Sea weather in Key West in Florida All the beach weather in Key West

All the essential weather information for enjoying the beach in Key West in Florida, for swimming, tanning or water sports! Our sea weather data is reliable, easy to read and updated every day.

Weather: When should you go to the beach in Key West over the next 7 days?

Discover the best moment to go to the beach in Key West in Florida this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Key West. You can see full forecasts by clicking on the day you want to see in the table below.

Date Outside temp. Our opinion
Thursday 4 December 202576°F to 77°Fdiscouraged
Friday 5 December 202577°F to 79°Fdiscouraged
Saturday 6 December 202577°F to 77°Frecommended
Sunday 7 December 202570°F to 79°Frecommended
Monday 8 December 202574°F to 77°Fdiscouraged
Tuesday 9 December 202574°F to 76°Fdiscouraged
Wednesday 10 December 202576°F to 77°Frecommended

Sea Weather: Your daily and hourly sea weather in Key West

Sea weather on Thursday 4 December 2025

On Thursday 4 December 2025, the sun will rise at 06:57 and will set at 17:39 on the beach(es) of Key West. The outside temperature will be a high of 77°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 13.7mph km/h (with gusts up to 19.9mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature24°C (74°F)24°C (74°F)24°C (76°F)25°C (76°F)24°C (75°F)25°C (76°F)24°C (75°F)25°C (76°F)
Perceived temperature26°C (78°F)26°C (78°F)26°C (79°F)27°C (80°F)26°C (79°F)26°C (80°F)26°C (79°F)27°C (80°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%84%84%84%83%80%81%82%
Barometric pressure1019 hPa1018 hPa1018 hPa1020 hPa1019 hPa1017 hPa1017 hPa1019 hPa
Cloud cover8%10%79%78%70%17%15%24%
Heat index26°C (78°F)26°C (78°F)26°C (79°F)27°C (80°F)26°C (79°F)26°C (80°F)26°C (79°F)27°C (80°F)
Dew point20°C (69°F)21°C (69°F)21°C (71°F)22°C (71°F)21°C (70°F)21°C (69°F)20°C (69°F)21°C (70°F)
Wind
Speed20km/h (12mph)14km/h (9mph)17km/h (11mph)22km/h (14mph)17km/h (11mph)18km/h (11mph)19km/h (12mph)20km/h (12mph)
Gusts27km/h (17mph)20km/h (12mph)24km/h (15mph)31km/h (19mph)27km/h (17mph)28km/h (18mph)32km/h (20mph)29km/h (18mph)
Direction 18°
NNE
52°
NE
92°
E
85°
E
65°
ENE
83°
E
91°
E
87°
E
Wind chill24°C (74°F)24°C (74°F)24°C (76°F)25°C (76°F)24°C (75°F)25°C (76°F)24°C (75°F)25°C (76°F)
Waves
Height0.5m (1.6ft)0.5m (1.7ft)0.5m (1.7ft)0.5m (1.7ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.5ft)0.4m (1.4ft)
Direction 285°
WNW
287°
WNW
288°
WNW
285°
WNW
282°
WNW
285°
WNW
284°
WNW
283°
WNW
Period5.4 sec.5.4 sec.5.8 sec.5.9 sec.5.9 sec.5.7 sec.5.7 sec.5.6 sec.
Significant height0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)
Sea water temperature
Water temperature23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)

