Climate Insights for Brookhaven

The climate in Brookhaven is warm and mild. The average annual temperature is 20°C and approximately 1415mm of precipitation falls per year. Brookhaven receives a notable amount of rainfall throughout the year, including during its driest month. Brookhaven is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: Agosto, Luglio, Giugno. The coldest months are Gennaio, Febbraio, Dicembre, when temperatures can drop to 5°C.

Temperatures in Brookhaven vary considerably across the year, with a 28°C difference between the coldest and warmest months. The warmest month is Agosto, when average highs reach 33°C and the mean temperature sits around 27°C. Gennaio is the coolest month, with minimum temperatures around 5°C and an average of 10°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.

Brookhaven is a fairly wet location, receiving approximately 1415mm of precipitation annually, which averages out to around 118mm per month. The wettest month is April, averaging 144mm of rainfall. August and December also tend to see above-average precipitation. The driest month is October, with just 75mm. That's 69mm less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.

Brookhaven is mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 17km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 16km/h in winter, 15km/h in spring, 12km/h in summer, 13km/h in autumn.

It is currently spring in Brookhaven, which began on March 20, 2026. Brookhaven is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in Agosto at around 33°C, while the coldest stretch bottoms out in Gennaio near 5°C. Summer is next, beginning on June 21, 2026 — 93 days from now.

The best time to visit Brookhaven is during Ottobre, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 75mm per month. By contrast, Agosto can be uncomfortably hot with highs reaching 33°C, while Gennaio is the coldest period with lows dropping to 5°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Brookhaven 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.