Sept Oct Nov Dec
° F 75 75 79 82 85 88 89 89 88 84 80 76
° C 24 24 26 28 29 31 32 32 31 29 27 24

Average Low Air Temps for Key West

  Jan Feb March April May June July Aug Sept Oct Nov Dec
° F 65 66 69 72 76 79 80 79 79 76 71 67
° C 18 19 21 22 24 26 27 26 26 24 22 21

All-Time Record High for Key West 97° F (36° C) July, 19, 1880
All-Time Record Low for Key West 41° F (5° C) Jan. 13, 1981

Average Rainfall

  Jan Feb March April May June July Aug Sept Oct Nov Dec
inches 2.0 1.8 1.7 1.8 3.5 5.1 3.6 5.0 5.9 4.4 2.9 2.0
cm 5.1 4.6 4.3 4.6 8.9 12.9 9.1 12.7 14.9 11.2 7.4 5.1

Average Sunset Times

Jan Feb March April May June July Aug Sept Oct Nov Dec
5:50 pm 6:16 pm 6:31 pm 7:45 pm 7:58 pm 8:15 pm 8:22 pm 8:11 pm 7:45 pm 7:13 pm 5:47 pm 5:38 pm