CharlestonPhoto: Something Original ( talk ) · CC BY-SA 3.0USA · North America
Best time to visit Charleston
Charleston pairs a historic cityscape with a long warm season; the selected months avoid the strongest summer heat. In the 1991–2025 normals, Charleston reaches typical daytime highs of about 25 °C in the strongest candidate month, October. The four selected travel months are March, April, October, November.
Climate decision
Best travel months for Charleston
Top recommendation
Next highest scores
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Latest 5-year values 2021–2025
Average of the five most recent complete years compared with the 1991–2025 climate average.
July · Wet days
25 days/month
1991–2025: 21.2 days/month
+3.8 days/month · higher
March · Mean daily maximum
21.3 °C
1991–2025: 19.8 °C
+1.5 °C · higher
October · Monthly precipitation
65.3 mm/month
1991–2025: 100.6 mm/month
-35.4 mm/month · lower
July · Sea temperature
28.9 °C
1991–2025: 28.4 °C
+0.6 °C · higher
July: 138/155 days at or above 30 °C; highest single value 39.3 °C.
Five-year historical sample, not a weather forecast or long-term climate trend. Individual hot days can be far above the monthly mean.
Annual profile · Coast and sea
Charleston: the swimming season follows two curves
Average daily highs vary by 18.2 °C through the year, while the sea varies by 13.4 °C. Air and water temperature should therefore be considered separately.
The practical difference
The month with the highest daytime temperature and the month with the warmest sea need not define the same travel window. Rain and sunshine help resolve the trade-off.
Warmest sea
August · 28.5 °C
Highest average daily high
July · 32.4 °C
Fewest rainy days
November · 7.3
Most sunshine
June · 7.9 h
Month by month
Overall suitability per month. Tap a month for details.
All climate figures compared
The table is the complete accessible data view; the charts below highlight selected patterns.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Rain mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| January | 14 | 4 | 10 | 86 | 3.4 | 81 | 1.5 | 16 | 45 |
| February | 16 | 6 | 9 | 82 | 4.3 | 81 | 1.5 | 15 | 52 |
| March | 20 | 9 | 10 | 90 | 5.7 | 78 | 1.5 | 16 | 63 |
| April | 24 | 13 | 9 | 82 | 7.3 | 75 | 1.4 | 19 | 78 |
| May | 29 | 18 | 12 | 86 | 7.8 | 73 | 1.3 | 23 | 75 |
| June | 31 | 22 | 18 | 139 | 7.9 | 76 | 1.2 | 26 | 58 |
| July | 32 | 24 | 21 | 153 | 7.7 | 77 | 1.2 | 28 | 49 |
| August | 32 | 24 | 21 | 173 | 6.8 | 79 | 1.1 | 28 | 51 |
| September | 29 | 21 | 14 | 128 | 5.9 | 80 | 1.3 | 27 | 68 |
| October | 25 | 15 | 9 | 101 | 5.0 | 79 | 1.3 | 24 | 85 |
| November | 20 | 10 | 7 | 66 | 3.9 | 79 | 1.3 | 20 | 72 |
| December | 16 | 6 | 9 | 88 | 3.1 | 82 | 1.4 | 18 | 52 |
Climate through the year
Compare temperature, rainy days, sunshine and, for coastal destinations, sea temperature month by month.
Find a place to stay
Where to stay in Charleston
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Useful next decisions
Similar destinations
The number is the overall climate score, not a similarity score.
Country and region
Frequently asked questions
When is the best time to visit Charleston?
The strongest climate months are April, May, October, November. Values are historical averages, not a forecast.
Which month has the highest average daily maximum temperature in Charleston?
The average daily maximum temperature in Charleston is highest in July at around 32 °C.
When is the sea warmest at Charleston?
In August, at around 28 °C.