Rattling Beach Sea Water Temperature
A cool beach on the James Bay, warmest around August at about 14.1°C. Today's reading, 7-day forecast, and monthly averages below.
Rattling Beach water temperature
Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges.
7-Day Water Temperature Forecast
Rattling Beach Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Rattling Beach occurs inJuly, August, September, October — peaking at14.1°C (57.4°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 | 2.7°C | 6.2°C | 8.6°C | Very Cold (< 16°C) |
| February | 2.4°C | 4.6°C | 7.1°C | Very Cold (< 16°C) |
| March | 2°C | 4.1°C | 5.9°C | Very Cold (< 16°C) |
| April | 0.8°C | 4.6°C | 6.8°C | Very Cold (< 16°C) |
| May | 3.8°C | 6.7°C | 10.3°C | Very Cold (< 16°C) |
| June | 6.2°C | 10.1°C | 12.6°C | Very Cold (< 16°C) |
| July | 8.9°C | 13.1°C | 15.5°C | Very Cold (< 16°C) |
| August | 11.4°C | 14.1°C | 16.4°C | Very Cold (< 16°C) |
| SeptemberCurrent | 11.9°C | 13.4°C | 15.9°C | Very Cold (< 16°C) |
| October | 9.8°C | 11.5°C | 12.9°C | Very Cold (< 16°C) |
| November | 8.4°C | 10.2°C | 12.5°C | Very Cold (< 16°C) |
| December | 4.6°C | 8.3°C | 10.7°C | Very Cold (< 16°C) |
Swimming FAQs for Rattling Beach
Is the sea warm enough to swim in Rattling Beach today?
Typical sea surface temperature in Rattling Beach this time of year is 13.4°C (56.1°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 Rattling Beach?
The highest water temperatures in Rattling Beach typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Rattling Beach in September?
Historically in September, water temperatures in Rattling Beach average around13.4°C (56.1°F), fluctuating between a recorded minimum of 11.9°C and a maximum of 15.9°C.