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Climate of Key West
Key West has a tropical savanna climate. It is warm every month with both a wet and dry season. The average annual temperature for Key West is 50° degrees and there is about 272 inch of rain in a year. It is dry for 136 days a year with an average humidity of 76% and an UV-index of 7.
Climate averages for the whole year
- Day: the average daily temperature during the day is between 23°C and 30°C
- Night:the average nighttime temperature is between 21°C and 29°C
- Sea temperature: the sea temperature is between 24°C and 32°C
- Rain: it rains 186 days and there is a total of approximately 688 mm rainfall
- Sun hours: throughout the year there are 3355 sun hours
| Maximum temperature: | between 23°C and 30°C |
| Warmest month: | 30°C in August |
| Coldest month: | 23°C in January |
| Night temperature: | between 21°C and 29°C |
| Sea temperature: | between 24°C and 32°C |
| Dry days: | 179 days |
| Days with rain: | 186 days |
| Days with snow: | 0 days |
| Total rain sum: | 688 mm |
| Hours of sunshine: | 3355 hours |
Temperature graph
This graph shows the average maximum temperature (red) and minimum temperature (blue) for Key West.
Precipitation graph
This graph shows the average amount of rainfall per month for Key West.
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Climate table of Key West
In this climate table you can see at a glance what the average weather per month is for Key West. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Key West might be like in a given month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day temp. (°F) | 73 | 73 | 74 | 78 | 80 | 83 | 85 | 85 | 85 | 82 | 78 | 76 |
| Night temp. (°F) | 69 | 70 | 71 | 76 | 79 | 82 | 84 | 84 | 83 | 80 | 75 | 73 |
| Water temp. (°F) | 75 | 75 | 78 | 81 | 85 | 86 | 88 | 89 | 87 | 86 | 82 | 77 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Precipitation (inch) | 12 | 10 | 7 | 14 | 22 | 28 | 30 | 40 | 45 | 39 | 13 | 10 |
| Days with rain | 11 | 10 | 11 | 12 | 15 | 18 | 20 | 22 | 23 | 19 | 13 | 12 |
| Dry days | 20 | 18 | 20 | 18 | 16 | 12 | 11 | 9 | 7 | 12 | 17 | 19 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Sun hours per day | 7 | 9 | 9 | 10 | 12 | 11 | 12 | 10 | 9 | 8 | 7 | 6 |
| Wind force (Bft) | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 |
| UV-index | 5 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 |
Best time to visit Key West
The best time to visit Key West in the state of Florida is from January through July and October through December. In this period you have a warm temperature and little precipitation. The highest average temperature in Key West is 85°F in July and the lowest is 73°F in January. The highest water temperature is 89°F and at its coldest the water is 75°F.
Climate of Key West by month
What is the average climate in a given month for Key West? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.
Key West weather experiences
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