Greystone Beach Sea Water Temperature
A cool beach on the James Bay, warmest around August at about 19°C. Today's reading, 7-day forecast, and monthly averages below.
Greystone Beach water temperature
Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing.
7-Day Water Temperature Forecast
Greystone Beach Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Greystone Beach occurs inJune, July, August, September — peaking at19°C (66.2°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 | 5.5°C | 8°C | Very Cold (< 16°C) |
| February | 2.3°C | 3.6°C | 5.3°C | Very Cold (< 16°C) |
| March | 1.4°C | 3.8°C | 6.3°C | Very Cold (< 16°C) |
| April | 4°C | 6.2°C | 9.1°C | Very Cold (< 16°C) |
| May | 7.4°C | 10.5°C | 15.1°C | Very Cold (< 16°C) |
| June | 12°C | 15.1°C | 18°C | Very Cold (< 16°C) |
| July | 15.9°C | 18.4°C | 21.7°C | Cool / Refreshing (16°C – 20°C) |
| August | 16.5°C | 19°C | 21.7°C | Cool / Refreshing (16°C – 20°C) |
| SeptemberCurrent | 15.3°C | 17.6°C | 20.9°C | Cool / Refreshing (16°C – 20°C) |
| October | 10.6°C | 14.2°C | 17.1°C | Very Cold (< 16°C) |
| November | 8.5°C | 10.7°C | 13.8°C | Very Cold (< 16°C) |
| December | 5.6°C | 7.9°C | 10.3°C | Very Cold (< 16°C) |
Swimming FAQs for Greystone Beach
Is the sea warm enough to swim in Greystone Beach today?
Typical sea surface temperature in Greystone Beach this time of year is 17.6°C (63.7°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 Greystone Beach?
The highest water temperatures in Greystone Beach typically occur duringJune, July, August, September, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Greystone Beach in September?
Historically in September, water temperatures in Greystone Beach average around17.6°C (63.7°F), fluctuating between a recorded minimum of 15.3°C and a maximum of 20.9°C.