Dee Why Beach Sea Water Temperature
A mild beach on the Tasman Sea, warmest around February at about 23.8°C. Today's reading, 7-day forecast, and monthly averages below.
Dee Why Beach water temperature
Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing.
7-Day Water Temperature Forecast
Dee Why Beach Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Dee Why Beach occurs inJanuary, February, March, April — peaking at23.8°C (74.8°F) in February.
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 | 20.9°C | 22.6°C | 25.2°C | Comfortable (20°C – 24°C) |
| February | 22°C | 23.8°C | 26.4°C | Comfortable (20°C – 24°C) |
| March | 22.5°C | 23.7°C | 25.9°C | Comfortable (20°C – 24°C) |
| April | 20.4°C | 22.5°C | 24.3°C | Comfortable (20°C – 24°C) |
| May | 18.7°C | 21.1°C | 23.5°C | Comfortable (20°C – 24°C) |
| June | 17.5°C | 19.8°C | 22.4°C | Cool / Refreshing (16°C – 20°C) |
| July | 16.5°C | 18.8°C | 20.9°C | Cool / Refreshing (16°C – 20°C) |
| August | 15.6°C | 18°C | 19.3°C | Cool / Refreshing (16°C – 20°C) |
| SeptemberCurrent | 17.3°C | 18.4°C | 19.9°C | Cool / Refreshing (16°C – 20°C) |
| October | 18.2°C | 19.4°C | 21°C | Cool / Refreshing (16°C – 20°C) |
| November | 18.8°C | 20.4°C | 22.5°C | Comfortable (20°C – 24°C) |
| December | 19.3°C | 21.6°C | 24.4°C | Comfortable (20°C – 24°C) |
Swimming FAQs for Dee Why Beach
Is the sea warm enough to swim in Dee Why Beach today?
Typical sea surface temperature in Dee Why Beach this time of year is 18.4°C (65.1°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 Dee Why Beach?
The highest water temperatures in Dee Why Beach typically occur duringJanuary, February, March, April, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Dee Why Beach in September?
Historically in September, water temperatures in Dee Why Beach average around18.4°C (65.1°F), fluctuating between a recorded minimum of 17.3°C and a maximum of 19.9°C.