# Heron Island water temperature

Sea temperature at Heron Island is 22.5 °C (72.5 °F).

- Location: Heron Island, Australia
- Timezone: Australia/Brisbane
- Source: Open-Meteo marine forecast (snapshot)
- Generated at: 2026-09-23T10:41:02.738584+10:00
- Forecast page: https://snorkelforecast.com/australia/heron-island/
- HTML sea temperature: https://snorkelforecast.com/australia/heron-island/sea-temperature/
- Temperature is not a safety rating or snorkel score.
- Guidance: Mild water
- What to wear: A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.

## Monthly baseline

- January: 27.9 °C (82.2 °F)
- February: 28.0 °C (82.4 °F)
- March: 27.5 °C (81.5 °F)
- April: 26.1 °C (79.0 °F)
- May: 23.7 °C (74.7 °F)
- June: 22.2 °C (72.0 °F)
- July: 21.1 °C (70.0 °F)
- August: 21.6 °C (70.9 °F)
- September: 22.4 °C (72.3 °F)
- October: 24.1 °C (75.4 °F)
- November: 25.8 °C (78.4 °F)
- December: 27.3 °C (81.1 °F)