St. Martin, Saint Martin
Caribbean Sea18.12°N, 62.99°WStation SA-STM-BAI

Baie Blanche Sea Water Temperature

A tropical beach on the Caribbean Sea, warmest around October at about 29°C. Today's reading, 7-day forecast, and monthly averages below.

Live readings · auto-updating
Water Temperature NowBuoy & Sentinel-3 SST

Baie Blanche water temperature

28.9
84°FTropical Warm (> 28°C)

Very warm bath-like water. Zero chill, exceptional for relaxation and snorkeling.

+0°vs Sep avgCaribbean Sea18.12°N, 62.99°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
30°C
86.7°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
28.9°C
84°F
Waves: 1m
Tropical
ThuOct 1
29.2°C
84.6°F
Waves: 0.9m
Tropical
FriOct 2
29.3°C
84.7°F
Waves: 0.7m
Tropical
SatOct 3
29.2°C
84.6°F
Waves: 0.6m
Tropical
SunOct 4
28.9°C
84°F
Waves: 0.7m
Tropical
MonOct 5
28.6°C
83.5°F
Waves: 0.9m
Tropical
TueOct 6
28.5°C
83.3°F
Waves: 1m
Tropical
Forecast cooling trend: -0.4°C over 7 days at Baie Blanche.
Confidence: High

Baie Blanche Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Baie Blanche occurs inJanuary, February, March, April, May, June, July, August, September, October, November, December — peaking at29°C (84.2°F) in October.

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

Hover a bar for details
Current month Comfortable (20–24°C) Warm (24°C+) Cool (<20°C)
27
Jan
26
Feb
26
Mar
27
Apr
27
May
28
Jun
28
Jul
29
Aug
Current
29
Sep
29
Oct
28
Nov
27
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January25.4°C26.5°C27.5°CWarm & Ideal (24°C – 28°C)
February25.3°C26.2°C27°CWarm & Ideal (24°C – 28°C)
March25.1°C26.2°C27.3°CWarm & Ideal (24°C – 28°C)
April25.8°C26.7°C27.8°CWarm & Ideal (24°C – 28°C)
May25.9°C27.4°C28.6°CWarm & Ideal (24°C – 28°C)
June26.9°C28°C29.3°CTropical Warm (> 28°C)
July27.3°C28.3°C29.6°CTropical Warm (> 28°C)
August28°C28.8°C29.6°CTropical Warm (> 28°C)
SeptemberCurrent27.8°C28.9°C30°CTropical Warm (> 28°C)
October28°C29°C30.6°CTropical Warm (> 28°C)
November27.7°C28.4°C29.9°CTropical Warm (> 28°C)
December26.7°C27.4°C28.8°CWarm & Ideal (24°C – 28°C)

Swimming FAQs for Baie Blanche

Is the sea warm enough to swim in Baie Blanche today?

Typical sea surface temperature in Baie Blanche this time of year is 28.9°C (84°F) — classified as Tropical Warm (> 28°C). Very warm bath-like water. Zero chill, exceptional for relaxation and snorkeling. Live readings load automatically.

What are the warmest months for swimming in Baie Blanche?

The highest water temperatures in Baie Blanche typically occur duringJanuary, February, March, April, May, June, July, August, September, October, November, December, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Baie Blanche in September?

Historically in September, water temperatures in Baie Blanche average around28.9°C (84.0°F), fluctuating between a recorded minimum of 27.8°C and a maximum of 30°C.

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Baie Blanche Coastal Zone Map

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