Key West weather in January 2027

Q: How hot is it in Key West in January?

Daytime temperatures usually reach 24°C in Key West in January, falling to 16°C at night.

Q: How sunny is it in Key West in January?

There are normally 7 hours of bright sunshine each day in Key West in January - that's 66% of daylight hours.

Q: How warm is the sea around Key West in January?

The average sea temperature around Key West in January is 24°C.

Q: Does it rain in Key West in January?

There are usually 7 days with some rain in Key West in January and the average monthly rainfall is 61mm.

Expect daytime maximum temperatures of 75°F in Key West, Florida in January based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 1.9 inches of rainfall in the month.

75
75°F max day temperature
8
8 hours of sunshine per day
6
6 days with some rainfall
63
63°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
1.9
1.9 inches of monthly rainfall
6
6 (High) UV index
73
73°F sea temperature

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The January weather guide for Florida (Key West) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C) | Imperial (°F)