Current sea water temperature:
+64.0°F
| Minimum sea water temperature in September: | 72.7°F |
| Maximum sea water temperature in September: | 62.8°F |
| Average sea water temperature in September: | 68.3°F |
| more information | |
14 days
forecast
forecast
| Block Island |
monthly
weather
weather
| Block Island |
Sea water temperature for the last 10 days:
| September 28 | 64.0°F | September 23 | 67.5°F |
| September 27 | 65.1°F | September 22 | 68.7°F |
| September 26 | 65.1°F | September 21 | 67.8°F |
| September 25 | 65.1°F | September 20 | 68.2°F |
| September 24 | 64.9°F | September 19 | 70.2°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 70.2°F. The highest and lowest sea temperatures during the month were 72.3°F and 68.5°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 67.3°F. The highest and lowest sea temperatures during the month were 69.3°F and 65.5°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 68.2°F. The highest and lowest sea temperatures during the month were 70.3°F and 64.0°F.
current
weather
weather
| Block Island |
weather in
October
October
| 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: 13:56
September 28, monday
1500
63°F
S
16 mph
16 mph
1800
59°F
S
22 mph
22 mph
2100
57°F
S
20 mph
20 mph
September 29, tuesday
0000
55°F
SE
17 mph
17 mph
0300
55°F
SE
13 mph
13 mph
0600
57°F
SE
11 mph
11 mph
0900
57°F
SE
9 mph
9 mph
1200
63°F
E
9 mph
9 mph
