18.03
wed
wed
Day
64°F
SW 11 mph
Precip.
0%
0%
Night
59°F
SW 15 mph
Precip.
0%
0%
19.03
thu
thu
Day
66°F
SW 13 mph
Precip.
0%
0%
Night
63°F
SW 9 mph
Precip.
0%
0%
20.03
fri
fri
Day
72°F
S 7 mph
Precip.
0%
0%
Night
68°F
S 9 mph
Precip.
0%
0%
21.03
sat
sat
Day
70°F
N 3 mph
Precip.
0%
0%
Night
66°F
S 7 mph
Precip.
0%
0%
22.03
sun
sun
Day
72°F
E 3 mph
Precip.
0%
0%
Night
70°F
SW 7 mph
Precip.
0%
0%
23.03
mon
mon
Day
73°F
N 5 mph
Precip.
0%
0%
Night
70°F
S 11 mph
Precip.
0%
0%
24.03
tue
tue
Day
73°F
N 6 mph
Precip.
0%
0%
Night
72°F
NW 12 mph
Precip.
0%
0%
25.03
wed
wed
Day
75°F
N 9 mph
Precip.
0%
0%
Night
70°F
SW 7 mph
Precip.
0%
0%
26.03
thu
thu
Day
77°F
NW 12 mph
Precip.
100%
100%
Night
72°F
W 9 mph
Precip.
0%
0%
27.03
fri
fri
Day
75°F
W 6 mph
Precip.
100%
100%
Night
70°F
W 6 mph
Precip.
0%
0%
28.03
sat
sat
Day
79°F
SW 12 mph
Precip.
49%
49%
Night
72°F
W 15 mph
Precip.
0%
0%
29.03
sun
sun
Day
75°F
W 15 mph
Precip.
23%
23%
Night
72°F
W 10 mph
Precip.
0%
0%
30.03
mon
mon
Day
75°F
W 6 mph
Precip.
100%
100%
Night
73°F
S 11 mph
Precip.
100%
100%
31.03
tue
tue
Day
72°F
SW 23 mph
Precip.
0%
0%
Night
68°F
SW 22 mph
Precip.
0%
0%
sea water
temperature
temperature
| Siesta Key |
monthly
weather
weather
| Siesta Key |
current
weather
weather
| Siesta Key |
7 days
forecast
forecast
| Siesta Key |
Sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 70.4°F. The highest and lowest sea temperatures during the month were 73.8°F and 65.3°F.
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 75.7°F. The highest and lowest sea temperatures during the month were 78.8°F and 72.5°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: 08:08
March 18, wednesday
0900
50°F
SW
14 mph
14 mph
1200
64°F
SW
11 mph
11 mph
1500
73°F
S
7 mph
7 mph
1800
70°F
S
12 mph
12 mph
2100
64°F
SW
13 mph
13 mph
March 19, thursday
0000
59°F
SW
15 mph
15 mph
0300
57°F
SW
13 mph
13 mph
0600
54°F
SW
14 mph
14 mph
