18.03
wed
wed
Day
34°F
S 9 mph
Precip.
0%
0%
Night
30°F
N 7 mph
Precip.
0%
0%
19.03
thu
thu
Day
36°F
NW 11 mph
Precip.
0%
0%
Night
39°F
NE 11 mph
Precip.
0%
0%
20.03
fri
fri
Day
41°F
NE 9 mph
Precip.
0%
0%
Night
43°F
N 20 mph
Precip.
100%
100%
21.03
sat
sat
Day
41°F
NW 4 mph
Precip.
0%
0%
Night
41°F
W 8 mph
Precip.
0%
0%
22.03
sun
sun
Day
43°F
NE 12 mph
Precip.
0%
0%
Night
41°F
NW 3 mph
Precip.
67%
67%
23.03
mon
mon
Day
34°F
SW 25 mph
Precip.
100%
100%
Night
34°F
NW 16 mph
Precip.
0%
0%
24.03
tue
tue
Day
34°F
S 18 mph
Precip.
0%
0%
Night
36°F
NE 12 mph
Precip.
0%
0%
sea water
temperature
temperature
| Block Island |
monthly
weather
weather
| Block Island |
current
weather
weather
| Block Island |
14 days
forecast
forecast
| Block Island |
Sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 36.9°F. The highest and lowest sea temperatures during the month were 38.7°F and 35.2°F.
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 44.0°F. The highest and lowest sea temperatures during the month were 46.9°F and 42.3°F.
Air temperature in Block Island, °F
Precipitation total in Block Island, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Block Island
Block Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Block Island
Local time: 17:32
March 18, wednesday
1800
36°F
N
9 mph
9 mph
2100
32°F
N
7 mph
7 mph
March 19, thursday
0000
30°F
N
7 mph
7 mph
0300
30°F
NW
4 mph
4 mph
0600
32°F
W
6 mph
6 mph
0900
34°F
NW
9 mph
9 mph
1200
36°F
NW
11 mph
11 mph
1500
37°F
N
9 mph
9 mph
