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Climate of Charleston
Charleston has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Charleston is 23° degrees and there is about 865 mm of rain in a year. It is dry for 163 days a year with an average humidity of 75% and an UV-index of 5.
Climate averages for the whole year
- Day: the average daily temperature during the day is between 14°C and 31°C
- Night:the average nighttime temperature is between 7°C and 25°C
- Sea temperature: the sea temperature is between 13°C and 34°C
- Rain: it rains 174 days and there is a total of approximately 863 mm rainfall
- Sun hours: throughout the year there are 3163 sun hours
| Maximum temperature: | between 14°C and 31°C |
| Warmest month: | 31°C in July |
| Coldest month: | 14°C in January |
| Night temperature: | between 7°C and 25°C |
| Sea temperature: | between 13°C and 34°C |
| Dry days: | 191 days |
| Days with rain: | 174 days |
| Days with snow: | 0 days |
| Total rain sum: | 863 mm |
| Hours of sunshine: | 3163 hours |
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Temperature graph
This graph shows the average maximum temperature (red) and minimum temperature (blue) for Charleston.
Precipitation graph
This graph shows the average amount of rainfall per month for Charleston.
Climate table of Charleston
In this climate table you can see at a glance what the average weather per month is for Charleston. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Charleston might be like in a given month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day temp. (°C) | 14 | 16 | 18 | 23 | 26 | 30 | 31 | 31 | 29 | 24 | 19 | 16 |
| Night temp. (°C) | 7 | 9 | 11 | 16 | 20 | 24 | 25 | 25 | 23 | 18 | 12 | 9 |
| Water temp. (°C) | 13 | 23 | 16 | 27 | 31 | 34 | 33 | 34 | 32 | 25 | 19 | 18 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Precipitation (mm) | 33 | 42 | 47 | 55 | 72 | 89 | 111 | 135 | 89 | 68 | 44 | 78 |
| Days with rain | 9 | 10 | 12 | 12 | 16 | 19 | 23 | 24 | 19 | 10 | 9 | 11 |
| Dry days | 22 | 18 | 19 | 18 | 15 | 11 | 8 | 7 | 11 | 21 | 21 | 20 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Sun hours per day | 6 | 7 | 8 | 10 | 11 | 12 | 12 | 12 | 9 | 7 | 6 | 6 |
| Wind force (Bft) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| UV-index | 3 | 4 | 5 | 6 | 7 | 7 | 7 | 7 | 6 | 5 | 4 | 4 |
Best time to visit Charleston
The best time to visit Charleston in the state of South Carolina is from March through June and September through November. In this period you have a warm temperature and little precipitation. The highest average temperature in Charleston is 31°C in July and the lowest is 14°C in January. The highest water temperature is 34°C and at its coldest the water is 13°C.
Climate of Charleston by month
What is the average climate in a given month for Charleston? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.
Charleston weather experiences
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