Seaside Beach Sea Water Temperature
A temperate beach on the James Bay, warmest around August at about 23.4°C. Today's reading, 7-day forecast, and monthly averages below.
Seaside Beach water temperature
Pleasant and revitalizing. Great for most beachgoers and active recreational swimming.
7-Day Water Temperature Forecast
Seaside Beach Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Seaside Beach occurs inJuly, August, September — peaking at23.4°C (74.1°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 | 7.8°C | Very Cold (< 16°C) |
| February | -0.6°C | 2°C | 4.7°C | Very Cold (< 16°C) |
| March | -0.8°C | 3.4°C | 7.5°C | Very Cold (< 16°C) |
| April | 3.4°C | 6.8°C | 10.9°C | Very Cold (< 16°C) |
| May | 9.4°C | 13.4°C | 23.7°C | Very Cold (< 16°C) |
| June | 12.6°C | 19°C | 27.4°C | Cool / Refreshing (16°C – 20°C) |
| July | 20.4°C | 22.5°C | 27.3°C | Comfortable (20°C – 24°C) |
| August | 21.2°C | 23.4°C | 25.2°C | Comfortable (20°C – 24°C) |
| SeptemberCurrent | 19.3°C | 22.3°C | 25.3°C | Comfortable (20°C – 24°C) |
| October | 14.7°C | 18.4°C | 23.3°C | Cool / Refreshing (16°C – 20°C) |
| November | 10°C | 13°C | 16.2°C | Very Cold (< 16°C) |
| December | 5.3°C | 8°C | 10.8°C | Very Cold (< 16°C) |
Swimming FAQs for Seaside Beach
Is the sea warm enough to swim in Seaside Beach today?
Typical sea surface temperature in Seaside Beach this time of year is 22.3°C (72.1°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 Seaside Beach?
The highest water temperatures in Seaside Beach typically occur duringJuly, August, September, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Seaside Beach in September?
Historically in September, water temperatures in Seaside Beach average around22.3°C (72.1°F), fluctuating between a recorded minimum of 19.3°C and a maximum of 25.3°C.