Brenham, United States experiences average highs of 26°C (79°F) and lows of 17°C (63°F) throughout the year. Rainfall is moderate, averaging about 9 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have warmed by 1.3°C (2.3°F) across the available records.
Brenham, United States Weather & Climate 2026
Monthly climate averages for Brenham, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Apr–Aug At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.4/10
Best: March, April, October, November
UV Index
6
High
Temperature 26°C / 17°C
Feels Like 28°C / 17°C
Rainy Days 9
Rainfall 91 mm
Sunshine 9 h
Humidity 71%
Wind Speed 20 km/h
Dew Point 16°C
Frost Days 2 days
Hottest Month
35°C
August
Avg Low25°C
Rain10days
Coldest Month
7°C
January
Avg High17°C
Rain9days
Driest Month
7days
October
Avg High28°C
Avg Low18°C
Windiest Month
23 km/h
April (Gusts 44)
Worst Time to Visit
Consider avoiding July, August due to extreme heat, oppressive humidity.
Sun Position
Sunrise 06:25
Daylight 14.1h
Sunset 20:30
Live conditions—
Brenham on the map · live conditions
Brenham, United States
- Continent
- Americas
- Country
- United States
- City
- Brenham
- Population
- 16.6K
- Elevation
- 104 m
- Coordinates
- 30.17°, -96.40°
Seasonal Breakdown
Spring
Mar–May
Avg High 26°C
Avg Low 17°C
Rain 11 days/mo
2/3 best months
Summer
Jun–Aug
Avg High 34°C
Avg Low 25°C
Rain 10 days/mo
Autumn
Sep–Nov
Avg High 28°C
Avg Low 18°C
Rain 8 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 18°C
Avg Low 9°C
Rain 8 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: 17°C / 7°C . Feb: 19°C / 9°C . Mar: 23°C / 14°C . Apr: 26°C / 16°C . May: 30°C / 21°C . Jun: 33°C / 24°C . Jul: 34°C / 25°C . Aug: 35°C / 25°C . Sep: 32°C / 23°C . Oct: 28°C / 18°C . Nov: 22°C / 13°C . Dec: 19°C / 10°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 86 mm. Feb: 71 mm. Mar: 76 mm. Apr: 112 mm. May: 169 mm. Jun: 99 mm. Jul: 75 mm. Aug: 96 mm. Sep: 74 mm. Oct: 68 mm. Nov: 78 mm. Dec: 89 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 70%. Feb: 74%. Mar: 72%. Apr: 71%. May: 75%. Jun: 73%. Jul: 70%. Aug: 68%. Sep: 69%. Oct: 65%. Nov: 71%. Dec: 73%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 21 km/h . Feb: 22 km/h . Mar: 23 km/h . Apr: 23 km/h . May: 20 km/h . Jun: 18 km/h . Jul: 18 km/h . Aug: 18 km/h . Sep: 16 km/h . Oct: 18 km/h . Nov: 19 km/h . Dec: 20 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 6h. Mar: 8h. Apr: 9h. May: 10h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 10h. Oct: 9h. Nov: 8h. Dec: 7h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 5. Mar: UV 6. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 7. Oct: UV 6. Nov: UV 4. Dec: UV 4.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have warmed by 1.3°C (2.3°F) across the available records. Average rainfall is trending drier by about 20 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 35°C | Aug · 35°C |
| Coldest month | Jan 2025 · 5°C | Jan · 7°C |
| Wettest month | Jun 2025 · 166 mm | May · 169 mm |
| Windiest month | Mar 2025 · 25 km/h | Apr · 23 km/h |
Month-by-Month Weather Table
January
Fair 
February
Good March best
Excellent April best
Excellent May
Good June
Fair July
Poor August
Poor September
Fair October best
Excellent November best
Excellent December
Good | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 17°C / 7°C | 15°C / 4°C | 9days (86 mm) Wet | 6.8h Fair | 70% Muggy | 3.6 Moderate | Fair | View Details |
| February | 19°C / 9°C | 18°C / 6°C | 8days (71 mm) Wet | 6.4h Fair | 74% Muggy | 4.6 Moderate | Good | View Details |
| March best | 23°C / 14°C | 23°C / 12°C | 9days (76 mm) Wet | 8h Good | 72% Muggy | 6.2 High | Excellent | View Details |
| April best | 26°C / 16°C | 27°C / 15°C | 10days (112 mm) Wet | 9.1h Good | 71% Muggy | 7 High | Excellent | View Details |
| May | 30°C / 21°C | 32°C / 22°C | 13days (169 mm) Wet | 10.1h Excellent | 75% Muggy | 7.7 Very High | Good | View Details |
| June | 33°C / 24°C | 37°C / 27°C | 10days (99 mm) Wet | 11.7h Excellent | 73% Muggy | 8 Very High | Fair | View Details |
| July | 34°C / 25°C | 38°C / 29°C | 9days (75 mm) Wet | 11.9h Excellent | 70% Muggy | 7.9 Very High | Poor | View Details |
| August | 35°C / 25°C | 39°C / 30°C | 10days (96 mm) Wet | 11.3h Excellent | 68% Muggy | 7.9 Very High | Poor | View Details |
| September | 32°C / 23°C | 35°C / 26°C | 8days (74 mm) Wet | 10.1h Excellent | 69% Muggy | 7.1 Very High | Fair | View Details |
| October best | 28°C / 18°C | 29°C / 18°C | 7days (68 mm) Good | 9.1h Good | 65% Muggy | 5.7 High | Excellent | View Details |
| November best | 22°C / 13°C | 22°C / 11°C | 8days (78 mm) Wet | 7.6h Good | 71% Muggy | 4.3 Moderate | Excellent | View Details |
| December | 19°C / 10°C | 18°C / 7°C | 8days (89 mm) Wet | 6.6h Fair | 73% Muggy | 3.5 Moderate | Good | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Brenham are March, April, October, November, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Brenham, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Brenham is August, with average daytime highs of 35°C (94°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Brenham is January, with average overnight lows of 7°C (45°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Brenham is May, averaging 169mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Brenham runs through May, April, June, August, with the heaviest rainfall in May. Based on 10-year averages for Brenham.
Brenham receives approximately 109 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Brenham.
The least favorable months to visit Brenham are July, August, primarily due to extreme heat, oppressive humidity. For the best conditions, consider March, April, October, November instead.
The annual average UV index in Brenham is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Brenham is 71%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Brenham rarely sees significant snowfall but does experience frost, averaging 2 frost days during the colder months.
Average wind speeds in Brenham are 20 km/h (12 mph). The windiest month is April with peak winds reaching 23 km/h (14 mph) (gusts up to 44 km/h / 27 mph).
Brenham averages 6 clear-sky days per month with overall cloud cover around 55%. The clearest skies occur in October.
The annual average dew point in Brenham is 16°C (61°F), which feels noticeably humid. Summer months may feel slightly sticky, but conditions remain manageable for most people.
Brenham 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 Brenham ranges from 17°C (63°F) to 28°C (82°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
June is not the best time to visit Brenham, with a climate score of 5.2/10. Consider visiting during March, April, October, November instead for better conditions.
For June in Brenham, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 33°C (91°F) and 10 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.
Last updated: