August Weather in Brookhaven, United States

Last updated: June 24, 2025

In August, the climate in Brookhaven, United States is characterized by a warm average temperature of 27°C (80°F). Daytime highs can reach up to 36°C (98°F), while the evenings may cool down to a minimum of 19°C (66°F). This month also brings precipitation, with an average of 169 mm (6.6 in) over approximately 18 days, contributing to a humidity level of 79%.

August Temperature in Brookhaven

In August in Brookhaven, the average temperature is 27°C (80°F). Maximum can reach 36°C (98°F) and minimum can be as low as 19°C (66°F). This makes it an ideal time for travelers looking to enjoy warm weather while having the option for cooler evenings.

August Weather in Brookhaven: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Brookhaven, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brookhaven, August typically has an average temperature of 27°C (80°F), with highs reaching up to 36°C (98°F) and lows dropping to around 19°C (66°F).

Data source: Temperature data for Brookhaven generated using information from the Copernicus Climate Change Service.

August Precipitation in Brookhaven

In Brookhaven in August, the total precipitation amount is 169 mm (6.6 in) spread over 18 days.

August Precipitation Trends in Brookhaven

The chart displays monthly precipitation patterns in Brookhaven, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Brookhaven, August typically receives around 169 mm (6.6 inches) of precipitation spread over approximately 18 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Brookhaven

In Brookhaven in August humidity is 79%. With an average temperature of 27°C (80°F), this humidity feels like walking through a warm, dense blanket, making travel feel sluggish and allowing every step to become noticeably heavier.

August Average Humidity in Brookhaven

This chart illustrates the average monthly humidity levels in Brookhaven, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Brookhaven is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Brookhaven

In Brookhaven in August, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Brookhaven.

Maximum UV Index Levels in Brookhaven for August

The chart shows the monthly maximum UV Index (UVI) for Brookhaven in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Brookhaven typically reaches 11, which falls under the extreme exposure category.

Data source: Brookhaven August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How August Weather in Brookhaven Compares to Other Months

Weather in Brookhaven varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Brookhaven, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Brookhaven, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	120 mm (4.7 inches)	83%	moderate
February Weather	13°C (55°F)	129 mm (5.1 inches)	83%	very high
March Weather	16°C (62°F)	120 mm (4.7 inches)	80%	very high
April Weather	18°C (65°F)	163 mm (6.4 inches)	81%	extreme
May Weather	23°C (74°F)	175 mm (6.9 inches)	81%	extreme
June Weather	26°C (79°F)	149 mm (5.8 inches)	78%	extreme
July Weather	27°C (81°F)	131 mm (5.1 inches)	79%	extreme
August Weather	27°C (80°F)	169 mm (6.6 inches)	79%	extreme
September Weather	26°C (78°F)	110 mm (4.3 inches)	79%	very high
October Weather	21°C (70°F)	104 mm (4.1 inches)	77%	very high
November Weather	14°C (57°F)	85 mm (3.4 inches)	85%	high
December Weather	12°C (53°F)	139 mm (5.5 inches)	88%	moderate