Key West Water Temperature

Key West is a beautiful sandy island on the straits of Florida. Around 90km from Cuba, it is a very popular tourist destination for those seeking some relaxation and pleasure in the sun.


It is also an historic cultural hotspot, with famous authors and playwrights such as Tennessee Williams and Ernest Hemingway known to have lived there.

Key West is a town close to gulf of mexico. tropical savanna climate with wet summer would be the climate here. August is the month with the highest water temperature at 86.5°F / 30.3°C. The month with the lowest is January with an average water temperature of 73.6°F / 23.1°C. The avg. air temperature is around 82.6°F / 28.1°C, August is the month with the highest temperature. January is the coolest with 67.1°F / 19.5°C average air temperature. January is the month with the min. precipitation of 0in / 0mm and September with the max. precipitation in a year with 4.5in / 115.1mm. If you plan to visit this place, the month March, April, May, June, September, October, November would be the best time.

Key West Summary

Description Value
Current water temperature / 25 °C
Warmest Month Water Temperature: August with 86.5°F / 30.3°C
Coldest Month Water Temperature: January with 73.6°F / 23.1°C
Warmest Month Air Temperature: August with 82.6°F / 28.1°C
Coldest Month Air Temperature: January with 67.1°F / 19.5°C
Wettest Month: September with 4.5in / 115.1mm
Driest Month: January with 0in / 0mm
Highest Humidity September with 79.1%
Lowest Humidity April with 64.4%
Best Time to Visit: March, April, May, June, September, October, November
Climate Classification tropical savanna climate with wet summer

Key West water temperature by month

gulf of mexico water temperature by month

Max. Water

Temperature (°F)

ø. Water

Temperature (°F)

Min. Water

Temperature (°F)

January

75.2 73.8 72.7

February

74.7 73.6 73

March

76.3 75.2 74.1

April

79 77.5 76.3

May

82.2 80.6 78.8

June

84.9 83.8 82.4

July

86.4 85.5 84.7

August

86.7 86.4 85.8

September

86.2 85.5 84.4

October

84.6 83.1 80.8

November

80.8 79 77.4

December

77.2 76.1 74.8

gulf of mexico water temperature by month

Max. Water

Temperature (°C)

ø. Water

Temperature (°C)

Min. Water

Temperature (°C)

January

24 23.2 22.6

February

23.7 23.1 22.8

March

24.6 24 23.4

April

26.1 25.3 24.6

May

27.9 27 26

June

29.4 28.8 28

July

30.2 29.7 29.3

August

30.4 30.2 29.9

September

30.1 29.7 29.1

October

29.2 28.4 27.1

November

27.1 26.1 25.2

December

25.1 24.5 23.8

The warmest water temperature are in August with around 86.5°F / 30.3°C. The coldest in January with an average water temperature of 73.6°F / 23.1°C.

Key West is characterised by its warm waters. In the recommended visiting period, which runs from March until May, the water temperature typically falls between 75 and 82 degrees.

The water temperature at Key West is warmest in July and August, when it reaches around 87 degrees, however this is also the time of the hurricane season. Swimmers who want clear skies and warm waters should aim to visit between March and May, then. But swimmers who are happy to brave the rain for even warmer waters could consider visiting in June, July, or August.


