Weather in Key West in March 2026
Average weather
Average temperature in Key West in March
Going from a maximum of +84°F during the day to a minimum of +64°F during the night, the temperature in March averages around +81°F.
The average maximum temperature goes up 9% by the end of the month, compared with the beginning of the month, from +81°F to +82°F.
Is Key West warm or cold in March?
Key West is typically warm in March.
Maximum temperatures go up compared to the previous month from +73°F to +75°F. The minimum temperature also goes up from +68°F to +70°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
March is one of the coolest months in Key West, here is the comparison with other months:
Climate in Key West in March
| February | March | April | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +73°F | +75°F | +79°F | ||||
| Min. temperature | ||||||
| +48°F | +52°F | +57°F | ||||
| Max. temperature | ||||||
| +86°F | +86°F | +90°F | ||||
| Rainfall | ||||||
| 38 mm | 41 mm | 46 mm | ||||
| Wind | ||||||
| 5 m/s | 5 m/s | 5 m/s | ||||
| Humidity | ||||||
| 76% | 74% | 73% | ||||
| Air pressure | ||||||
| 1017 HPa | 1016 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 10 | 13 | 13 | ||||
| Cloudy days | ||||||
| 9 | 8 | 7 | ||||
| Rainy days | ||||||
| 9 | 9 | 10 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
March weather is still as good as in February. It’s getting warmer as March arrives. The average maximum temperature goes up from +73°F to +75°F during the day. Prepare for more rain. Average rainfall goes from 38 mm to 41 mm. It feels drier, as humidity decreases from 76% to 74%. The average wind speed doesn’t change much during March, staying around 5 m/s. The good news is there are likely to be more sunny days in March, from 10 to 13.
April brings much the same weather, it remains good.
Wind
The average wind speed is 5 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Key West is gradually increasing during March, going from 3 m/s to 8 m/s over the course of the month.
Rain
How was the weather last March in Key West?
Climate Change Over the Years
The climate in Key West in March has not changed that much over the last 43 years.
The average temperature was the lowest in 1981 (+77°F) and the highest in 2019 (+85°F). The driest year was 2009 with only 624 mm of rainfall, and the wettest year was 2024 with 1925 mm.
FAQ
Is March a good time to visit Key West?
Can you sunbathe in Key West in March?
Is Key West rainy in March?
Is it sunny in Key West in March?
Other cities in USA
Monthly weather in Key West
Source of the data
For this page, we’ve looked at the typical weather in Key West, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
