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Key West in January: weather, sea & travel advice
This month's data profile
Strong month under the current formula
Key West in January is climatically well suited to city breaks, family holidays, beach holidays and active holidays and hiking. The average daily high is around 23 °C, and the sea is about 23 °C. With about 7 rainy days it is moderate.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
85/100 · #5
Warmth
#12
Dryness
#3
Sun
#11
Sea warmth
#11
Published best categories: City break, Active
Key West · JanuaryPhoto: Ebyabe · CC BY-SA 3.0Climate facts
- Average high
- 23 °C
- Average low
- 21 °C
- Sea
- 23 °C
- Rainy days (est.)
- 7 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 79 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| December | 24 | 23 | 8 | 54 | 4.5 | 79 | 5.3 | 24 | 86 |
| January (selected) | 23 | 21 | 7 | 47 | 4.8 | 79 | 5.3 | 23 | 85 |
| February | 23 | 22 | 6 | 40 | 6.0 | 79 | 4.9 | 23 | 88 |
How do the previous and next months compare?
Baseline: January (85/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| December | +1 | +1.2 °C | +1.5 °C | +0.6 | +6.5 mm | -0.3 h | +0.2 % | ±0 m/s | +1.3 °C |
| February | +3 | +0.3 °C | +0.5 °C | -1.5 | -7.8 mm | +1.2 h | +0.6 % | -0.3 m/s | -0.1 °C |
All twelve months in context
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Frequently asked questions
How warm is Key West in January?
The average daily high is around 23 °C, with an average daily low of about 21 °C.
Can you swim in Key West in January?
The sea is about 23 °C (swimmable).
Does it rain a lot in Key West in January?
The curated estimate is about 7 rainy days per month, not a directly measured long-term average. Total precipitation averages around 47 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Key West?
By the climate score, February, March, April and December are the strongest months for Key West. For a beach trip: February, March, April and November. January is not among them.