Galveston weather in August: Galveston, Texas: normal highs, lows, rain and records for August
Galveston in August has a normal high of 92°F and a normal low of 80°F, a daily mean of 86°F, holding near 92°F all month. Measurable precipitation falls on 8 days in a normal August, 4.71 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 33°C and low of 27°C, 120 mm of precipitation in August.
- NOAA stationGalveston Scholes Field
- Station IDUSW00012923
- Location29.27°N 94.86°W
- Elevation5 ft (2 m)
- Population53,538
- Jan 63° 49°
- Feb 66° 52°
- Mar 72° 58°
- Apr 78° 65°
- May 84° 72°
- Jun 90° 78°
- Jul 91° 80°
- Aug 92° 80°
- Sep 89° 76°
- Oct 82° 69°
- Nov 72° 59°
- Dec 66° 52°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Galveston in August?
The normal high is 92°F and the normal low 80°F, for a daily mean of 85.9°F. August is 0.4°F warmer than July and 3.5°F warmer than September. August is the warmest month of the year in Galveston and the 3rd wettest. Across the month the normal high falls 1°F, from 92°F on August 1 to 91°F on August 31. From one year to the next August's mean temperature typically moves about 1.3°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 85°F and 87°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 92°F | 80°F | 25% | 15% |
| August 8 | 92°F | 80°F | 25% | 15% |
| August 15 | 92°F | 80°F | 27% | 17% |
| August 22 | 92°F | 80°F | 30% | 20% |
| August 31 | 91°F | 79°F | 33% | 23% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 7, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 92°F | 80°F | 25% | 15% | 13 h 30 min |
| August 2 | 92°F | 80°F | 25% | 15% | 13 h 30 min |
| August 3 | 92°F | 80°F | 25% | 15% | 13 h 30 min |
| August 4 | 92°F | 80°F | 25% | 15% | 13 h 30 min |
| August 5 | 92°F | 80°F | 25% | 15% | 13 h 30 min |
| August 6 | 92°F | 80°F | 25% | 15% | 13 h 30 min |
| August 7 | 92°F | 80°F | 25% | 15% | 13 h 30 min |
| August 8 | 92°F | 80°F | 25% | 15% | 13 h 20 min |
| August 9 | 92°F | 80°F | 25% | 15% | 13 h 20 min |
| August 10 | 92°F | 80°F | 26% | 16% | 13 h 20 min |
| August 11 | 92°F | 80°F | 26% | 16% | 13 h 20 min |
| August 12 | 92°F | 80°F | 26% | 16% | 13 h 20 min |
| August 13 | 92°F | 80°F | 26% | 16% | 13 h 20 min |
| August 14 | 92°F | 80°F | 27% | 17% | 13 h 20 min |
| August 15 | 92°F | 80°F | 27% | 17% | 13 h 10 min |
| August 16 | 92°F | 80°F | 27% | 17% | 13 h 10 min |
| August 17 | 92°F | 80°F | 28% | 18% | 13 h 10 min |
| August 18 | 92°F | 80°F | 28% | 18% | 13 h 10 min |
| August 19 | 92°F | 80°F | 29% | 18% | 13 h 10 min |
| August 20 | 92°F | 80°F | 29% | 19% | 13 h 10 min |
| August 21 | 92°F | 80°F | 29% | 19% | 13 h |
| August 22 | 92°F | 80°F | 30% | 20% | 13 h |
| August 23 | 92°F | 79°F | 30% | 20% | 13 h |
| August 24 | 92°F | 79°F | 31% | 20% | 13 h |
| August 25 | 92°F | 79°F | 31% | 21% | 13 h |
| August 26 | 92°F | 79°F | 31% | 21% | 13 h |
| August 27 | 91°F | 79°F | 32% | 22% | 12 h 50 min |
| August 28 | 91°F | 79°F | 32% | 22% | 12 h 50 min |
| August 29 | 91°F | 79°F | 32% | 22% | 12 h 50 min |
| August 30 | 91°F | 79°F | 32% | 22% | 12 h 50 min |
| August 31 | 91°F | 79°F | 33% | 23% | 12 h 50 min |
- Normal high
- 92°FAugust average
- Normal low
- 80°FAugust average
- Precipitation
- 4.71 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 24
- Daylight
- 13 h 30 min to 12 h 50 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 31
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00012923; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Galveston in August?
On a given August day the chance of 0.01 inch or more is 28% on average, highest around August 31 (33%). In all, 4.71 in falls on 8 days of a normal August, 2 of them with an inch or more.
In a normal August in Galveston, 24 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00012923.
What are the records for August in Galveston?
The warmest August temperature on Galveston's official record (since 1874) is 101°F, on August 27, 2023; the coldest is 67°F, on August 27, 1913. The wettest August brought 26.67 in (2017).
The August mean against the 1991-2020 normal of 85.9°F: 2021 86.7°F (+0.8), 2022 86.8°F (+0.9), 2023 88.6°F (+2.7), 2024 87.1°F (+1.2), 2026 87.0°F (+1.1). 5 of 5 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 86.7°F | +0.8°F | 3.50 in |
| 2022 | 86.8°F | +0.9°F | 7.40 in |
| 2023 | 88.6°F | +2.7°F | 0.27 in |
| 2024 | 87.1°F | +1.2°F | 4.62 in |
| 2026 | 87.0°F | +1.1°F | 0.09 in |
Source: records: ACIS, NWS threaded record GLSthr; recent months: ACIS, station USW00012923. Records and recent months use complete months only.
How does August in Galveston compare across Texas?
Across the 321 places PlainClimate covers in Texas, August normal highs run from 87°F in Marfa to 101°F in Del Rio; Galveston's is 92°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.