Oceanside City Beach Sea Water Temperature
A mild beach on the Gulf of California, warmest around August at about 21.6°C. Today's reading, 7-day forecast, and monthly averages below.
Oceanside City Beach water temperature
Pleasant and revitalizing. Great for most beachgoers and active recreational swimming.
7-Day Water Temperature Forecast
Oceanside City Beach Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Oceanside City Beach occurs inJuly, August, September, October — peaking at21.6°C (70.9°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 | 13.9°C | 15.1°C | 16.6°C | Very Cold (< 16°C) |
| February | 13.8°C | 14.9°C | 17.4°C | Very Cold (< 16°C) |
| March | 13.7°C | 15.3°C | 17.7°C | Very Cold (< 16°C) |
| April | 14.1°C | 16.2°C | 17.7°C | Cool / Refreshing (16°C – 20°C) |
| May | 15.8°C | 17.6°C | 20.4°C | Cool / Refreshing (16°C – 20°C) |
| June | 16.1°C | 18.8°C | 20.8°C | Cool / Refreshing (16°C – 20°C) |
| July | 18.2°C | 21°C | 24.5°C | Comfortable (20°C – 24°C) |
| August | 19.3°C | 21.6°C | 24.5°C | Comfortable (20°C – 24°C) |
| SeptemberCurrent | 18.4°C | 21.3°C | 24.2°C | Comfortable (20°C – 24°C) |
| October | 17.7°C | 19.6°C | 23.4°C | Cool / Refreshing (16°C – 20°C) |
| November | 15.9°C | 17.8°C | 20°C | Cool / Refreshing (16°C – 20°C) |
| December | 14.4°C | 16.1°C | 19.2°C | Cool / Refreshing (16°C – 20°C) |
Swimming FAQs for Oceanside City Beach
Is the sea warm enough to swim in Oceanside City Beach today?
Typical sea surface temperature in Oceanside City Beach this time of year is 21.3°C (70.3°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 Oceanside City Beach?
The highest water temperatures in Oceanside City Beach typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Oceanside City Beach in September?
Historically in September, water temperatures in Oceanside City Beach average around21.3°C (70.3°F), fluctuating between a recorded minimum of 18.4°C and a maximum of 24.2°C.