Sea weather on Friday 5 December 2025

On Friday 5 December 2025, the sun will rise at 06:57 and will set at 17:39 on the beach(es) of Key West. The outside temperature will be a high of 79°F t and a low of 77°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 13.1mph km/h (with gusts up to 18mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (76°F)25°C (76°F)25°C (77°F)26°C (78°F)25°C (76°F)25°C (77°F)25°C (77°F)25°C (78°F)
Perceived temperature27°C (80°F)27°C (80°F)27°C (81°F)27°C (81°F)27°C (80°F)27°C (81°F)28°C (82°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%81%79%75%82%85%85%83%
Barometric pressure1019 hPa1017 hPa1018 hPa1019 hPa1018 hPa1015 hPa1015 hPa1016 hPa
Cloud cover38%41%70%9%35%77%85%3%
Heat index27°C (80°F)27°C (80°F)27°C (81°F)27°C (81°F)27°C (80°F)27°C (81°F)28°C (82°F)28°C (82°F)
Dew point21°C (70°F)21°C (70°F)21°C (70°F)21°C (69°F)21°C (70°F)22°C (72°F)22°C (72°F)22°C (72°F)
Wind
Speed21km/h (13mph)20km/h (12mph)16km/h (10mph)12km/h (7mph)17km/h (10mph)18km/h (11mph)17km/h (11mph)15km/h (9mph)
Gusts29km/h (18mph)28km/h (17mph)23km/h (15mph)17km/h (11mph)26km/h (16mph)27km/h (17mph)26km/h (16mph)22km/h (14mph)
Direction 86°
E
97°
E
108°
ESE
96°
E
97°
E
109°
ESE
128°
SE
122°
ESE
Wind chill25°C (76°F)25°C (76°F)25°C (77°F)26°C (78°F)25°C (76°F)25°C (77°F)25°C (77°F)25°C (78°F)
Waves
Height0.4m (1.5ft)0.4m (1.3ft)0.3m (1.1ft)0.2m (0.8ft)0.2m (0.8ft)0.3m (0.9ft)0.3m (1.0ft)0.3m (1.1ft)
Direction 73°
ENE
92°
E
101°
ESE
290°
WNW
294°
WNW
101°
ESE
113°
ESE
126°
SE
Period5.5 sec.5.2 sec.5.1 sec.4.8 sec.4.6 sec.4.5 sec.4.3 sec.4.2 sec.
Significant height0.7m (2.3ft)0.6m (2ft)0.5m (1.6ft)0.3m (1ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.6m (2ft)
Sea water temperature
Water temperature23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)

Sea weather on Saturday 6 December 2025

On Saturday 6 December 2025, the sun will rise at 06:58 and will set at 17:39 on the beach(es) of Key West. The outside temperature will be a high of 77°F t and a low of 77°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 10.6mph km/h (with gusts up to 14.9mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)
Perceived temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)28°C (82°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity84%84%83%83%83%83%85%87%
Barometric pressure1016 hPa1015 hPa1015 hPa1017 hPa1016 hPa1013 hPa1014 hPa1015 hPa
Cloud cover13%83%36%28%46%71%19%87%
Heat index27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)28°C (82°F)27°C (81°F)
Dew point22°C (72°F)22°C (72°F)22°C (71°F)22°C (72°F)22°C (71°F)22°C (72°F)22°C (72°F)23°C (73°F)
Wind
Speed16km/h (10mph)13km/h (8mph)15km/h (9mph)17km/h (10mph)15km/h (9mph)12km/h (8mph)10km/h (6mph)12km/h (7mph)
Gusts23km/h (14mph)19km/h (12mph)21km/h (13mph)24km/h (15mph)24km/h (15mph)19km/h (12mph)16km/h (10mph)19km/h (12mph)
Direction 120°
ESE
113°
ESE
113°
ESE
121°
ESE
136°
SE
142°
SE
134°
SE
118°
ESE
Wind chill25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)
Waves
Height0.2m (0.8ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1.0ft)0.2m (0.8ft)0.2m (0.6ft)0.1m (0.5ft)0.1m (0.5ft)
Direction 130°
SE
165°
SSE
164°
SSE
140°
SE
151°
SSE
162°
SSE
162°
SSE
170°
S
Period2.8 sec.2.8 sec.3.7 sec.3.7 sec.3.7 sec.3.7 sec.3.4 sec.3.3 sec.
Significant height0.4m (1.3ft)0.6m (2ft)0.4m (1.3ft)0.8m (2.6ft)0.6m (2ft)0.5m (1.6ft)0.3m (1ft)0.3m (1ft)
Sea water temperature
Water temperature23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)

