Treachery Beach Sea Water Temperature
A mild beach on the Tasman Sea, warmest around March at about 24.5°C. Today's reading, 7-day forecast, and monthly averages below.
Treachery Beach water temperature
Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing.
7-Day Water Temperature Forecast
Treachery Beach Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Treachery Beach occurs inJanuary, February, March, April, May, December — peaking at24.5°C (76.1°F) in March.
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 | 21.1°C | 23.7°C | 25.8°C | Comfortable (20°C – 24°C) |
| February | 22.4°C | 24.3°C | 26.6°C | Warm & Ideal (24°C – 28°C) |
| March | 23.2°C | 24.5°C | 26.2°C | Warm & Ideal (24°C – 28°C) |
| April | 22°C | 23.5°C | 25.2°C | Comfortable (20°C – 24°C) |
| May | 19.7°C | 22.2°C | 24.3°C | Comfortable (20°C – 24°C) |
| June | 18.4°C | 20.5°C | 21.9°C | Comfortable (20°C – 24°C) |
| July | 17.9°C | 19.5°C | 20.7°C | Cool / Refreshing (16°C – 20°C) |
| August | 17.7°C | 19°C | 20.2°C | Cool / Refreshing (16°C – 20°C) |
| SeptemberCurrent | 18.1°C | 19.2°C | 20.3°C | Cool / Refreshing (16°C – 20°C) |
| October | 18.6°C | 20.3°C | 22.3°C | Comfortable (20°C – 24°C) |
| November | 19.7°C | 21.2°C | 24.2°C | Comfortable (20°C – 24°C) |
| December | 20.1°C | 22.4°C | 24.4°C | Comfortable (20°C – 24°C) |
Swimming FAQs for Treachery Beach
Is the sea warm enough to swim in Treachery Beach today?
Typical sea surface temperature in Treachery Beach this time of year is 19.2°C (66.6°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 Treachery Beach?
The highest water temperatures in Treachery Beach typically occur duringJanuary, February, March, April, May, December, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Treachery Beach in September?
Historically in September, water temperatures in Treachery Beach average around19.2°C (66.6°F), fluctuating between a recorded minimum of 18.1°C and a maximum of 20.3°C.