Climate Insights for Mona Vale

The climate in Mona Vale is hot. The average annual temperature is 25°C and approximately 117mm of precipitation falls per year. February is the wettest month, receiving around 33mm of rainfall. Mona Vale is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: May, April, March. The coldest months are February, January, June, when temperatures can drop to 17°C.

Mona Vale sees moderate temperature variation throughout the year, ranging from 17°C to 35°C. The warmest month is May, when average highs reach 35°C and the mean temperature sits around 29°C. February is the coolest month, with minimum temperatures around 17°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between February and March, with a 6°C shift in average temperatures.

Mona Vale is a quite dry location, receiving approximately 117mm of precipitation annually, which averages out to around 10mm per month. The wettest month is February, averaging 33mm of rainfall. March and June also tend to see above-average precipitation. The driest month is May, with just 0mm. That's 33mm less than February, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Mona Vale is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 6km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently winter in Mona Vale, which began on June 21, 2026. Mona Vale is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in May at around 35°C, while the coldest stretch bottoms out in February near 17°C. Spring is next, beginning on September 23, 2026 — 18 days from now.

The best time to visit Mona Vale is during January, February, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 12mm per month. By contrast, May can be uncomfortably hot with temperatures reaching 35°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Mona Vale based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.