Current sea water temperature:
+35.6°F
| Minimum sea water temperature in February: | 44.2°F |
| Maximum sea water temperature in February: | 35.6°F |
| Average sea water temperature in February: | 40.7°F |
| more information | |
14 days
forecast
forecast
| Block Island |
monthly
weather
weather
| Block Island |
Sea water temperature for the last 10 days:
| February 26 | 35.6°F | February 21 | 36.3°F |
| February 25 | 36.3°F | February 20 | 36.7°F |
| February 24 | 36.7°F | February 19 | 36.5°F |
| February 23 | 36.7°F | February 18 | 36.3°F |
| February 22 | 36.5°F | February 17 | 36.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Block Island?
Based on the data about daily sea water temperature for the last three years the warmest sea in Block Island was noticed in August, July and September.
Monthly Sea Temperatures in Block Island, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 69.0°F. The highest and lowest sea temperatures during the month were 71.1°F and 66.9°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 68.5°F. The highest and lowest sea temperatures during the month were 71.6°F and 65.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 68.0°F. The highest and lowest sea temperatures during the month were 68.9°F and 66.6°F.
current
weather
weather
| Block Island |
weather in
March
March
| Block Island |
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: 18:05
February 26, thursday
2100
32°F
S
9 mph
9 mph
February 27, friday
0000
30°F
S
12 mph
12 mph
0300
27°F
S
9 mph
9 mph
0600
28°F
S
7 mph
7 mph
0900
30°F
S
2 mph
2 mph
1200
34°F
NE
5 mph
5 mph
1500
39°F
NE
9 mph
9 mph
1800
41°F
NE
9 mph
9 mph
