18.05
mon
mon
Day
86°F
W 11 mph
Precip.
0%
0%
Night
77°F
W 11 mph
Precip.
0%
0%
19.05
tue
tue
Day
86°F
W 7 mph
Precip.
0%
0%
Night
77°F
W 11 mph
Precip.
0%
0%
20.05
wed
wed
Day
84°F
NW 4 mph
Precip.
0%
0%
Night
75°F
W 3 mph
Precip.
0%
0%
21.05
thu
thu
Day
82°F
NW 3 mph
Precip.
0%
0%
Night
79°F
W 14 mph
Precip.
0%
0%
22.05
fri
fri
Day
82°F
N 3 mph
Precip.
0%
0%
Night
81°F
W 6 mph
Precip.
52%
52%
23.05
sat
sat
Day
81°F
NE 8 mph
Precip.
0%
0%
Night
81°F
E 6 mph
Precip.
55%
55%
24.05
sun
sun
Day
82°F
N 8 mph
Precip.
55%
55%
Night
81°F
W 9 mph
Precip.
40%
40%
sea water
temperature
temperature
| Siesta Key |
monthly
weather
weather
| Siesta Key |
current
weather
weather
| Siesta Key |
14 days
forecast
forecast
| Siesta Key |
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 79.9°F. The highest and lowest sea temperatures during the month were 82.4°F and 77.2°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 85.8°F. The highest and lowest sea temperatures during the month were 86.9°F and 83.8°F.
Air temperature in Siesta Key, °F
Precipitation total in Siesta Key, in.
* Charts above show average data for the last 3 years.
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: 01:49
May 18, monday
0300
73°F
W
13 mph
13 mph
0600
73°F
W
11 mph
11 mph
0900
79°F
W
14 mph
14 mph
1200
86°F
W
11 mph
11 mph
1500
86°F
NE
8 mph
8 mph
1800
82°F
E
11 mph
11 mph
2100
81°F
NW
6 mph
6 mph
May 19, tuesday
0000
77°F
W
11 mph
11 mph
