Weather in Key West in February
United States · 20-year averages, February
Prime time. If you get to pick your dates, February is the one. Highs average 23.1 °C, lows 21.6 °C, and rain falls on 5 days — nothing in the month is working against you.
February ranks 2 of 12 in Key West. Only January scores clearly higher, and the difference is small enough to be settled by price rather than weather.
Rain falls on only 5 days, so an itinerary with no wet-weather fallback is a reasonable risk. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.
What the averages hide
Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average February reaches 30 °C; the day barely swings — 1.6 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest February day reached 26.2 °C and the coldest night fell to 11.8 °C, and the wettest single day dropped 51 mm — roughly 150% of the month's rain in one day.
This is the volatile part. February rainfall has ranged from 1 mm to 172 mm across the twenty years measured — a 171 mm spread around an average of 34 mm. The average is real but almost no individual February looks like it, so treat the figure as the middle of a wide range rather than a forecast.
Wind sits around 17.6 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 80%, high enough to notice on the warm days without dominating them.
How February sits in the year
Temperatures hold steady either side: 22.7 °C in January, 23.1 here, 24 in March. Nothing about the timing within the month matters much.
Daylight in February
11.3 hours of daylight, gaining 0.6 hours across the month. That is between Key West's extremes of 13.6 and 10.6 hours, so days are long enough not to constrain the plan.
Sea temperature
The sea sits at about 24.9 °C in February — warm enough to stay in as long as you like. The sea peaks at 29.9 °C in August and bottoms out at 24.9 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.
How busy it gets
Peak season. Expect the highest prices of the year and to be booking well ahead.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
February in Key West versus nearby
If Key West is one option among several, the nearby comparison is worth making. Miami is close enough to be a coin toss — within a degree on temperature, 2 days more rain. Cape Coral is close enough to be a coin toss — within a degree on temperature, 1 day more rain.
So: February is effectively as good as it gets here — 0 points behind January, which is inside the margin where the weather stops being the deciding factor and price starts being it.
Every month in Key West
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|
| January | 22.7 | 20.8 | 5 | 32 | 78 | 10.8 | 25 | 91 |
| February | 23.1 | 21.6 | 5 | 34 | 80 | 11.3 | 24.9 | 91 |
| March | 24 | 22.6 | 5 | 26 | 77 | 12 | 25.3 | 91 |
| April | 25.5 | 24.4 | 7 | 44 | 76 | 12.7 | 26.1 | 87 |
| May | 27.1 | 26.1 | 14 | 96 | 76 | 13.3 | 27.2 | 74 |
| June | 28.8 | 27.9 | 22 | 157 | 78 | 13.6 | 28.6 | 57 |
| July | 29.5 | 28.7 | 24 | 127 | 75 | 13.5 | 29.4 | 54 |
| August | 29.9 | 29.1 | 26 | 156 | 75 | 13 | 29.9 | 52 |
| September | 29.4 | 28.5 | 23 | 177 | 77 | 12.3 | 29.4 | 54 |
| October | 28.1 | 27.1 | 16 | 116 | 77 | 11.6 | 28.6 | 64 |
| November | 25.6 | 24.4 | 8 | 49 | 76 | 11 | 27.2 | 86 |
| December | 24.1 | 22.6 | 7 | 39 | 79 | 10.6 | 26 | 87 |
See all twelve months in Key West, or where else to go in February.
Planning the rest of the trip
- Flight time to Key West how long you are actually in the air
- Key West time zone and the difference from home
- Days until your trip count down to the departure date
- Gyms & clubs in Key West keep training while you are there