Measurements:
°C
°F
CURRENT WEATHER
00:45
Block Island
60°F
SE 14 mph
Feels like: 60°F
Precip: 19%
World Resorts USA Block Island Weather

7 Day Weather Forecast

10.27
tue
DAY
52°F
SW 13 mph
precip
11%
NIGHT
52°F
NW 7 mph
precip
16%
10.28
wed
DAY
54°F
N 7 mph
precip
15%
NIGHT
58°F
NE 13 mph
precip
17%
10.29
thu
DAY
60°F
NE 14 mph
precip
10%
NIGHT
60°F
NE 21 mph
precip
13%
10.30
fri
DAY
62°F
E 12 mph
precip
22%
NIGHT
54°F
SE 17 mph
precip
5%
10.31
sat
DAY
52°F
S 13 mph
precip
6%
NIGHT
54°F
NE 2 mph
precip
17%
11.01
sun
DAY
58°F
N 11 mph
precip
15%
NIGHT
60°F
N 14 mph
precip
23%
11.02
mon
DAY
60°F
N 11 mph
precip
55%
NIGHT
60°F
W 3 mph
precip
84%

Block Island Sea Water Temperature in October, °F

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for Block Island was 17.0°F. The maximum and minimum values were 15.2°F and 18.4°F respectively.

Block Island on the Weather Map

Best Time to Visit Block Island
The most sunny months:
November 16 days
June 14 days
December 14 days
The most warm months:
July 77.6 °F
August 76.8 °F
September 71.0 °F
Warmest sea temperature:
August 72.3 °F
July 70.5 °F
September 70.3 °F
The most cold months:
January 35.4 °F
February 35.4 °F
December 41.7 °F
The most rainy months:
January 3 days
March 3 days
October 3 days
The most windy months:
December 16 mph
January 16 mph
November 16 mph
more details