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Charleston in January: weather, sea & travel advice
This month's data profile
Balanced monthly profile
Charleston in January is climatically mixed. The average daily high is around 14 °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
45/100 · #12
Warmth
#12
Dryness
#6
Sun
#11
Sea warmth
#11
Published best categories: none
Charleston · JanuaryPhoto: Something Original ( talk ) · CC BY-SA 3.0Climate facts
- Average high
- 14 °C
- Average low
- 4 °C
- Sea
- 16 °C
- Rainy days (est.)
- 10 rainy days (est.)
- Sun (est.)
- 3 h/day
- Humidity
- 81 %
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 |
|---|---|---|---|---|---|---|---|---|---|
| December | 16 | 6 | 9 | 88 | 3.1 | 82 | 1.4 | 18 | 52 |
| January (selected) | 14 | 4 | 10 | 86 | 3.4 | 81 | 1.5 | 16 | 45 |
| February | 16 | 6 | 9 | 82 | 4.3 | 81 | 1.5 | 15 | 52 |
How do the previous and next months compare?
Baseline: January (45/100)
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 | |
|---|---|---|---|---|---|---|---|---|---|
| December | +7 | +1.7 °C | +1.8 °C | -0.5 | +1.5 mm | -0.3 h | +0.7 % | -0.1 m/s | +1.8 °C |
| February | +7 | +2 °C | +1.6 °C | -1.1 | -4.5 mm | +0.9 h | -0.2 % | ±0 m/s | -0.7 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Charleston in January?
The average daily high is around 14 °C, with an average daily low of about 4 °C.
Can you swim in Charleston in January?
The sea is about 16 °C (cold).
Does it rain a lot in Charleston in January?
The curated estimate is about 10 rainy days per month, not a directly measured long-term average. Total precipitation averages around 86 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. January is not among them.