Climate normals · 1970–2000
Charleston Climate
Charleston is a city in United States (SC) with a population of about 132,609. Its average annual temperature is 18.8°C (66°F), with roughly 1275 mm of rain per year.
18.8°C
Avg Temp
1275
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
Charleston Climate
Charleston has an average annual temperature of 18.8°C (66°F) and receives about 1275 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
18.8°C
Avg Temp
1275
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 9° / 49° | 97 mm |
| February | 11° / 51° | 80 mm |
| March | 15° / 58° | 105 mm |
| April | 18° / 65° | 68 mm |
| May | 22° / 72° | 89 mm |
| June | 26° / 78° | 139 mm |
| July | 28° / 82° | 150 mm |
| August | 27° / 81° | 180 mm |
| September | 25° / 77° | 143 mm |
| October | 20° / 67° | 80 mm |
| November | 15° / 59° | 64 mm |
| December | 11° / 52° | 80 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Charleston
The most comfortable months to visit Charleston are typically October, May and April, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near 4°C low). August is usually the wettest month.
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Frequently Asked Questions
The most comfortable months to visit Charleston are typically October, May and April, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Charleston, United States has an average annual temperature of 18.8°C and about 1275 mm of precipitation per year. The warmest month is July and the coldest is January.
In July, the hottest month, daily highs in Charleston average about 32°C (90°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.