Rocky Beach Sea Water Temperature
A temperate beach on the James Bay, warmest around August at about 23.2°C. Today's reading, 7-day forecast, and monthly averages below.
Rocky Beach water temperature
Pleasant and revitalizing. Great for most beachgoers and active recreational swimming.
7-Day Water Temperature Forecast
Rocky Beach Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Rocky Beach occurs inJuly, August, September — peaking at23.2°C (73.8°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 | 1.2°C | 4.4°C | 7.9°C | Very Cold (< 16°C) |
| February | -0.7°C | 2.1°C | 4.6°C | Very Cold (< 16°C) |
| March | -0.7°C | 3.4°C | 7.3°C | Very Cold (< 16°C) |
| April | 3.5°C | 6.8°C | 11°C | Very Cold (< 16°C) |
| May | 9.6°C | 13°C | 22.4°C | Very Cold (< 16°C) |
| June | 12.7°C | 18.5°C | 26°C | Cool / Refreshing (16°C – 20°C) |
| July | 20.1°C | 22.1°C | 25.4°C | Comfortable (20°C – 24°C) |
| August | 20.9°C | 23.2°C | 25°C | Comfortable (20°C – 24°C) |
| SeptemberCurrent | 19.4°C | 22.1°C | 24.8°C | Comfortable (20°C – 24°C) |
| October | 14.7°C | 18.4°C | 22.1°C | Cool / Refreshing (16°C – 20°C) |
| November | 10°C | 13°C | 16.3°C | Very Cold (< 16°C) |
| December | 5.4°C | 8.1°C | 10.9°C | Very Cold (< 16°C) |
Swimming FAQs for Rocky Beach
Is the sea warm enough to swim in Rocky Beach today?
Typical sea surface temperature in Rocky Beach this time of year is 22.1°C (71.8°F) — classified as Comfortable (20°C – 24°C). Pleasant and revitalizing. Great for most beachgoers and active recreational swimming. Live readings load automatically.
What are the warmest months for swimming in Rocky Beach?
The highest water temperatures in Rocky Beach typically occur duringJuly, August, September, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Rocky Beach in September?
Historically in September, water temperatures in Rocky Beach average around22.1°C (71.8°F), fluctuating between a recorded minimum of 19.4°C and a maximum of 24.8°C.