Sea Temperature in Key West in May

Complete information on the sea temperature range in the Gulf of Mexico (Gulf of America) in Key West in May. Historical daily data. Climate details for May. Tips on swimming conditions and beach relaxation in Key West. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Key West in May

75°F

MINIMUN

82°F

AVERAGE

90°F

MAXIMUM

Historical Data of Water Temperature in May in Key West

Water Temperature Chart for Gulf of Mexico (Gulf of America) in Key West in May

Sea Temperature Table in Key West in May Over the Past Years

Day	2024	2023	2022	Average
May 1	81°C	81°C	77°C	79°C
May 2	82°C	81°C	77°C	79°C
May 3	81°C	79°C	77°C	79°C
May 4	81°C	79°C	77°C	79°C
May 5	81°C	81°C	79°C	80°C
May 6	82°C	81°C	79°C	81°C
May 7	82°C	81°C	79°C	80°C
May 8	82°C	81°C	79°C	80°C
May 9	82°C	79°C	79°C	80°C
May 10	82°C	79°C	81°C	81°C
May 11	82°C	79°C	81°C	81°C
May 12	82°C	81°C	81°C	82°C
May 13	82°C	82°C	81°C	82°C
May 14	82°C	81°C	81°C	82°C
May 15	82°C	81°C	82°C	82°C
May 16	82°C	82°C	82°C	82°C
May 17	81°C	81°C	82°C	82°C
May 18	81°C	81°C	82°C	82°C
May 19	82°C	81°C	82°C	82°C
May 20	81°C	81°C	84°C	82°C
May 21	81°C	81°C	84°C	82°C
May 22	79°C	82°C	84°C	82°C
May 23	81°C	82°C	84°C	83°C
May 24	81°C	81°C	84°C	83°C
May 25	77°C	81°C	86°C	82°C
May 26	79°C	81°C	86°C	83°C
May 27	81°C	81°C	86°C	83°C
May 28	79°C	82°C	86°C	83°C
May 29	81°C	82°C	86°C	84°C
May 30	79°C	84°C	88°C	84°C

Key West Climate and Swimming Opportunities in May

86°F

Average Day Air Temperature

72°F

Average Night Air Temperature

5 in

Precipitation Amount per Month

10 days

Number of Rainy Days

13 hrs

Daylight
per Day

10 hrs

Sunshine
per Day

10 mph

Average Wind Speed

73%

Average
humidity

Key West lies within the Florida in United States. The average daytime temperature in Key West in May is 86°F (30°C), while the nighttime average is 72°F (22°C). There are typically 10 rainy days during the month, with a total precipitation of 4.6 inches (116 mm). The daylight duration in May in Key West is 13 hours, with an average of 10 hours of sunshine per day. The average wind speed in May is 11 mph (17 km/h), and the humidity level is around 73%.

The water temperature in Key West in May ranges from 77°F to 84°F (25°C to 29°C). At the beginning of the month, the average temperature is around 79°F (26°C), shifting to 81°F (27°C) by mid-May and reaching 82°F (28°C) in the last ten days. Overall, the average sea temperature in Key West for May is 81°F (27°C). The water is almost like a bath, perfect for those who prefer very warm conditions. However, it may not be as refreshing on extremely hot days.

Sea Temperature in May in Nearby Cities

Frequently Asked Questions About Water Temperatures in May in Key West

What is the sea temperature in Key West in May?

The water temperature in the Gulf of Mexico (Gulf of America) in Key West in May ranges from 77°F to 84°F (25°C to 29°C).

Is it possible to swim in the Gulf of Mexico (Gulf of America) in Key West in May?

The average sea temperature in Key West in May is 81°F (27°C), and the air temperature is 86°F (30°C), so the water is almost like a bath, perfect for those who prefer very warm conditions. However, it may not be as refreshing on extremely hot days.