Rhode Island, United States
James Bay41.70°N, 71.41°WStation UN-RHO-SAN

Sandy Beach Sea Water Temperature

A temperate beach on the James Bay, warmest around August at about 20.8°C. Today's reading, 7-day forecast, and monthly averages below.

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Water Temperature NowBuoy & Sentinel-3 SST

Sandy Beach water temperature

19.6
67.3°FCool / Refreshing (16°C – 20°C)

Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing.

+0°vs Sep avgJames Bay41.70°N, 71.41°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
21°C
70°F onshore
Wind Speed
12 km/h
Surface wind
Wave Height
0.8 m
Slight shore chop
Swell
0.6 m
Deep water swell
Wave Period
6 s
Peak interval
UV Index
—
Daily maximum
Sunrise
—
First morning light
Sunset
—
Golden hour close

7-Day Water Temperature Forecast

Open-Meteo ocean model
Today
WedSep 30
19.6°C
67.3°F
Waves: 1m
Refreshing
ThuOct 1
19.9°C
67.8°F
Waves: 0.9m
Refreshing
FriOct 2
20°C
68°F
Waves: 0.7m
Comfortable
SatOct 3
19.9°C
67.8°F
Waves: 0.6m
Refreshing
SunOct 4
19.6°C
67.3°F
Waves: 0.7m
Refreshing
MonOct 5
19.3°C
66.7°F
Waves: 0.9m
Refreshing
TueOct 6
19.2°C
66.6°F
Waves: 1m
Refreshing
Forecast cooling trend: -0.4°C over 7 days at Sandy Beach.
Confidence: High

Sandy Beach Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Sandy Beach occurs inJuly, August, September, October — peaking at20.8°C (69.4°F) in August.

Year-Round Water Temperature Curve (°C / °F)

Hover a bar for details
Current month Comfortable (20–24°C) Warm (24°C+) Cool (<20°C)
7
Jan
5
Feb
4
Mar
7
Apr
11
May
16
Jun
20
Jul
21
Aug
Current
20
Sep
17
Oct
13
Nov
10
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January3.1°C6.6°C9.2°CVery Cold (< 16°C)
February2.8°C4.5°C7.1°CVery Cold (< 16°C)
March1.5°C4.4°C7.6°CVery Cold (< 16°C)
April3.7°C6.8°C10.6°CVery Cold (< 16°C)
May8.5°C10.9°C16.1°CVery Cold (< 16°C)
June9.9°C15.9°C20°CVery Cold (< 16°C)
July17.5°C19.7°C22.1°CCool / Refreshing (16°C – 20°C)
August17.7°C20.8°C23.5°CComfortable (20°C – 24°C)
SeptemberCurrent17.3°C19.6°C21.8°CCool / Refreshing (16°C – 20°C)
October14.2°C16.7°C19.1°CCool / Refreshing (16°C – 20°C)
November10.7°C13.1°C16.1°CVery Cold (< 16°C)
December6.9°C9.5°C11.9°CVery Cold (< 16°C)

Swimming FAQs for Sandy Beach

Is the sea warm enough to swim in Sandy Beach today?

Typical sea surface temperature in Sandy Beach this time of year is 19.6°C (67.3°F) — classified as Cool / Refreshing (16°C – 20°C). Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing. Live readings load automatically.

What are the warmest months for swimming in Sandy Beach?

The highest water temperatures in Sandy Beach typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Sandy Beach in September?

Historically in September, water temperatures in Sandy Beach average around19.6°C (67.3°F), fluctuating between a recorded minimum of 17.3°C and a maximum of 21.8°C.

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Sandy Beach Coastal Zone Map

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