Florida Keys Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Florida Keys.
Climate overview of Florida Keys
In this area you will find a subtropical climate with temperatures that in winter hardly drop below 13°C (55°F) at night and during the day it is pleasantly warm with between 22°C (72°F) and 26°C (79°F) on average. The number of rainy days can be counted on one hand in winter,. In terms of sunshine, the Keys are a very pleasant destination. In the period from January to April, on average 40% of the days have a clear blue sky and no clouds. The month April is the sunniest. The gloomiest are the months October, November and December.
Florida Keys Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Florida Keys - and find the best time to visit.
Monthly Temperature in Florida Keys
In Florida Keys, seasonal changes bring about a moderate variation in temperatures. Typically, average maximum daytime temperatures range from a very warm 32°C (90°F) in August to a comfortable 24°C (75°F) in the coolest month, January.
Nights vary from 27°C (81°F) in August to around 17°C (63°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Florida Keys
Florida Keys is known for its substantial rainfall, with annual precipitation reaching 1102 mm (43 in). The climate in Florida Keys shows significant variation throughout the year. Expect heavy rainfall in September, the wettest month, with an average of 191 mm (7.5 in) of precipitation over 22 rainy days.
In contrast, the driest month March offers drier and sunnier days, with around 37 mm (1.5 in) of rainfall over 8 rainy days. For more details, please visit our Florida Keys Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Florida Keys
Florida Keys offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between May (11.4 hours daily) and November (7.7 hours daily) provides a bit of variety for visitors and residents.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Florida Keys by Month
The relative humidity is high throughout the year in Florida Keys.
The city experiences its highest humidity in January, reaching 77%. In April, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Florida Keys
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January, February, March, April, May, November and December
- Warmest weather: June, July, August and September
- Most sunshine: April, May and July
- Fewer rainy days: January, February, March, April and November
- Wettest months: June, July, August, September and October, when rainfall is highest.
Frequently asked questions about the climate in Florida Keys
What is the best time to visit Florida Keys?
January, February, March, April, May, November and December typically offer the most optimal weather in Florida Keys. In contrast, September tends to have less optimal conditions.
What temperatures can I expect in Florida Keys?
Daytime highs range from 24°C (75°F) in January to 32°C (90°F) in August. Nighttime lows range from 17°C (63°F) to 27°C (81°F).
How much rain does Florida Keys get?
Annual rainfall is around 1102 mm (43 in). September is the wettest month with 191 mm (7.5 in), while March is the driest with 37 mm (1.5 in).
How sunny is Florida Keys?
Florida Keys receives around 3,412 hours of sunshine per year. May is the sunniest month with 341 hours, while November is the cloudiest with just 231 hours. Overall, Florida Keys enjoys abundant sunshine.
Florida Keys 3-Day Forecast
Florida Keys 3-Day Forecast
Florida Keys on the map
Florida Keys is highlighted - select any city to see its climate.
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