Climate averages 1991–2020
Charleston weather
in April.
A warm, moderately wet month: the 7th warmest and the 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
April is a warm month in Charleston: daytime highs average 22.3°C and nights cool to about 15.0°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 74 mm of rain on roughly 8 days, which makes April a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 58 min on an average April day.
The nearest other city in this atlas is North Charleston (10 km away). In April its highs average 23.1°C, 0.8°C warmer than Charleston, with 74 mm of rain.
Among the 498 cities listed in the United States, Charleston ranks joint 142nd of 498 for the warmest April highs and joint 211th of 498 for the driest April (rainfall, lowest first). The mean April high of those 498 cities is 19.4°C; Charleston is 2.9°C warmer than that mean.
From April to May, average highs rise by 3.9°C to 26.2°C, and monthly rainfall falls from 74 mm to 68 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- North Charleston in AprilUnited States · 10 kmHigh 23.1°C · Low 14.0°C · 74 mm rain
- Savannah in AprilUnited States · 134 kmHigh 23.8°C · Low 14.5°C · 70 mm rain
- Columbia (South Carolina), United States in AprilUnited States · 170 kmHigh 23.4°C · Low 11.4°C · 85 mm rain
- Wilmington (North Carolina), United States in AprilUnited States · 245 kmHigh 21.0°C · Low 13.3°C · 82 mm rain
- Rock Hill in AprilUnited States · 259 kmHigh 21.8°C · Low 10.8°C · 89 mm rain
- Fayetteville in AprilUnited States · 271 kmHigh 22.5°C · Low 11.3°C · 85 mm rain
- Charlotte in AprilUnited States · 285 kmHigh 21.3°C · Low 9.7°C · 87 mm rain
- Concord (North Carolina), United States in AprilUnited States · 299 kmHigh 21.5°C · Low 10.4°C · 88 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.