Brownsville, TX weather in August
August in Brownsville: hot and oppressively humid, with some rain. Highs 96°F, lows 78°F, rain on about 6 days. This is the peak of the warm season in Brownsville. Midday heat is the main thing to plan around.
- Normal high
- 96°F
- Normal low
- 78°F
- Wet days
- 6
- 2.2 in total
- Muggy days
- 31
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 96°F | 95°F |
| Normal low | 78°F | 77°F |
| Chance of a wet day | 16% | 29% |
| Sunrise / sunset | 6:56 am / 8:16 pm | 7:09 am / 7:50 pm |
| Daylight | 13.3 h | 12.7 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical August day
- 6 am78°Fdew point 75°F
- 9 am87°Fdew point 75°F
- Noon92°Fdew point 73°F
- 3 pm92°Fdew point 73°F
- 6 pm87°Fdew point 74°F
- 9 pm82°Fdew point 76°F
NOAA hourly normals (local standard time) from Brownsville (5 mi away); average wind 9 mph; clear or few clouds in 75% of daytime hours, mostly cloudy or overcast in 11%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Hot dayshigh 90°F or more30 of 31
- Muggy daysdaily mean dew point 65°F or more31 of 31
- Wet daysat least 0.01 in of rain or melted snow6 of 31
- Notable rainat least 0.10 in4 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 2.2 in; a dry August brings about 0.9 in and a wet one about 2.9 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202019: average high 98°F
- Coolest August1995: average high 91°F
- Wettest August1995: 8.3 in
- Driest August1993: 0.04 in
- Highest reading105°F (August 30, 2012)
- Lowest reading68°F (August 29, 2015)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 95°F | 96°F | 92°F |
| Normal low | 78°F | 78°F | 75°F |
| Wet days | 5 | 6 | 11 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 13.6 h | 13.0 h | 12.3 h |
Highs change by +1°F from July and -4°F into September.
Nearby alternatives in August
- Cooler: South Padre Island, TX25 mi · high 90°F · 6 wet days
How Brownsville ranks in August
- Normal high38th warmest of 378 cities; 15th of 38 in Texas
- Wet days122nd driest of 378
- Comfortable days317th most of 341
What to pack for Brownsville in August
- Light, breathable clothing – highs near 96°F and about 31 muggy days
Heating and cooling
August has 0 heating degree days and 683 cooling degree days (base 65°F), 14% of the year's total heating and cooling demand.
Questions
How hot is Brownsville in August?
The normal high is 96°F and the normal low is 78°F. From 1991 to 2020 the hottest August reading was 105°F (August 30, 2012).
Does it rain a lot in Brownsville in August?
About 6 days in August have at least 0.01 in of precipitation, and the normal total is 2.2 in. The wettest August in 1991-2020 was in 1995 (8.3 in); the driest was in 1993 (0.04 in).
Is August a good time to visit Brownsville?
August ranks 11th of 12 months on our comfort score for Brownsville (33 out of 100). It has almost no comfortable days and about 30 days at 90°F or hotter. The best months are January, February and December.
Where the numbers come from
- Temperature, rain, frost dates and humidity and wind by hour: Brownsville (USW00012919), 5.0 mi E of the city center, 23 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Port Isabel (USC00417179), 18 mi NE of the city center, 17 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Mcallen Miller Intl Airport (USW00012959), 51 mi WNW of the city center, 100 ft (65 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Brownsville/S Padre Island Intl Airport (722500-12919), 4.7 mi E of the city center, 19 ft . Hourly observations, 1991-2020.