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

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

Key West Summary

Description	Value
Current water temperature	/
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

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Key West water temperature by month

°F

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

°C

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 highest water temperature will be reached in August with around 86.5°F / 30.3°C. The lowest 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.

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Key West weather today & 14-day weather forecast

7-day weather forecast
+9-day forecast

7-day weather forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Nov. 20	Thunderstorm with rain	82 °F 76°F	28 °C 25°C	3mph (5km/h) southwest	0in (4mm) 55 %	78%
Nov. 21	Scattered clouds	77 °F 69°F	25 °C 20°C	4mph (7km/h) north-northwest	0in (1mm) 15 %	71%
Nov. 22	Scattered clouds	74 °F 67°F	24 °C 20°C	4mph (6km/h) north-northwest	0in (0mm) 0 %	64%
Nov. 23	Few clouds	73 °F 67°F	23 °C 20°C	3mph (5km/h) southeast	0in (0mm) 0 %	65%
Nov. 24	Few clouds	74 °F 67°F	23 °C 19°C	2mph (4km/h) northeast	0in (0mm) 0 %	63%
Nov. 25	Scattered clouds	79 °F 72°F	26 °C 22°C	3mph (4km/h) east-northeast	0in (0mm) 10 %	73%
Nov. 26	Broken clouds	76 °F 70°F	25 °C 21°C	2mph (4km/h) northeast	0in (0mm) 10 %	81%

+9-day forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Nov. 27	Few clouds	78 °F 71°F	26 °C 22°C	2mph (4km/h) northeast	0in (1mm) 15 %	81%
Nov. 28	Few clouds	79 °F 73°F	26 °C 23°C	2mph (4km/h) northeast	0in (0mm) 20 %	83%
Nov. 29	Scattered clouds	77 °F 72°F	25 °C 22°C	3mph (5km/h) northeast	0in (0mm) 15 %	80%
Nov. 30	Clear Sky	78 °F 69°F	25 °C 21°C	3mph (6km/h) north-northeast	0in (0mm) 0 %	77%
Dec. 01	Scattered clouds	79 °F 69°F	26 °C 21°C	7mph (11km/h) east-northeast	0in (0mm) 20 %	67%
Dec. 02	Broken clouds	80 °F 71°F	27 °C 22°C	6mph (10km/h) east-northeast	0in (0mm) 10 %	72%
Dec. 03	Scattered clouds	80 °F 71°F	27 °C 22°C	5mph (8km/h) east-northeast	0in (0mm) 20 %	75%
Dec. 04	Broken clouds	80 °F 71°F	26 °C 22°C	5mph (8km/h) east-northeast	0in (0mm) 20 %	72%
Dec. 05	Scattered clouds	80 °F 69°F	26 °C 20°C	4mph (7km/h) northeast	0in (0mm) 10 %	78%

Key West weather by month / climate table

°F

	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%

°C

	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%

January is the driest at 0in / 0mm and September the wettest month with 4.5in / 115.1mm. With an average temperature of 82.6°F / 28.1°C, August is the warmest month in a year. January is the coldest with 67.1°F / 19.5°C average temperature.

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

gulf of mexico