07.08
fri
fri
Day
90°F
W 9 mph
Precip.
9%
9%
Night
81°F
W 8 mph
Precip.
13%
13%
08.08
sat
sat
Day
88°F
NW 8 mph
Precip.
5%
5%
Night
84°F
W 4 mph
Precip.
8%
8%
09.08
sun
sun
Day
88°F
NW 6 mph
Precip.
4%
4%
Night
84°F
NW 9 mph
Precip.
18%
18%
10.08
mon
mon
Day
88°F
NW 5 mph
Precip.
3%
3%
Night
84°F
SW 8 mph
Precip.
6%
6%
11.08
tue
tue
Day
88°F
NW 3 mph
Precip.
3%
3%
Night
84°F
SE 4 mph
Precip.
6%
6%
12.08
wed
wed
Day
86°F
E 7 mph
Precip.
8%
8%
Night
84°F
SE 6 mph
Precip.
6%
6%
13.08
thu
thu
Day
86°F
E 8 mph
Precip.
23%
23%
Night
84°F
SE 4 mph
Precip.
6%
6%
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 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.
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: 03:46
August 07, friday
0600
73°F
W
9 mph
9 mph
0900
79°F
W
11 mph
11 mph
1200
90°F
W
9 mph
9 mph
1500
88°F
W
6 mph
6 mph
1800
88°F
W
9 mph
9 mph
2100
82°F
W
11 mph
11 mph
August 08, saturday
0000
81°F
W
8 mph
8 mph
0300
81°F
NW
10 mph
10 mph
