March Weather in Brookhaven, United States

Last updated: June 24, 2025

In March, the average temperature in Brookhaven, United States hovers around 16°C (62°F), making it a mild time of year. However, temperatures can swing from a chilly -3°C (27°F) to a warm 31°C (87°F). Expect approximately 120 mm (4.7 in) of precipitation over 11 days, accompanied by an average humidity of 80%, adding a touch of moisture to the air.

March Temperature in Brookhaven

In March in Brookhaven, the average temperature is 16°C (62°F), with maximums that can reach 31°C (87°F) and minimums dropping as low as -3°C (27°F). Therefore, it’s essential to pack a variety of clothing to stay comfortable throughout your travels.

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

The chart illustrates March 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, March typically has an average temperature of 16°C (62°F), with highs reaching up to 31°C (87°F) and lows dropping to around -3°C (27°F).

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

March Precipitation in Brookhaven

In Brookhaven in March, the precipitation amount is 120 mm (4.7 in) during a span of 11 days.

March Precipitation Trends in Brookhaven

The chart displays monthly precipitation patterns in Brookhaven, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Brookhaven, March typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Brookhaven

In Brookhaven in March humidity is 80%. With an average temperature of 16°C (62°F), this humidity feels like a warm, muggy embrace, making travel slightly uncomfortable as the air hangs heavy, necessitating frequent hydration and light clothing to stay cool and refreshed.

March Average Humidity in Brookhaven

This chart illustrates the average monthly humidity levels in Brookhaven, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Brookhaven is approximately 80%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Brookhaven

In Brookhaven in March, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Brookhaven.

Maximum UV Index Levels in Brookhaven for March

The chart shows the monthly maximum UV Index (UVI) for Brookhaven in March, 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 March, the maximum UV index in Brookhaven typically reaches 9, which falls under the very high exposure category.

Data source: Brookhaven March 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 March 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 March’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 March’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