Marlboro Beach Sea Water Temperature
A cool beach on the James Bay, warmest around August at about 13.1°C. Today's reading, 7-day forecast, and monthly averages below.
Marlboro Beach water temperature
Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges.
7-Day Water Temperature Forecast
Marlboro Beach Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Marlboro Beach occurs inJuly, August, September, October — peaking at13.1°C (55.6°F) in August.
Year-Round Water Temperature Curve (°C / °F)
Hover a bar for detailsFull 12-month data table — min / avg / max & swimming comfort
| Month | Min Water Temp | Average Water Temp | Max Water Temp | Swimming Comfort |
|---|---|---|---|---|
| January | 4.4°C | 6°C | 8.4°C | Very Cold (< 16°C) |
| February | 2.6°C | 4.1°C | 5.8°C | Very Cold (< 16°C) |
| March | 1.4°C | 3.6°C | 6°C | Very Cold (< 16°C) |
| April | 2.4°C | 4.6°C | 6.4°C | Very Cold (< 16°C) |
| May | 4.7°C | 6.7°C | 9.5°C | Very Cold (< 16°C) |
| June | 6.7°C | 9.4°C | 12°C | Very Cold (< 16°C) |
| July | 9.1°C | 11.7°C | 14.6°C | Very Cold (< 16°C) |
| August | 9.8°C | 13.1°C | 16°C | Very Cold (< 16°C) |
| SeptemberCurrent | 10.9°C | 12.8°C | 14.8°C | Very Cold (< 16°C) |
| October | 9.9°C | 11.7°C | 13.3°C | Very Cold (< 16°C) |
| November | 8.1°C | 10°C | 12.5°C | Very Cold (< 16°C) |
| December | 5.9°C | 8.1°C | 10°C | Very Cold (< 16°C) |
Swimming FAQs for Marlboro Beach
Is the sea warm enough to swim in Marlboro Beach today?
Typical sea surface temperature in Marlboro Beach this time of year is 12.8°C (55°F) — classified as Very Cold (< 16°C). Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges. Live readings load automatically.
What are the warmest months for swimming in Marlboro Beach?
The highest water temperatures in Marlboro Beach typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Marlboro Beach in September?
Historically in September, water temperatures in Marlboro Beach average around12.8°C (55.0°F), fluctuating between a recorded minimum of 10.9°C and a maximum of 14.8°C.