Measurements:
°C
°F
CURRENT WEATHER
14:19
Block Island
64°F
E 13 mph
Feels like: 64°F
Precip: 0%
World Resorts USA Block Island Weather

7 Day Weather Forecast

04.23
thu
DAY
56°F
E 14 mph
precip
0%
NIGHT
48°F
S 9 mph
precip
0%
04.24
fri
DAY
48°F
NE 2 mph
precip
0%
NIGHT
44°F
NW 11 mph
precip
0%
04.25
sat
DAY
44°F
W 14 mph
precip
0%
NIGHT
42°F
W 13 mph
precip
100%
04.26
sun
DAY
46°F
SW 11 mph
precip
0%
NIGHT
44°F
SW 7 mph
precip
0%
04.27
mon
DAY
48°F
W 8 mph
precip
0%
NIGHT
46°F
NW 6 mph
precip
0%
04.28
tue
DAY
48°F
NW 9 mph
precip
0%
NIGHT
48°F
NW 12 mph
precip
100%
04.29
wed
DAY
50°F
NW 21 mph
precip
100%
NIGHT
50°F
NE 6 mph
precip
68%

Block Island Sea Water Temperature in April, °F

Select Year: 2026 2025 2024

The average sea surface temperature in April 2026 for Block Island was 5.4°F. The maximum and minimum values were 3.9°F and 6.8°F respectively.

Block Island on the Weather Map

Best Time to Visit Block Island
The most sunny months:
November 16 days
September 14 days
October 14 days
The most warm months:
July 77.2 °F
August 76.1 °F
September 70.9 °F
Warmest sea temperature:
August 72.3 °F
July 70.7 °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:
October 4 days
January 3 days
March 3 days
The most windy months:
December 16 mph
January 16 mph
November 16 mph
more details