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Charleston in March: weather, sea & travel advice
This month's data profile
Strong month under the current formula
Charleston in March is climatically well suited to city breaks and active holidays and hiking. The average daily high is around 20 °C, and the sea is about 16 °C. With about 10 rainy days it is moderate.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
63/100 · #6
Warmth
#9
Dryness
#7
Sun
#7
Sea warmth
#10
Published best categories: City break, Active
Charleston · MarchPhoto: Something Original ( talk ) · CC BY-SA 3.0Climate facts
- Average high
- 20 °C
- Average low
- 9 °C
- Sea
- 16 °C
- Rainy days (est.)
- 10 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 78 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| February | 16 | 6 | 9 | 82 | 4.3 | 81 | 1.5 | 15 | 52 |
| March (selected) | 20 | 9 | 10 | 90 | 5.7 | 78 | 1.5 | 16 | 63 |
| April | 24 | 13 | 9 | 82 | 7.3 | 75 | 1.4 | 19 | 78 |
How do the previous and next months compare?
Baseline: March (63/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| February | -11 | -3.5 °C | -3.2 °C | -1.2 | -8.5 mm | -1.4 h | +2.7 % | ±0 m/s | -1.2 °C |
| April | +15 | +4.3 °C | +4.1 °C | -0.9 | -8.7 mm | +1.6 h | -3.2 % | -0.1 m/s | +2.7 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Charleston in March?
The average daily high is around 20 °C, with an average daily low of about 9 °C.
Can you swim in Charleston in March?
The sea is about 16 °C (cold).
Does it rain a lot in Charleston in March?
The curated estimate is about 10 rainy days per month, not a directly measured long-term average. Total precipitation averages around 90 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Charleston?
By the climate score, April, May, October and November are the strongest months for Charleston. For a beach trip: May, June, September and October. March is not among them.