March · United States
Best time to visit Key West in March Weather, crowds & prices
Weather in Key West in March
Average temperature 25°C, 69 mm of rain, about 28 days with 6+ hours of sunshine and 80% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
March score
8.6/10
Ranked #1 of 12 months
- Avg temp
- 25°C
- Rainfall
- 69 mm
- Humidity
- 80%
- Days with 6h+ sun
- 28
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
March in Key West scores 8.6/10 for beach and coastal travel - the single best month of the year. Expect around 25°C, 69 mm of rain, and roughly 28 days with 6+ hours of sunshine this month.
Conch pastel lanes at the end of Overseas Highway at their best in January-April.
March: the best month of the year in Key West
With 25°C (77°F) on average, March delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
Budget for roughly 69 mm of rain this month — a flexible day or two helps — with about 28 days with 6+ hours of sunshine and 11.8 hours of daylight to work around it.
On our climate-comfort scale this is the top-ranked month of the year for Key West at 8.6/10 — the reference point every other month on this page is measured against.
Pack light clothing, swimwear and real sun protection, a packable rain layer.
Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Key West in March?
- In March, Key West averages 25°C, 69 mm of rain, and about 28 days with 6+ hours of sunshine. Its climate-comfort score is 8.6/10.
- Is March a good time to visit Key West?
- March earns a 8.6/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Key West in March?
- Expect about 69 mm of rain in March. Average humidity is 80% and there are about 28 days with 6+ hours of sunshine.
Curated in Key West
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Things to do in Key West
Key West, United States. Live activities and tours from GetYourGuide, matched to this destination.