March weather forecast and climate
Charleston, SC

Trees along both sides of a street in Charleston, South Carolina, seen in the twilight light
Trees along both sides of a street in Charleston, South Carolina, seen in the twilight light

What is the temperature in March in Charleston?

In March, in Charleston, South Carolina, the average high-temperature is 69.6°F (20.9°C), and the average low-temperature is 46.8°F (8.2°C).

How much does it rain in Charleston in March?

In Charleston, in March, it is raining for 7.9 days, with typically 3.7" (94.2mm) of accumulated precipitation.

Does it snow in Charleston in March?

In March, in Charleston, South Carolina, it doesn't snow. February is the latest month when it typically snows.

What is the sea temperature in March in Charleston?

In Charleston, South Carolina, in March, the average water temperature is 62.2°F (16.8°C). For most, swimming in 62.2°F (16.8°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).
Average temperature in March - Charleston, SC
  • Average high temperature in March: 69.6°F

The warmest month (with the highest average high temperature) is July (91.1°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in March: 46.7°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (37.5°F).

Average humidity in March - Charleston, SC
  • Average humidity in March: 68.1%

The month with the highest relative humidity is August (78.9%).
The month with the lowest relative humidity is February (67.4%).

Average rainfall in March - Charleston, SC
  • Average rainfall in March: 3.7"

The wettest month (with the highest rainfall) is August (7.2").
The driest month (with the lowest rainfall) is November (2.4").

Average rainfall days in March - Charleston, SC
  • Average rainfall days in March: 7.9 days

The month with the highest number of rainy days is August (13.2 days).
The month with the lowest number of rainy days is November (7 days).

Average snowfall in March - Charleston, SC
  • Average snowfall in March: 0"

The month with the highest snowfall is December (0.5").
Months with the lowest snowfall are January, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in March - Charleston, SC
  • Average snowfall days in March: 0 days

Months with the highest number of snowfall days are February and December (0.2 days).
Months with the lowest number of snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average sea temperature in March - Charleston, SC
  • Average sea temperature in March: 62.3°F

The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (61.9°F).

Average daylight in March / Average sunshine in March - Charleston, SC
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 14.3h).
The month with shortest days is December (Average daylight: 10h).

  • Average sunshine in March: 7.9h

The month with most sunshine is May (Average sunshine: 9.5h).
The month with least sunshine is December (Average sunshine: 5.5h).

Average UV index in March - Charleston, SC
  • Average UV index in March: 7

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).

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