Typical May weather
Key West
Florida · May
86° days
76° nights
about 4 rainy days · 13½ hours of daylight · ocean 85°
What to pack
- Swimsuit
- Sunscreen
What May feels like
May is when the wet season creeps back and the tarpon roll through the harbor — every bridge has somebody standing on it. Room rates soften noticeably the closer you get to June.
Expect about 4 days with real rain — enough to notice, not enough to plan around. Full tropical humidity: mornings are your friend, and shade is currency.
Can you swim?
The ocean runs about 85° — bath-warm.
The numbers
| Typical high | 86° |
|---|---|
| Typical low | 76° |
| Days with real rain | 4 |
| Total rain | 3.1 in |
| Humidity | tropical |
| Water temperature | 85° |
| Sunrise / sunset (mid-month) | 6:43 am / 8:03 pm |