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
Saturday 16 October 202177°F to 83°Frecommended
Sunday 17 October 202174°F to 83°Fdiscouraged
Monday 18 October 202179°F to 81°Fdiscouraged
Tuesday 19 October 202179°F to 81°Fdiscouraged
Wednesday 20 October 202181°F to 83°Fdiscouraged
Thursday 21 October 202181°F to 81°Fnot recommended
Friday 22 October 202181°F to 83°Fdiscouraged

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

Sea weather on Saturday 16 October 2021

On Saturday 16 October 2021, the sun will rise at 07:26 and will set at 18:59 on the beach(es) of Key West. The outside temperature will be a high of 83°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 5mph km/h (with gusts up to 14.3mph). Wave height will be up to 0.7ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)27°C (81°F)27°C (81°F)27°C (80°F)25°C (77°F)27°C (80°F)28°C (82°F)28°C (82°F)
Perceived temperature30°C (86°F)29°C (85°F)30°C (85°F)29°C (83°F)27°C (80°F)28°C (83°F)30°C (87°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity71%72%69%68%67%66%67%69%
Barometric pressure1012 hPa1012 hPa1014 hPa1015 hPa1013 hPa1013 hPa1014 hPa1014 hPa
Cloud cover89%70%85%78%82%3%3%5%
Heat index30°C (86°F)29°C (85°F)30°C (85°F)29°C (83°F)27°C (80°F)28°C (83°F)30°C (87°F)30°C (86°F)
Dew point22°C (71°F)21°C (71°F)21°C (70°F)20°C (68°F)19°C (65°F)20°C (67°F)21°C (70°F)21°C (71°F)
Wind
Speed8km/h (5mph)8km/h (5mph)5km/h (3mph)5km/h (3mph)5km/h (3mph)1km/h (1mph)7km/h (4mph)6km/h (4mph)
Gusts19km/h (12mph)19km/h (12mph)23km/h (15mph)6km/h (4mph)14km/h (9mph)5km/h (3mph)9km/h (6mph)17km/h (11mph)
Direction 67°
ENE
63°
ENE
85°
E
34°
NE
54°
NE
40°
NE
272°
W
350°
N
Wind chill28°C (82°F)27°C (81°F)27°C (81°F)27°C (80°F)25°C (77°F)27°C (80°F)28°C (82°F)28°C (82°F)
Waves
Height0.2m (0.7ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.2m (0.7ft)
Direction 60°
ENE
60°
ENE
60°
ENE
60°
ENE
60°
ENE
300°
WNW
300°
WNW
300°
WNW
Period3.1 sec.3.1 sec.3.1 sec.3.1 sec.2.9 sec.3.2 sec.3.3 sec.3.3 sec.
Significant height0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.1m (0.3ft)0.1m (0.3ft)0.1m (0.3ft)0.2m (0.7ft)0.2m (0.7ft)
Sea water temperature
Water temperature29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)

Sea weather on Sunday 17 October 2021

On Sunday 17 October 2021, the sun will rise at 07:26 and will set at 18:58 on the beach(es) of Key West. The outside temperature will be a high of 83°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 29.8mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)28°C (82°F)28°C (82°F)23°C (74°F)25°C (76°F)27°C (81°F)28°C (82°F)27°C (81°F)
Perceived temperature30°C (86°F)30°C (86°F)30°C (87°F)25°C (77°F)26°C (79°F)29°C (85°F)30°C (87°F)30°C (86°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity68%68%70%70%69%69%69%72%
Barometric pressure1014 hPa1013 hPa1015 hPa1015 hPa1014 hPa1013 hPa1015 hPa1015 hPa
Cloud cover89%73%80%74%12%17%20%43%
Heat index30°C (86°F)30°C (86°F)30°C (87°F)25°C (77°F)26°C (79°F)29°C (85°F)30°C (87°F)30°C (86°F)
Dew point21°C (70°F)21°C (70°F)22°C (71°F)17°C (63°F)19°C (65°F)21°C (70°F)22°C (71°F)22°C (71°F)
Wind
Speed9km/h (6mph)10km/h (6mph)11km/h (7mph)13km/h (8mph)21km/h (13mph)26km/h (16mph)24km/h (15mph)17km/h (10mph)
Gusts15km/h (9mph)21km/h (13mph)29km/h (18mph)36km/h (23mph)34km/h (21mph)48km/h (30mph)24km/h (15mph)28km/h (18mph)
Direction 78°
ENE
37°
NE
31°
NNE
354°
N
13°
NNE
22°
NNE
37°
NE
24°
NNE
Wind chill28°C (82°F)28°C (82°F)28°C (82°F)23°C (74°F)25°C (76°F)27°C (81°F)28°C (82°F)27°C (81°F)
Waves
Height0.2m (0.7ft)0.2m (0.7ft)0.1m (0.3ft)0.1m (0.3ft)0.3m (1.0ft)0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)
Direction 300°
WNW
280°
W
280°
W
50°
NE
50°
NE
300°
WNW
300°
WNW
300°
WNW
Period3.4 sec.3.5 sec.3.5 sec.2.9 sec.2.9 sec.2.9 sec.2.9 sec.2.9 sec.
Significant height0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.3m (1ft)0.5m (1.6ft)0.7m (2.3ft)0.6m (2ft)0.4m (1.3ft)
Sea water temperature
Water temperature29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)

