Climate averages 1991–2020
Columbia (South Carolina), United States weather
in August.
A hot, wet month: the 2nd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Columbia (South Carolina), United States: daytime highs average 31.2°C and nights cool to about 22.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 107 mm of rain on roughly 13 days, which makes August a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 25 min on an average August day.
The nearest other city in this atlas is Rock Hill (103 km away). In August its highs average 30.4°C, 0.8°C cooler than Columbia (South Carolina), United States, with 102 mm of rain.
Among the 498 cities listed in the United States, Columbia (South Carolina), United States ranks joint 156th of 498 for the warmest August highs and joint 430th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Columbia (South Carolina), United States is 1.3°C warmer than that mean.
From August to September, average highs fall by 2.9°C to 28.3°C, and monthly rainfall falls from 107 mm to 94 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Columbia (South Carolina), United States climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.3°C2.7°C | 2.7°C | 89 | 9.1 | 10.210 h |
| February | 14.4°C3.9°C | 3.9°C | 87 | 8.3 | 10.911 h |
| March | 18.4°C7.1°C | 7.1°C | 89 | 9.3 | 12.012 h |
| April | 23.4°C11.4°C | 11.4°C | 85 | 8.1 | 13.013 h |
| May | 27.6°C16.3°C | 16.3°C | 76 | 9.3 | 13.914 h |
| June | 30.7°C20.7°C | 20.7°C | 108 | 13.4 | 14.414 h |
| July | 32.3°C22.7°C | 22.7°C | 112 | 15.2 | 14.214 h |
| August, selected | 31.2°C22.0°C | 22.0°C | 107 | 13.4 | 13.413 h |
| September | 28.3°C19.0°C | 19.0°C | 94 | 8.8 | 12.412 h |
| October | 23.3°C13.1°C | 13.1°C | 84 | 7.1 | 11.411 h |
| November | 17.8°C7.4°C | 7.4°C | 72 | 7.2 | 10.410 h |
| December | 13.6°C4.2°C | 4.2°C | 93 | 8.8 | 9.910 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Rock Hill in AugustUnited States · 103 kmHigh 30.4°C · Low 21.4°C · 102 mm rain
- Charlotte in AugustUnited States · 137 kmHigh 30.2°C · Low 20.8°C · 96 mm rain
- Gastonia in AugustUnited States · 141 kmHigh 30.0°C · Low 21.1°C · 102 mm rain
- North Charleston in AugustUnited States · 161 kmHigh 30.1°C · Low 23.8°C · 160 mm rain
- Concord (North Carolina), United States in AugustUnited States · 162 kmHigh 30.4°C · Low 21.2°C · 96 mm rain
- Charleston in AugustUnited States · 170 kmHigh 29.6°C · Low 24.5°C · 160 mm rain
- Savannah in AugustUnited States · 213 kmHigh 30.4°C · Low 23.9°C · 150 mm rain
- Athens, United States in AugustUnited States · 216 kmHigh 30.8°C · Low 21.5°C · 108 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Columbia) is explained once on the Columbia (South Carolina), United States year overview and on the Sources, method and limits page.