Weather in Siesta Key: May
 |
Average day temperature: | 84.9°F |
| Average night temperature: | 73.7°F | |
 |
Sea water temperature: | 80.8°F |
 |
Number of sunny days: | 18 days |
| Day length: | 13.2 - 13.7 hours | |
 |
Number of rainy days: | 2 days |
| Precipitation totals: | 0.9 in. | |
| more information | ||
14 days
forecast
forecast
| Siesta Key |
sea water
temperature
temperature
| Siesta Key |
Air temperature in May, °F
Show year:
2025
2024
2023
The highest day temperature during May of 2025 was 95°F. At the same time the lowest night temperature was 61°F. Daily and nightly averages during May were 89.0°F and 73.2°F.
Sea water temperature in Siesta Key in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 82.5°F. The highest and lowest sea temperatures during the month were 86.9°F and 77.7°F.
Sunny, partly cloudy and cloudy days
Mostly all days in May are sunny but cloudy days are also possible.
Precipitation total in May, in.
Precipitation total value in Siesta Key in May is 0.9 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 9.0 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 9.6.
Best time for vacation in Siesta Key
Siesta Key on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Siesta Key
Local time: 11:39
December 18, thursday
1200
79°F
NW
14 mph
14 mph
1500
79°F
N
14 mph
14 mph
1800
77°F
N
12 mph
12 mph
2100
73°F
N
14 mph
14 mph
December 19, friday
0000
72°F
N
14 mph
14 mph
0300
72°F
NE
10 mph
10 mph
0600
72°F
E
10 mph
10 mph
0900
73°F
E
11 mph
11 mph
