Climate averages 1991–2020
Charleston weather
in October.
A warm, wet month: the 6th warmest and the 8th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in Charleston: daytime highs average 23.8°C and nights cool to about 17.3°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 101 mm of rain on roughly 8 days, which makes October a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 24 min on an average October day.
The nearest other city in this atlas is North Charleston (10 km away). In October its highs average 23.9°C, about as warm as Charleston, with 101 mm of rain.
Among the 498 cities listed in the United States, Charleston ranks joint 202nd of 498 for the warmest October highs and joint 416th of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Charleston is 2.4°C warmer than that mean.
From October to November, average highs fall by 4.6°C to 19.1°C, and monthly rainfall falls from 101 mm to 65 mm.
The annual picture
October 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
Charleston climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 14.4°C7.1°C | 7.1°C | 81 | 8.4 | 10.310 h |
| February | 15.9°C8.4°C | 8.4°C | 84 | 7.8 | 11.011 h |
| March | 18.6°C11.2°C | 11.2°C | 81 | 8.2 | 12.012 h |
| April | 22.3°C15.0°C | 15.0°C | 74 | 7.5 | 13.013 h |
| May | 26.2°C19.5°C | 19.5°C | 68 | 9.0 | 13.814 h |
| June | 29.0°C23.2°C | 23.2°C | 130 | 16.3 | 14.314 h |
| July | 30.4°C24.9°C | 24.9°C | 138 | 17.7 | 14.114 h |
| August | 29.6°C24.5°C | 24.5°C | 160 | 18.9 | 13.413 h |
| September | 27.6°C22.2°C | 22.2°C | 128 | 13.2 | 12.412 h |
| October, selected | 23.8°C17.3°C | 17.3°C | 101 | 7.8 | 11.411 h |
| November | 19.1°C12.1°C | 12.1°C | 65 | 6.7 | 10.511 h |
| December | 15.9°C8.9°C | 8.9°C | 86 | 7.6 | 10.010 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
October in nearby cities
- North Charleston in OctoberUnited States · 10 kmHigh 23.9°C · Low 16.1°C · 101 mm rain
- Savannah in OctoberUnited States · 134 kmHigh 24.5°C · Low 16.7°C · 97 mm rain
- Columbia (South Carolina), United States in OctoberUnited States · 170 kmHigh 23.3°C · Low 13.1°C · 84 mm rain
- Wilmington (North Carolina), United States in OctoberUnited States · 245 kmHigh 22.7°C · Low 15.9°C · 100 mm rain
- Rock Hill in OctoberUnited States · 259 kmHigh 22.0°C · Low 12.4°C · 83 mm rain
- Fayetteville in OctoberUnited States · 271 kmHigh 22.4°C · Low 12.9°C · 82 mm rain
- Charlotte in OctoberUnited States · 285 kmHigh 21.5°C · Low 11.4°C · 81 mm rain
- Concord (North Carolina), United States in OctoberUnited States · 299 kmHigh 21.6°C · Low 12.0°C · 83 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 Charleston) is explained once on the Charleston year overview and on the Sources, method and limits page.
North Charleston lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.