Sea weather on Monday 18 October 2021

On Monday 18 October 2021, the sun will rise at 07:27 and will set at 18:57 on the beach(es) of Key West. The outside temperature will be a high of 81°F t and a low of 79°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 24.9mph km/h (with gusts up to 30.5mph). Wave height will be up to 3.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)26°C (79°F)26°C (79°F)26°C (79°F)27°C (80°F)27°C (81°F)27°C (81°F)27°C (80°F)
Perceived temperature30°C (85°F)29°C (84°F)29°C (84°F)28°C (83°F)29°C (84°F)29°C (85°F)29°C (84°F)29°C (84°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity75%80%78%73%70%71%69%69%
Barometric pressure1014 hPa1014 hPa1016 hPa1016 hPa1015 hPa1014 hPa1016 hPa1016 hPa
Cloud cover70%77%80%89%86%40%20%26%
Heat index30°C (85°F)29°C (84°F)29°C (84°F)28°C (83°F)29°C (84°F)29°C (85°F)29°C (84°F)29°C (84°F)
Dew point22°C (72°F)22°C (72°F)22°C (72°F)21°C (70°F)21°C (70°F)21°C (70°F)21°C (70°F)21°C (69°F)
Wind
Speed6km/h (4mph)15km/h (9mph)21km/h (13mph)33km/h (21mph)40km/h (25mph)39km/h (24mph)33km/h (21mph)34km/h (21mph)
Gusts34km/h (21mph)38km/h (24mph)46km/h (29mph)49km/h (31mph)43km/h (27mph)41km/h (26mph)44km/h (27mph)40km/h (25mph)
Direction 352°
N

N
47°
NE
64°
ENE
60°
ENE
57°
ENE
62°
ENE
69°
ENE
Wind chill27°C (81°F)26°C (79°F)26°C (79°F)26°C (79°F)27°C (80°F)27°C (81°F)27°C (81°F)27°C (80°F)
Waves
Height0.3m (1.0ft)0.3m (1.0ft)0.7m (2.3ft)1.0m (3.3ft)1.2m (3.9ft)1.2m (3.9ft)1.1m (3.6ft)1.1m (3.6ft)
Direction 330°
NNW
260°
W
250°
WSW
270°
W
270°
W
270°
W
270°
W
270°
W
Period3.4 sec.7.4 sec.7.4 sec.6.8 sec.6.7 sec.6.7 sec.6.6 sec.6.4 sec.
Significant height0.1m (0.3ft)0.4m (1.3ft)0.9m (3ft)1.3m (4.3ft)1.4m (4.6ft)1.3m (4.3ft)1.1m (3.6ft)1.0m (3.3ft)
Sea water temperature
Water temperature29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)

