Hawkesbury River - Olga Bay Weather Forecast
- 14
- 21
Rain
- 14
- 20
Rain
- 12
- 19
Mostly sunny
- 11
- 19
Shower or two
- 12
- 20
Showers
- 14
- 21
Showers
- 13
- 22
Shower or two
Today 18 May Central Coast
Cloudy. Very high chance of rain. Light winds.
Sydney Enclosed Waters
Sydney Harbour, Pittwater and Botany Bay- Wind
- Northwesterly about 10 knots.
- Seas
- Below 0.5 metres.
- Weather
- Cloudy. 90% chance of rain.
- Weather Situation
- A trough in the state's west is heading eastwards and forecast to cross Sydney Waters on Tuesday morning. A low pressure system is forecast to form withing the trough as the system enters the Tasman Sea. The low will then remain over the Tasman Sea while whipping fresh to strong southerly winds and large powerful swells to the coastline mid to late this week.
Hawkesbury River - Olga Bay Temperature Statistics View More
May Temperature
Terrey Hills (17km)
Lowest 8 May, 2026
6.5 °CAverage May
16.2 °CHighest 3 May, 2026
23.7 °C
Climate (2021–Present)
Terrey Hills (17km)
Average Low 2021–2026
13.4 °CAverage 2021–2026
17 °CAverage High 2021–2026
21.9 °C