Sea weather on Sunday 7 December 2025

On Sunday 7 December 2025, the sun will rise at 06:59 and will set at 17:39 on the beach(es) of Key West. The outside temperature will be a high of 79°F t and a low of 70°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 10.6mph km/h (with gusts up to 16.2mph). Wave height will be up to 0.7ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (78°F)26°C (78°F)25°C (77°F)25°C (78°F)22°C (71°F)25°C (77°F)25°C (76°F)25°C (76°F)
Perceived temperature28°C (82°F)28°C (83°F)28°C (82°F)28°C (82°F)22°C (71°F)28°C (82°F)27°C (80°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity85%84%84%84%84%84%86%86%
Barometric pressure1014 hPa1014 hPa1014 hPa1016 hPa1015 hPa1013 hPa1014 hPa1015 hPa
Cloud cover16%8%76%22%5%18%4%78%
Heat index28°C (82°F)28°C (83°F)28°C (82°F)28°C (82°F)24°C (76°F)28°C (82°F)27°C (80°F)27°C (81°F)
Dew point23°C (73°F)23°C (73°F)22°C (72°F)22°C (72°F)19°C (66°F)22°C (72°F)22°C (72°F)22°C (72°F)
Wind
Speed11km/h (7mph)15km/h (9mph)10km/h (6mph)8km/h (5mph)13km/h (8mph)17km/h (10mph)11km/h (7mph)10km/h (6mph)
Gusts17km/h (11mph)23km/h (14mph)17km/h (10mph)13km/h (8mph)26km/h (16mph)26km/h (16mph)19km/h (12mph)17km/h (11mph)
Direction 124°
ESE
157°
SSE
150°
SSE
169°
S
206°
SSW
214°
SW
251°
WSW
281°
W
Wind chill25°C (78°F)26°C (78°F)25°C (77°F)25°C (78°F)22°C (71°F)25°C (77°F)25°C (76°F)25°C (76°F)
Waves
Height0.1m (0.5ft)0.1m (0.4ft)0.1m (0.4ft)0.1m (0.5ft)0.2m (0.6ft)0.2m (0.8ft)0.2m (0.8ft)0.2m (0.7ft)
Direction 170°
S
171°
S
168°
SSE
175°
S
192°
SSW
199°
SSW
202°
SSW
201°
SSW
Period3.2 sec.3.1 sec.3.1 sec.3.1 sec.3.1 sec.5.0 sec.4.9 sec.2.8 sec.
Significant height0.4m (1.3ft)0.2m (0.7ft)0.6m (2ft)0.6m (2ft)0.6m (2ft)0.4m (1.3ft)0.3m (1ft)0.4m (1.3ft)
Sea water temperature
Water temperature23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)

Sea weather on Monday 8 December 2025

On Monday 8 December 2025, the sun will rise at 06:59 and will set at 17:39 on the beach(es) of Key West. The outside temperature will be a high of 77°F t and a low of 74°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 14.3mph km/h (with gusts up to 19.9mph). Wave height will be up to 2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (78°F)25°C (77°F)25°C (77°F)25°C (76°F)24°C (75°F)24°C (74°F)23°C (73°F)23°C (74°F)
Perceived temperature28°C (82°F)28°C (82°F)27°C (81°F)27°C (80°F)26°C (79°F)26°C (78°F)25°C (77°F)25°C (78°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%83%83%83%80%80%85%82%
Barometric pressure1014 hPa1014 hPa1014 hPa1016 hPa1016 hPa1014 hPa1015 hPa1016 hPa
Cloud cover89%86%85%21%26%28%76%32%
Heat index28°C (82°F)28°C (82°F)27°C (81°F)27°C (80°F)26°C (79°F)26°C (78°F)25°C (77°F)25°C (78°F)
Dew point22°C (72°F)22°C (72°F)22°C (72°F)21°C (71°F)20°C (69°F)20°C (68°F)20°C (69°F)20°C (68°F)
Wind
Speed11km/h (7mph)15km/h (9mph)15km/h (9mph)14km/h (9mph)9km/h (5mph)12km/h (8mph)19km/h (12mph)23km/h (14mph)
Gusts17km/h (11mph)23km/h (15mph)23km/h (14mph)21km/h (13mph)13km/h (8mph)19km/h (11mph)27km/h (17mph)32km/h (20mph)
Direction 254°
WSW
273°
W
291°
WNW
331°
NNW
349°
N
345°
NNW

N
14°
NNE
Wind chill25°C (78°F)25°C (77°F)25°C (77°F)25°C (76°F)24°C (75°F)24°C (74°F)23°C (73°F)23°C (74°F)
Waves
Height0.2m (0.6ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.8ft)0.2m (0.8ft)0.3m (0.9ft)0.3m (1.1ft)0.6m (1.9ft)
Direction 300°
WNW
297°
WNW
294°
WNW
284°
WNW
284°
WNW
282°
WNW
279°
W
252°
WSW
Period2.8 sec.4.5 sec.4.4 sec.3.2 sec.4.2 sec.3.8 sec.3.9 sec.4.1 sec.
Significant height0.3m (1ft)0.4m (1.3ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.6m (2ft)0.8m (2.6ft)
Sea water temperature
Water temperature23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)