Sea weather on Tuesday 19 October 2021

On Tuesday 19 October 2021, the sun will rise at 07:27 and will set at 18:57 on the beach(es) of Key West. The outside temperature will be a high of 81°F t and a low of 79°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 23.6mph km/h (with gusts up to 29.2mph). Wave height will be up to 3.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (80°F)27°C (80°F)27°C (80°F)26°C (79°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)
Perceived temperature29°C (84°F)29°C (84°F)29°C (84°F)28°C (83°F)30°C (85°F)30°C (87°F)31°C (87°F)31°C (87°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity72%75%74%73%73%75%76%76%
Barometric pressure1016 hPa1016 hPa1017 hPa1018 hPa1016 hPa1015 hPa1018 hPa1018 hPa
Cloud cover85%64%39%44%54%62%88%42%
Heat index29°C (84°F)29°C (84°F)29°C (84°F)28°C (83°F)30°C (85°F)30°C (87°F)31°C (87°F)31°C (87°F)
Dew point21°C (71°F)22°C (71°F)21°C (71°F)21°C (70°F)22°C (71°F)23°C (73°F)23°C (73°F)23°C (73°F)
Wind
Speed35km/h (22mph)38km/h (24mph)33km/h (21mph)29km/h (18mph)30km/h (19mph)35km/h (22mph)27km/h (17mph)17km/h (11mph)
Gusts36km/h (23mph)41km/h (25mph)42km/h (26mph)47km/h (29mph)44km/h (27mph)45km/h (28mph)47km/h (29mph)46km/h (29mph)
Direction 72°
ENE
62°
ENE
69°
ENE
58°
ENE
45°
NE
44°
NE
65°
ENE
113°
ESE
Wind chill27°C (80°F)27°C (80°F)27°C (80°F)26°C (79°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)
Waves
Height1.1m (3.6ft)1.2m (3.9ft)1.1m (3.6ft)0.9m (3.0ft)0.8m (2.6ft)0.9m (3.0ft)0.9m (3.0ft)0.6m (2.0ft)
Direction 280°
W
280°
W
280°
W
280°
W
280°
W
270°
W
270°
W
340°
NNW
Period6.1 sec.6.0 sec.5.7 sec.5.5 sec.5.2 sec.5.4 sec.5.4 sec.3.9 sec.
Significant height1.1m (3.6ft)1.1m (3.6ft)0.9m (3ft)0.8m (2.6ft)0.8m (2.6ft)1.0m (3.3ft)0.7m (2.3ft)0.6m (2ft)
Sea water temperature
Water temperature29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)

Sea weather on Wednesday 20 October 2021

On Wednesday 20 October 2021, the sun will rise at 07:28 and will set at 18:56 on the beach(es) of Key West. The outside temperature will be a high of 83°F t and a low of 81°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 21.1mph km/h (with gusts up to 27.3mph). Wave height will be up to 3.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)27°C (81°F)27°C (81°F)28°C (82°F)27°C (81°F)28°C (82°F)28°C (82°F)27°C (81°F)
Perceived temperature31°C (88°F)31°C (87°F)31°C (87°F)31°C (88°F)30°C (87°F)31°C (87°F)31°C (88°F)31°C (87°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%78%78%78%77%76%76%77%
Barometric pressure1017 hPa1017 hPa1018 hPa1019 hPa1018 hPa1017 hPa1018 hPa1019 hPa
Cloud cover75%70%76%64%68%51%69%64%
Heat index31°C (88°F)31°C (87°F)31°C (87°F)31°C (88°F)30°C (87°F)31°C (87°F)31°C (88°F)31°C (87°F)
Dew point23°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)23°C (73°F)
Wind
Speed30km/h (19mph)32km/h (20mph)28km/h (18mph)28km/h (17mph)27km/h (17mph)31km/h (19mph)30km/h (19mph)34km/h (21mph)
Gusts41km/h (26mph)40km/h (25mph)39km/h (24mph)39km/h (24mph)41km/h (25mph)39km/h (24mph)42km/h (26mph)44km/h (27mph)
Direction 65°
ENE
96°
E
80°
E
79°
E
90°
E
99°
E
92°
E
92°
E
Wind chill28°C (82°F)27°C (81°F)27°C (81°F)28°C (82°F)27°C (81°F)28°C (82°F)28°C (82°F)27°C (81°F)
Waves
Height0.6m (2.0ft)0.7m (2.3ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.8m (2.6ft)1.0m (3.3ft)
Direction 270°
W
260°
W
260°
W
300°
WNW
350°
N
350°
N
350°
N
350°
N
Period5.1 sec.5.1 sec.5.1 sec.5.1 sec.4.4 sec.4.4 sec.4.6 sec.4.6 sec.
Significant height0.8m (2.6ft)0.9m (3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.8m (2.6ft)0.8m (2.6ft)0.9m (3ft)
Sea water temperature
Water temperature29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)

