Brenham weather in May

In May, Brenham sees average daytime highs of 86°F and overnight lows near 67°F, with 4.1 in of rain across 9.7 wet days and about 13.5 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 83°F in the first days to 89°F by the end. The sky is clear or mostly clear about 34% of the time in May, and the air most often feels muggy.

Daylight stretches from about 13 h 12 min at the start of May to 13 h 48 min by month's end. Set against the rest of the year, May is Brenham's 8th-clearest and 4th-windiest month. For the whole year in context, see Brenham's year-round climate.

Daytime high
86°
5th warmest
Overnight low
67°
8th coldest
Rainfall
4.1 in
9.7 wet days
Daylight
13 h 30 min
5:36 AM – 7:07 PM
Cloud cover
55%
8th clearest
Wind
9 mph
4th windiest
Solar energy
5.8 kWh/m²
Travel score
5.2
out of 10

Brenham is city and county seat of Washington County, Texas, United States.

Density
497/km²
people per km²
Founded
1844

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 83°F in the first days to 89°F by the end.

A typical May day in Brenham reaches about 86°F in the afternoon and slips back to 67°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 79°F and 92°F. Set against its neighbours, May runs about 7°F warmer than April and about 5°F cooler than June.

60°80°100°151015202531
Avg high (°F)Avg low (°F)
18263
28264
38364
48364
58364
68365
78465
88465
98466
108466
118466
128567
138567
148567
158567
168567
178668
188668
198668
208669
218769
228769
238769
248770
258870
268870
278871
288871
298971
308971
318971

How May really feels in Brenham

Once humidity and wind are folded in, May averages 10 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
10
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Brenham weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan62° / 43°3.28.610.35.4
Feb65° / 46°2.78.410.96.1
Mar72° / 53°3.28.511.86.9
Apr78° / 59°3.4812.77.0
May86° / 67°4.19.713.55.2
Jun91° / 74°3.31013.93.7
Jul94° / 76°1.97.313.73.0
Aug95° / 76°2.77.513.12.7
Sep90° / 71°3.18.412.24.3
Oct81° / 61°3.67.211.36.9
Nov71° / 51°3.37.910.57.1
Dec63° / 45°3.68.710.15.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 21% of May, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25248
35248
45347
55248
65248
75248
85248
95149
105248
115347
125347
135347
145347
155446
165446
175545
185545
195545
205644
215644
225644
235743
245842
255842
265941
276040
286040
296139
306139
316238

Chance of precipitation in May

Any precipitation

Brenham gets around 4.1 in of rain over 9.7 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 31% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
228
329
429
530
630
730
831
931
1031
1131
1231
1331
1431
1531
1631
1731
1831
1931
2031
2131
2231
2332
2432
2532
2632
2732
2832
2932
3032
3132

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the muggy band about 42% of days. Sticky, muggy-or-worse air turns up on roughly 66% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
124131932120
223131932130
322121933140
421121834150
520111835160
619111836160
717111836170
816111837180
915101838180
1014101839180
1113101839191
1212101840191
1311101841191
141091842201
151091843201
16981844211
17881744211
18871745221
19771646231
20661647241
21661547251
22551548271
23551448281
24441348291
25341348311
26341248331
27231247351
28231147371
29231145381
30131045401
31121043421

Wind in May

Winds average 9 mph in May.

Across May, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 12 min at the start of May to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over May. Sunrise moves from 5:48 AM to 5:29 AM, and sunset from 6:57 PM to 7:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:486:57
213.25:476:58
313.25:466:59
413.25:456:59
513.35:457:00
613.35:447:01
713.35:437:01
813.35:427:02
913.45:417:03
1013.45:417:03
1113.45:407:04
1213.45:397:05
1313.45:387:05
1413.55:387:06
1513.55:377:07
1613.55:367:07
1713.55:367:08
1813.65:357:09
1913.65:357:09
2013.65:347:10
2113.65:347:10
2213.65:337:11
2313.75:337:12
2413.75:327:12
2513.75:327:13
2613.75:317:14
2713.75:317:14
2813.75:307:15
2913.85:307:15
3013.85:307:16
3113.85:297:16

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.8 kWh/m².

For context, solar energy here swings from a low near 2.61 kWh/m² to a high of 6.52 kWh/m² in July across the year — May's 5.8 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
236.0Bright
246.0Bright
256.0Bright
266.0Intense
276.0Intense
286.0Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in May

Is May a good time to visit Brenham?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.2
Sightseeing
8th-best month of the year
6.9
Beach & pool
2nd-best month of the year

May is a reasonable time to visit Brenham for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Brenham in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Brenham sees daytime highs around 86°F and nights near 67°F. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Brenham in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Brenham peaks around July 24 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 24UV 11Dec 21UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7High
Apr10Very high
May10Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Brenham in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Brenham is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1419 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar10Good
Apr11Good
May15Moderate
Jun16Moderate
Jul19Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Brenham?

Brenham sits at 30.2°N, 96.4°W, 341 ft above sea level, in United States. The nearest listed city is College Station, 32 mi away.

Topography around Brenham

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Brenham.

Within 2 miles, the terrain around Brenham has only modest variations in elevation — a maximum elevation change of 210 ft around an average of 325 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 361 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 682 ft.

The land around Brenham is covered by grassland (42%), trees (33%) and artificial surfaces (22%) within 2 miles, grassland (74%) and trees (23%) within 10 miles, and grassland (54%) and trees (37%) within 50 miles.

2 miles
210 ft
10 miles
361 ft
50 miles
682 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: College Station 32 mi · Bryan 35 mi · Katy 43 mi · Cypress 44 mi · Cinco Ranch 48 mi · The Woodlands 54 mi · Pecan Grove 55 mi · Mission Bend 55 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Brenham (30.1669°, -96.3977°, elevation 341 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).