Key West weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Apr. 09
Broken clouds
74 °F
71°F
23 °C
22°C
4mph (7km/h)
east-southeast
0in (0mm)
20 %
84%
Apr. 10
Overcast clouds
75 °F
71°F
24 °C
21°C
5mph (8km/h)
east-southeast
0in (1mm)
20 %
95%
Apr. 11
Overcast clouds
74 °F
73°F
23 °C
23°C
5mph (7km/h)
southeast
0in (0mm)
10 %
97%
Apr. 12
Few clouds
79 °F
77°F
26 °C
25°C
3mph (4km/h)
south
0in (3mm)
50 %
85%
Apr. 13
Few clouds
78 °F
76°F
25 °C
25°C
3mph (5km/h)
east
0in (1mm)
25 %
84%
Apr. 14
Broken clouds
78 °F
73°F
26 °C
23°C
4mph (6km/h)
east-southeast
0in (0mm)
15 %
73%
Apr. 15
Scattered clouds
78 °F
76°F
25 °C
25°C
2mph (3km/h)
west-southwest
0in (0mm)
0 %
76%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Apr. 16
Scattered clouds
82 °F
76°F
28 °C
24°C
2mph (3km/h)
south
0in (0mm)
10 %
85%
Apr. 17
Scattered clouds
80 °F
77°F
27 °C
25°C
4mph (6km/h)
south
0in (0mm)
0 %
81%
Apr. 18
Thunderstorm with rain
78 °F
77°F
26 °C
25°C
3mph (5km/h)
west-southwest
0in (5mm)
65 %
87%
Apr. 19
Overcast clouds
77 °F
74°F
25 °C
23°C
2mph (4km/h)
south
0in (1mm)
30 %
85%
Apr. 20
Few clouds
77 °F
73°F
25 °C
23°C
3mph (5km/h)
southwest
0in (2mm)
35 %
79%
Apr. 21
Overcast clouds
77 °F
76°F
25 °C
25°C
2mph (4km/h)
southeast
0in (3mm)
45 %
82%
Apr. 22
Scattered clouds
77 °F
75°F
25 °C
24°C
3mph (4km/h)
east
0in (1mm)
25 %
81%
Apr. 23
Overcast clouds
77 °F
76°F
25 °C
25°C
4mph (7km/h)
east
0in (0mm)
10 %
80%
Apr. 24
Overcast clouds
78 °F
76°F
25 °C
24°C
4mph (7km/h)
east-southeast
0in (5mm)
60 %
80%

Key West weather by month / climate table

Max.

Temperature

°F

ø.

Temperature

°F

Min.

Temperature

(°F)

Precip.

(in)

Rainy Days

(d)

Rel. Humidity

(%)

January

78.3 67.1 58.3 0 0 68.5%

February

80.1 69.4 59.4 0.1 0 69.8%

March

81.9 71.8 62.4 0.1 0 65.1%

April

85.3 75.6 66.9 0 0 64.4%

May

87.4 79 70.5 1 0 67.2%

June

88.2 81.1 75 4.5 15 76.3%

July

89.4 82.2 76.8 3.3 14 76.4%

August

89.6 82.6 77.5 4.5 14 77%

September

88.2 81 75.7 4.5 18 79.1%

October

86.4 78.3 70 1.6 0 73.7%

November

83.3 73.2 63.3 0.1 0 68.8%

December

79.3 70.5 62.4 0.2 0 71.5%

Max.

Temperature

°C

ø.

Temperature

°C

Min.

Temperature

(°C)

Precip.

(mm)

Rainy Days

(d)

Rel. Humidity

(%)

January

25.7 19.5 14.6 0 0 68.5%

February

26.7 20.8 15.2 1.8 0 69.8%

March

27.7 22.1 16.9 1.7 0 65.1%

April

29.6 24.2 19.4 0 0 64.4%

May

30.8 26.1 21.4 26.3 0 67.2%

June

31.2 27.3 23.9 114.5 15 76.3%

July

31.9 27.9 24.9 83 14 76.4%

August

32 28.1 25.3 114.4 14 77%

September

31.2 27.2 24.3 115.1 18 79.1%

October

30.2 25.7 21.1 40.8 0 73.7%

November

28.5 22.9 17.4 1.8 0 68.8%

December

26.3 21.4 16.9 3.9 0 71.5%
The warmest avg. temperature is around 82.6°F / 28.1°C, August is the month with the highest temperature. January is the coolest with 67.1°F / 19.5°C average air temperature. January is the month with the min. precipitation of 0in / 0mm and September with the max. precipitation in a year with 4.5in / 115.1mm.

Best time to visit Key West

Key West is a popular tourist destination, and there are several factors to keep in mind when deciding which time to visit. This region tends to be very popular the Christmas holidays, whilst the hurricane season falls between June and November.

Thus, one of the best times to visit Key West is between March and May, as the area will be quieter and less expensive, and the temperature will be a delightfully warm 70 or 80 degrees. Key West has its own airport, with connecting flights from major airports such as Florida and the Bahamas, making it easily reachable by plane.

Activities & POI in Key West

Type of Activity List
Beach Smathers Beach, South Beach, Truman Beach, Higgs Beach
Marina for Sailing, Boat adventures, fishing Key West Bight Marina, Oceanside Marina, Murray Marine, Key West Harbour
Attraction Southernmost Point, Key West Extreme Adventures, Southernmost point in the US, Nancy Forrester's Secret Garden, Dolphin Watch, Mallory Square
Golf Course Key West City Golf Club
Caravan Site Boyd's Key West Campground

Picture Copyright: Flickr CC 2.0 jdeeringdavis

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