Brookhaven, United States experiences average highs of 22°C (72°F) and lows of 13°C (55°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have cooled by 1.0°C (1.8°F) across the available records.
Brookhaven, United States Weather & Climate 2026
Monthly climate averages for Brookhaven, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Feb–Aug At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.5/10
Best: April, May, September, October
UV Index
6
High
Temperature 22°C / 13°C
Feels Like 22°C / 12°C
Rainy Days 11
Rainfall 107 mm
Sunshine 9 h
Humidity 72%
Wind Speed 16 km/h
Dew Point 12°C
Snow Days 1 days
Frost Days 5 days
Hottest Month
31°C
July
Avg Low22°C
Rain17days
Coldest Month
2°C
January
Avg High11°C
Rain10days
Driest Month
6days
October
Avg High23°C
Avg Low14°C
Windiest Month
19 km/h
March (Gusts 41)
Worst Time to Visit
Consider avoiding January, February, July, August due to frequent rain.
Sun Position
Sunrise 06:27
Daylight 14.4h
Sunset 20:51
Live conditions—
Brookhaven on the map · live conditions
Brookhaven, United States
- Continent
- Americas
- Country
- United States
- City
- Brookhaven
- Population
- 51.9K
- Elevation
- 298 m
- Coordinates
- 33.86°, -84.34°
Seasonal Breakdown
Spring
Mar–May
Avg High 22°C
Avg Low 12°C
Rain 11 days/mo
2/3 best months
Summer
Jun–Aug
Avg High 30°C
Avg Low 21°C
Rain 15 days/mo
Autumn
Sep–Nov
Avg High 23°C
Avg Low 13°C
Rain 7 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 13°C
Avg Low 4°C
Rain 10 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 11°C / 2°C . Feb: 15°C / 6°C . Mar: 18°C / 8°C . Apr: 22°C / 11°C . May: 26°C / 16°C . Jun: 29°C / 20°C . Jul: 31°C / 22°C . Aug: 30°C / 22°C . Sep: 28°C / 19°C . Oct: 23°C / 14°C . Nov: 17°C / 8°C . Dec: 13°C / 5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 123 mm. Feb: 121 mm. Mar: 129 mm. Apr: 103 mm. May: 98 mm. Jun: 105 mm. Jul: 118 mm. Aug: 125 mm. Sep: 93 mm. Oct: 75 mm. Nov: 77 mm. Dec: 118 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 71%. Feb: 74%. Mar: 69%. Apr: 69%. May: 72%. Jun: 73%. Jul: 76%. Aug: 78%. Sep: 71%. Oct: 70%. Nov: 70%. Dec: 75%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 19 km/h . Feb: 19 km/h . Mar: 19 km/h . Apr: 18 km/h . May: 16 km/h . Jun: 14 km/h . Jul: 12 km/h . Aug: 12 km/h . Sep: 13 km/h . Oct: 15 km/h . Nov: 17 km/h . Dec: 18 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 7h. Mar: 8h. Apr: 10h. May: 11h. Jun: 11h. Jul: 12h. Aug: 11h. Sep: 10h. Oct: 9h. Nov: 7h. Dec: 6h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 6. Apr: UV 7. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 7. Oct: UV 5. Nov: UV 4. Dec: UV 3.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 1 days. Feb: 0 days. Mar: 0 days. Apr: 0 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 0 days. Dec: 0 days.
Climate Trends
Average highs have cooled by 1.0°C (1.8°F) across the available records. Average rainfall is trending wetter by about 19 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 32°C | Jul · 31°C |
| Coldest month | Jan 2025 · -1°C | Jan · 2°C |
| Wettest month | May 2025 · 177 mm | Mar · 129 mm |
| Windiest month | Mar 2025 · 21 km/h | Mar · 19 km/h |
Month-by-Month Weather Table
January
Poor 
February
Fair March
Good April best
Excellent May best
Excellent June
Good July
Poor August
Fair September best
Excellent October best
Excellent November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 11°C / 2°C | 8°C / -1°C | 10days (123 mm) Wet | 6.5h Fair | 71% Muggy | 3.4 Moderate | Poor | View Details |
| February | 15°C / 6°C | 13°C / 3°C | 11days (121 mm) Wet | 6.6h Fair | 74% Muggy | 4.4 Moderate | Fair | View Details |
| March | 18°C / 8°C | 17°C / 5°C | 12days (129 mm) Wet | 8.2h Good | 69% Muggy | 5.7 High | Good | View Details |
| April best | 22°C / 11°C | 22°C / 9°C | 9days (103 mm) Wet | 10h Excellent | 69% Muggy | 7 High | Excellent | View Details |
| May best | 26°C / 16°C | 27°C / 16°C | 11days (98 mm) Wet | 10.5h Excellent | 72% Muggy | 7.3 Very High | Excellent | View Details |
| June | 29°C / 20°C | 33°C / 22°C | 14days (105 mm) Wet | 11.4h Excellent | 73% Muggy | 8.1 Very High | Good | View Details |
| July | 31°C / 22°C | 36°C / 26°C | 17days (118 mm) Wet | 11.7h Excellent | 76% Humid | 8.1 Very High | Poor | View Details |
| August | 30°C / 22°C | 34°C / 25°C | 15days (125 mm) Wet | 10.6h Excellent | 78% Humid | 7.6 Very High | Fair | View Details |
| September best | 28°C / 19°C | 30°C / 20°C | 8days (93 mm) Wet | 9.8h Good | 71% Muggy | 6.6 High | Excellent | View Details |
| October best | 23°C / 14°C | 23°C / 13°C | 6days (75 mm) Good | 8.6h Good | 70% Muggy | 5.3 High | Excellent | View Details |
| November | 17°C / 8°C | 15°C / 5°C | 7days (77 mm) Good | 7.4h Good | 70% Muggy | 3.9 Moderate | Good | View Details |
| December | 13°C / 5°C | 10°C / 1°C | 10days (118 mm) Wet | 5.9h Fair | 75% Muggy | 3.1 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Brookhaven are April, May, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Brookhaven, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Brookhaven is July, with average daytime highs of 31°C (88°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Brookhaven is January, with average overnight lows of 2°C (36°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Brookhaven is March, averaging 129mm of precipitation across 12 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Brookhaven runs through July, August, June, March, with the heaviest rainfall in July. Based on 10-year averages for Brookhaven.
Brookhaven receives approximately 107 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Brookhaven.
The least favorable months to visit Brookhaven are January, February, July, August, primarily due to frequent rain. For the best conditions, consider April, May, September, October instead.
The annual average UV index in Brookhaven is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Brookhaven is 72%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Brookhaven receives snow. Months with snowfall average 1 snow days and 2 cm (1 in) of accumulation, with about 5 frost days during winter.
Average wind speeds in Brookhaven are 16 km/h (10 mph). The windiest month is March with peak winds reaching 19 km/h (12 mph) (gusts up to 41 km/h / 25 mph).
Brookhaven averages 6 clear-sky days per month with overall cloud cover around 56%. The clearest skies occur in October.
The annual average dew point in Brookhaven is 12°C (54°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Brookhaven has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Brookhaven ranges from 12°C (54°F) to 22°C (72°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Brookhaven. It earns a climate score of 7/10 with Good.
For June in Brookhaven, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 29°C (85°F) and 14 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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