Sea weather on Tuesday 9 December 2025

On Tuesday 9 December 2025, the sun will rise at 07:00 and will set at 17:40 on the beach(es) of Key West. The outside temperature will be a high of 76°F t and a low of 74°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 16.2mph km/h (with gusts up to 21.8mph). Wave height will be up to 3.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (73°F)23°C (73°F)23°C (74°F)24°C (74°F)
Perceived temperature25°C (78°F)25°C (77°F)25°C (77°F)25°C (78°F)25°C (77°F)25°C (77°F)25°C (77°F)26°C (78°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%83%83%84%85%84%83%82%
Barometric pressure1016 hPa1015 hPa1015 hPa1017 hPa1016 hPa1014 hPa1015 hPa1015 hPa
Cloud cover68%95%94%70%46%70%65%36%
Heat index25°C (78°F)25°C (77°F)25°C (77°F)25°C (78°F)25°C (77°F)25°C (77°F)25°C (77°F)26°C (78°F)
Dew point20°C (68°F)20°C (68°F)20°C (68°F)20°C (69°F)20°C (68°F)20°C (68°F)20°C (68°F)20°C (68°F)
Wind
Speed26km/h (16mph)26km/h (16mph)24km/h (15mph)21km/h (13mph)19km/h (12mph)19km/h (12mph)17km/h (10mph)14km/h (9mph)
Gusts35km/h (22mph)34km/h (21mph)32km/h (20mph)28km/h (18mph)28km/h (17mph)27km/h (17mph)24km/h (15mph)21km/h (13mph)
Direction 48°
NE
59°
ENE
52°
NE
46°
NE
38°
NE
37°
NE
45°
NE
41°
NE
Wind chill23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (73°F)23°C (73°F)23°C (74°F)24°C (74°F)
Waves
Height0.6m (1.9ft)0.6m (2.0ft)0.7m (2.2ft)0.8m (2.6ft)1.0m (3.3ft)1.1m (3.6ft)1.1m (3.6ft)1.2m (3.9ft)
Direction 269°
W
280°
W
291°
WNW
292°
WNW
284°
WNW
284°
WNW
275°
W
279°
W
Period4.6 sec.4.7 sec.4.9 sec.5.7 sec.6.4 sec.7.2 sec.7.5 sec.7.5 sec.
Significant height0.9m (3ft)0.8m (2.6ft)1.0m (3.3ft)1.3m (4.3ft)1.3m (4.3ft)1.2m (3.9ft)1.3m (4.3ft)1.3m (4.3ft)
Sea water temperature
Water temperature23°C (73°F)23°C (73°F)23°C (73°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)

Sea weather on Wednesday 10 December 2025

On Wednesday 10 December 2025, the sun will rise at 07:01 and will set at 17:40 on the beach(es) of Key West. The outside temperature will be a high of 77°F t and a low of 76°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 9.9mph km/h (with gusts up to 15.5mph). Wave height will be up to 3.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature24°C (75°F)24°C (75°F)24°C (75°F)24°C (76°F)25°C (76°F)25°C (77°F)25°C (77°F)25°C (77°F)
Perceived temperature26°C (78°F)26°C (78°F)26°C (79°F)26°C (80°F)27°C (80°F)27°C (81°F)27°C (81°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity81%80%80%81%81%80%80%82%
Barometric pressure1015 hPa1014 hPa1014 hPa1015 hPa1014 hPa1012 hPa1012 hPa1013 hPa
Cloud cover27%24%26%26%37%55%63%46%
Heat index26°C (78°F)26°C (78°F)26°C (79°F)26°C (80°F)27°C (80°F)27°C (81°F)27°C (81°F)27°C (81°F)
Dew point20°C (69°F)20°C (69°F)20°C (69°F)21°C (70°F)21°C (70°F)21°C (70°F)21°C (71°F)22°C (71°F)
Wind
Speed11km/h (7mph)8km/h (5mph)6km/h (4mph)9km/h (6mph)14km/h (9mph)16km/h (10mph)14km/h (9mph)15km/h (10mph)
Gusts16km/h (10mph)10km/h (6mph)8km/h (5mph)13km/h (8mph)21km/h (13mph)24km/h (15mph)21km/h (13mph)25km/h (16mph)
Direction 55°
NE
94°
E
105°
ESE
128°
SE
160°
SSE
186°
S
172°
S
184°
S
Wind chill24°C (75°F)24°C (75°F)24°C (75°F)24°C (76°F)25°C (76°F)25°C (77°F)25°C (77°F)25°C (77°F)
Waves
Height1.2m (3.9ft)1.0m (3.3ft)0.9m (3.0ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2.0ft)0.6m (2.0ft)
Direction 284°
WNW
283°
WNW
283°
WNW
281°
W
289°
WNW
292°
WNW
289°
WNW
298°
WNW
Period7.0 sec.6.8 sec.6.9 sec.6.4 sec.6.1 sec.6.4 sec.6.4 sec.6.0 sec.
Significant height0.8m (2.6ft)1.2m (3.9ft)1.1m (3.6ft)1.0m (3.3ft)0.9m (3ft)0.8m (2.6ft)0.7m (2.3ft)0.8m (2.6ft)
Sea water temperature
Water temperature25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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