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Can you swim at Collaroy Beach today?

8.5GLASS

Glass · 8.5

Water is 18.4 °C, a modelled sea-surface estimate. Rough waves around 1.5 m, light wind at 18 km/h.

Updated

Swim brief

Conditions look excellent right now: 8.5 out of 10. Water is 18.4 °C, a modelled sea-surface estimate. Rough waves around 1.5 m, light wind at 18 km/h. Air 18 °C, UV 4 (moderate). Best window in the next 24 hours: 5 pm to 8 pm, averaging 8.7.

Written from the readings below. Not a safety guarantee: follow lifeguards and posted signs.

The readings

  • Water temperature
    18.4 °C
    Open-Meteo Marine (model) · fetched
    Good
  • Water quality
    No reading
    No classification for this spot
    –
  • Waves
    1.5 m
    Open-Meteo Marine (model) · fetched
    Good
  • Wind
    18 km/h
    Open-Meteo Forecast (model) · fetched
    Glass
  • Air temperature
    18 °C
    Open-Meteo Forecast (model) · fetched
    Good
  • UV index
    UV 4 · moderate
    Open-Meteo Forecast (model) · fetched
    Good
  • Thunderstorms
    No reading
    No source reported a value
    –
  • Weather alerts
    No reading
    Weather provider does not report alerts
    Glass

Today

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Questions about Collaroy Beach

Is it safe to swim at Collaroy Beach today?

Swimmable can't tell you a spot is safe; conditions change fast and no score is a guarantee. Right now its Swim Score is 8.5 out of 10 (Glass), summarised from public weather, marine and water data. Check whether lifeguards are on duty and follow posted signs and flags.

What is the water temperature at Collaroy Beach?

The latest reading is 18.4 °C (a modelled sea-surface estimate, not a thermometer reading). The page shows its source and when it was fetched.

How is the Swim Score calculated?

The score out of 10 combines water temperature, air temperature, UV, wind and weather, waves and weather alerts from public sources such as NOAA, NDBC and Open-Meteo. Missing readings are left out and shown as missing, never guessed.