World Resorts

USA

Block Island Weather

Block Island 14 Days Forecast

28.09
mon

Day

63°F

SW 13 mph

Precip.
71%

Night

55°F

SE 17 mph

Precip.
39%

29.09
tue

Day

63°F

E 9 mph

Precip.
14%

Night

64°F

SW 4 mph

Precip.
28%

30.09
wed

Day

63°F

N 5 mph

Precip.
14%

Night

64°F

NE 11 mph

Precip.
25%

01.10
thu

Day

66°F

NE 11 mph

Precip.
28%

Night

64°F

NE 13 mph

Precip.
30%

02.10
fri

Day

66°F

NE 12 mph

Precip.
23%

Night

59°F

SE 19 mph

Precip.
16%

03.10
sat

Day

57°F

S 12 mph

Precip.
5%

Night

59°F

SW 5 mph

Precip.
2%

04.10
sun

Day

57°F

NW 14 mph

Precip.
6%

Night

63°F

NW 25 mph

Precip.
36%

05.10
mon

Day

66°F

NE 25 mph

Precip.
82%

Night

64°F

E 21 mph

Precip.
22%

06.10
tue

Day

59°F

E 20 mph

Precip.
6%

Night

55°F

SE 15 mph

Precip.
5%

07.10
wed

Day

55°F

SW 6 mph

Precip.
4%

Night

55°F

W 14 mph

Precip.
5%

08.10
thu

Day

55°F

SW 15 mph

Precip.
8%

Night

55°F

SW 14 mph

Precip.
21%

09.10
fri

Day

57°F

SW 18 mph

Precip.
20%

Night

54°F

SW 17 mph

Precip.
22%

10.10
sat

Day

55°F

SW 24 mph

Precip.
30%

Night

57°F

SW 29 mph

Precip.
80%

11.10
sun

Day

59°F

SW 16 mph

Precip.
31%

Night

64°F

NW 19 mph

Precip.
45%

sea water
temperature

Block Island

monthly
weather

Block Island

current
weather

Block Island

7 days
forecast

Block Island

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February
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May
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September
October
November
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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.

Show year:

2025

2024

2023

The average sea water temperature in October of 2025 was 64.4°F. The highest and lowest sea temperatures during the month were 68.2°F and 59.9°F.