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Weather · September
Brookhaven weather in September
Average highs of 74°F, lows of 57°F and 3.9 in of rain, from 30 years of weather records.
September is Brookhaven’s 4th warmest month, with average highs of 74°F and lows of 57°F. That is 7° cooler than August, and 14° above the yearly average high.
- Average high
- 74°F
- Average low
- 57°F
- Precipitation
- 3.9 in
- Wet days
- 11
- Sunrise · sunset
- 6:31 AM · 7:02 PM
September across the year
High and low Rain
What to wear in September
- Mild days: dress in layers, with a light jacket or sweater for mornings and evenings.
- Pack an umbrella or rain jacket: rain or snow falls on about 11 days this month.
September is good for
What’s on in Brookhaven in September
See all upcoming events and school days off.
Around Brookhaven
See Brookhaven
A look around town before you go.
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Watch on YouTube ↗September compared with the months around it
Planning a trip? See the best time to visit Brookhaven and today’s forecast.
Questions
How hot does it get in Brookhaven in September?
Average highs are 74°F and average lows 57°F, for a daily mean of 66°F. Individual days run hotter or colder than these 30-year averages.
Does it rain in Brookhaven in September?
September averages 3.9 in of precipitation over about 11 days with at least 0.01 in. It is the 5th wettest month of the year.
What time is sunset in Brookhaven in September?
Around mid-September the sun rises about 6:31 AM and sets about 7:02 PM, for roughly 12.5 hours of daylight.
Is September a good time to visit Brookhaven?
The mildest months for visiting are May, July, August. September is mild, with Halloween events.
NOAA U.S. Climate Normals 1991–2020, Shirley Brookhaven Ap station (3.7 mi from downtown). Sunrise and sunset are calculated for September 15 at the city’s coordinates.