Sea weather on Thursday 21 October 2021

On Thursday 21 October 2021, the sun will rise at 07:28 and will set at 18:55 on the beach(es) of Key West. The outside temperature will be a high of 81°F t and a low of 81°F. Precipitation is in the forecast (0.2in throughout the day): choose the right time to go to the beach and dodge the raindrops. Be careful, the sea will be generally rough with a wind speed of up to 25.5mph km/h (with gusts up to 34.8mph). Wave height will be up to 4.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (80°F)27°C (81°F)27°C (81°F)27°C (81°F)
Perceived temperature31°C (87°F)30°C (87°F)30°C (87°F)30°C (86°F)30°C (85°F)30°C (87°F)31°C (87°F)31°C (87°F)
Precipitation0in0in0in0.1in0in0in0in0in
Humidity77%78%78%78%78%78%78%77%
Barometric pressure1017 hPa1016 hPa1018 hPa1019 hPa1017 hPa1016 hPa1017 hPa1017 hPa
Cloud cover77%72%73%90%81%69%81%84%
Heat index31°C (87°F)30°C (87°F)30°C (87°F)30°C (86°F)30°C (85°F)30°C (87°F)31°C (87°F)31°C (87°F)
Dew point23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (74°F)23°C (74°F)23°C (74°F)
Wind
Speed41km/h (26mph)41km/h (26mph)37km/h (23mph)32km/h (20mph)31km/h (19mph)30km/h (19mph)26km/h (16mph)31km/h (19mph)
Gusts43km/h (27mph)56km/h (35mph)41km/h (26mph)44km/h (27mph)46km/h (28mph)43km/h (27mph)43km/h (27mph)43km/h (27mph)
Direction 87°
E
80°
E
82°
E
89°
E
95°
E
100°
E
99°
E
99°
E
Wind chill27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (80°F)27°C (81°F)27°C (81°F)27°C (81°F)
Waves
Height1.3m (4.3ft)1.4m (4.6ft)1.3m (4.3ft)1.1m (3.6ft)0.9m (3.0ft)0.9m (3.0ft)0.9m (3.0ft)0.9m (3.0ft)
Direction 300°
WNW
300°
WNW
300°
WNW
300°
WNW
300°
WNW
350°
N
350°
N
350°
N
Period4.6 sec.4.6 sec.4.6 sec.4.6 sec.4.6 sec.4.6 sec.4.5 sec.4.5 sec.
Significant height1.2m (3.9ft)1.2m (3.9ft)1.0m (3.3ft)0.9m (3ft)0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)0.8m (2.6ft)
Sea water temperature
Water temperature29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)

Sea weather on Friday 22 October 2021

On Friday 22 October 2021, the sun will rise at 07:29 and will set at 18:54 on the beach(es) of Key West. The outside temperature will be a high of 83°F t and a low of 81°F. Precipitation is in the forecast (0.1in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 22.4mph km/h (with gusts up to 33.6mph). Wave height will be up to 3.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)28°C (82°F)27°C (81°F)28°C (82°F)27°C (81°F)27°C (81°F)28°C (82°F)28°C (82°F)
Perceived temperature31°C (88°F)31°C (87°F)31°C (87°F)31°C (88°F)30°C (87°F)31°C (87°F)31°C (88°F)31°C (88°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%77%77%75%76%76%78%77%
Barometric pressure1016 hPa1015 hPa1016 hPa1016 hPa1015 hPa1014 hPa1014 hPa1015 hPa
Cloud cover71%71%57%63%54%55%53%60%
Heat index31°C (88°F)31°C (87°F)31°C (87°F)31°C (88°F)30°C (87°F)31°C (87°F)31°C (88°F)31°C (88°F)
Dew point23°C (74°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (73°F)23°C (74°F)23°C (74°F)
Wind
Speed33km/h (21mph)33km/h (21mph)36km/h (22mph)33km/h (21mph)30km/h (19mph)28km/h (18mph)26km/h (16mph)25km/h (16mph)
Gusts39km/h (24mph)34km/h (21mph)54km/h (34mph)48km/h (30mph)41km/h (25mph)43km/h (27mph)32km/h (20mph)32km/h (20mph)
Direction 102°
ESE
108°
ESE
109°
ESE
113°
ESE
110°
ESE
107°
ESE
100°
E
98°
E
Wind chill28°C (82°F)28°C (82°F)27°C (81°F)28°C (82°F)27°C (81°F)27°C (81°F)28°C (82°F)28°C (82°F)
Waves
Height1.0m (3.3ft)1.1m (3.6ft)1.2m (3.9ft)1.2m (3.9ft)1.1m (3.6ft)1.0m (3.3ft)0.9m (3.0ft)0.8m (2.6ft)
Direction 300°
WNW
300°
WNW
300°
WNW
300°
WNW
300°
WNW
300°
WNW
300°
WNW
300°
WNW
Period4.5 sec.4.5 sec.4.5 sec.4.5 sec.4.5 sec.4.5 sec.4.5 sec.4.5 sec.
Significant height0.9m (3ft)0.9m (3ft)1.0m (3.3ft)0.9m (3ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2ft)
Sea water temperature
Water temperature29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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