Ondarreta Sea Water Temperature
A temperate beach on the Cantabrian Sea, warmest around August at about 22.2°C. Today's reading, 7-day forecast, and monthly averages below.
Ondarreta water temperature
Pleasant and revitalizing. Great for most beachgoers and active recreational swimming.
7-Day Water Temperature Forecast
Ondarreta Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Ondarreta occurs inJune, July, August, September — peaking at22.2°C (72°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 | 3.8°C | 12.8°C | 14.9°C | Very Cold (< 16°C) |
| February | 10.8°C | 12.2°C | 13.6°C | Very Cold (< 16°C) |
| March | 11.3°C | 12.6°C | 14.3°C | Very Cold (< 16°C) |
| April | 12.3°C | 13.8°C | 17°C | Very Cold (< 16°C) |
| May | 13.1°C | 15.9°C | 18.7°C | Very Cold (< 16°C) |
| June | 16.1°C | 19.2°C | 21.5°C | Cool / Refreshing (16°C – 20°C) |
| July | 18.9°C | 21.6°C | 24.2°C | Comfortable (20°C – 24°C) |
| August | 20.3°C | 22.2°C | 25°C | Comfortable (20°C – 24°C) |
| SeptemberCurrent | 19.1°C | 21.3°C | 23°C | Comfortable (20°C – 24°C) |
| October | 17°C | 18.9°C | 22.4°C | Cool / Refreshing (16°C – 20°C) |
| November | 13.8°C | 16°C | 17.9°C | Cool / Refreshing (16°C – 20°C) |
| December | 12.8°C | 14.2°C | 15.9°C | Very Cold (< 16°C) |
Swimming FAQs for Ondarreta
Is the sea warm enough to swim in Ondarreta today?
Typical sea surface temperature in Ondarreta 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 Ondarreta?
The highest water temperatures in Ondarreta typically occur duringJune, July, August, September, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Ondarreta in September?
Historically in September, water temperatures in Ondarreta average around21.3°C (70.3°F), fluctuating between a recorded minimum of 19.1°C and a maximum of 23°C.