Current sea water temperature:
+75.7°F
| Minimum sea water temperature in April: | 80.2°F |
| Maximum sea water temperature in April: | 70.9°F |
| Average sea water temperature in April: | 75.8°F |
| more information | |
14 days
forecast
forecast
| Siesta Key |
monthly
weather
weather
| Siesta Key |
Sea water temperature for the last 10 days:
| April 27 | 75.7°F | April 22 | 74.7°F |
| April 26 | 74.1°F | April 21 | 74.8°F |
| April 25 | 74.5°F | April 20 | 74.7°F |
| April 24 | 72.7°F | April 19 | 73.9°F |
| April 23 | 73.6°F | April 18 | 74.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Siesta Key?
Based on the data about daily sea water temperature for the last three years the warmest sea in Siesta Key was noticed in August, July and September.
Monthly Sea Temperatures in Siesta Key, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 88.6°F. The highest and lowest sea temperatures during the month were 90.1°F and 86.7°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 86.9°F. The highest and lowest sea temperatures during the month were 89.1°F and 85.6°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 84.9°F. The highest and lowest sea temperatures during the month were 86.7°F and 83.3°F.
current
weather
weather
| Siesta Key |
weather in
May
May
| Siesta Key |
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: 15:34
April 27, monday
1800
81°F
W
12 mph
12 mph
2100
77°F
W
11 mph
11 mph
April 28, tuesday
0000
73°F
W
15 mph
15 mph
0300
70°F
SW
11 mph
11 mph
0600
68°F
SW
9 mph
9 mph
0900
72°F
W
9 mph
9 mph
1200
79°F
NW
2 mph
2 mph
1500
77°F
E
16 mph
16 mph
