March Weather in Charleston, United States

Last updated: February 24, 2025

March in Charleston, United States ushers in a delightful transition from winter to spring, with temperatures averaging a comfortable 15°C (60°F), peaking at a pleasant 28°C (82°F). However, the month can bring chilly nights, dipping to a low of -1°C (30°F). Visitors might encounter about 60 mm (2.4 in) of precipitation over six days, adding a touch of freshness to the air. With humidity levels around 81%, the climate is ideal for enjoying the burgeoning blooms and vibrant outdoor activities that Charleston has to offer during this picturesque month.

March Temperature in Charleston

In March, Charleston begins to shake off the winter chill, with temperatures showcasing a gentle rise as spring approaches. The month starts with a minimum of -1°C (30°F), suggesting that cooler nights still linger, but as the days progress, an average temperature of 15°C (60°F) and a maximum reaching 28°C (82°F) create a pleasantly mild atmosphere. This transition highlights a notable increase from the preceding months, reflecting a shift towards warmer, more inviting weather. As residents and visitors enjoy the blossoming scenery, March serves as a vibrant prelude to the warmer days of April and May, making it an ideal time to experience Charleston's charm.

March Weather in Charleston: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Charleston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec525760667479828178725954
Data source: Temperature data for Charleston generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Charleston

In March, Charleston experiences a moderate rainfall, with precipitation measuring 60 mm (2.4 in) over approximately 6 days. This amount remains consistent with the preceding month of January, which saw 59 mm (2.3 in), while February recorded a higher total of 78 mm (3.1 in). As spring approaches, the region begins to transition into a wetter season, foreshadowed by the upcoming April's anticipated increase to 101 mm (4.0 in). This trend suggests that Charleston's precipitation pattern becomes more pronounced as the months progress, paving the way for the summer deluges. Overall, March serves as a pivotal bridge from the drier winter months towards the lush, rain-soaked days of spring and summer.

March Precipitation Trends in Charleston

The chart displays monthly precipitation patterns in Charleston, with values for each month alongside March's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec597860101871501871831767993127
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Charleston

March in Charleston, United States, showcases a humidity level of 81%, maintaining the same comfortable atmosphere as February. As spring unfolds, humidity begins to taper slightly from the winter highs of 86% in January and 81% in February. This gradual decrease continues into April, where levels drop to 79%, suggesting a trend towards drier conditions as the warmer months approach. However, as summer arrives, humidity levels are expected to rise again, peaking around 80% to 83% in the subsequent months. Overall, Charleston’s humidity exhibits a seasonal rhythm, intertwining moist beginnings with drier late spring and early summer periods.

March Average Humidity in Charleston

This chart illustrates the average monthly humidity levels in Charleston, with March's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how March's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%81%81%79%75%75%80%81%83%78%85%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Charleston

As March rolls into Charleston, the UV Index reaches a significant 9, marking the transition to very high exposure levels. This increase from February’s 7 highlights a clear trend of intensifying sun exposure as spring arrives. With a burn time of just 15 minutes, it's crucial for residents and visitors alike to take precautionary measures to protect their skin. The sun's rays are growing stronger, and as we move towards April, the UV Index will further peak at 10. This upward trajectory underscores the importance of being sun-smart during this time. For more information on UV levels throughout the year, check out Charleston UV Index.

Maximum UV Index Levels in Charleston for March

The chart shows the monthly maximum UV Index (UVI) for Charleston in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec47910111111119864
Data source: Charleston March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

March Sunshine in Charleston

March heralds a delightful transition in Charleston, as the city basks in 275 hours of sunshine, setting a promising tone for spring. This increase in daylight marks a significant uptick from the 213 hours in February, showcasing the radiant shift towards warmer days. As the sun begins to shine more brightly, residents and visitors alike can look forward to an abundance of outdoor activities, with sunshine peaking in the months that follow—306 hours in April and a remarkable 336 hours in May. It's a time where the vibrant charm of Charleston truly comes alive, reminding everyone of the beauty and warmth awaiting in the sunny embrace of spring.

Monthly Sunshine Duration in Charleston: March Highlighted

The March sunshine duration represents the total number of hours Charleston experiences direct sunlight during the month of March, excluding cloudy or obstructed periods. This chart compares the sunshine duration of March with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec186h213h275h306h336h316h341h314h300h288h247h217h
Data source: Charleston March Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Charleston During March

In Charleston, the likelihood of sunny weather in March hovers at a moderate 38%, mirroring the trend seen in February. This percentage indicates a transitional phase as the city moves toward the sunnier months ahead. The chance of sunshine begins to rise significantly in April, jumping to a promising 56%, and continues to maintain a higher probability through May and September. With winter waning, residents and visitors alike can look forward to more rays of sunshine as spring progresses, making late March an enticing prelude to the brighter days of spring and early summer.

Percentage of Sunny Days in March in Charleston

The chart illustrates the percentage of sunny days in Charleston throughout the year, with March highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Charleston experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec45%39%38%56%52%29%34%30%51%50%62%45%
Data source: Charleston March chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Charleston in March

In March, daylight in Charleston, United States reaches a comfortable 11 hours, marking a beautiful transition from the shorter days of winter into the longer sunlit hours of spring. This duration remains consistent with February, reflecting a gentle shift as the days begin to lengthen. As the month progresses, the anticipation of warmer weather becomes palpable, setting the stage for April's notable increase to 13 hours of daylight. This upward trend continues through the spring and summer months, peaking in June and July when Charleston basks in a luxurious 14 hours of daylight. Overall, March serves as a pivotal month that bridges the darker winter months with the vibrant and extended days of spring, inviting residents to enjoy the outdoors and embrace the forthcoming warmth.

Average Daylight Hours in Charleston for March

The chart illustrates the variation in daylight duration in Charleston throughout the year, with March highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 14m11h11h 59m13h13h 51m14h 16m14h 2m13h 17m12h 19m11h 19m10h 26m10h
Data source: Charleston daylight hours, calculated by summing the hours between sunrise and sunset for each day.

March Winds in Charleston

As March rolls into Charleston, a gentle uptick in average wind speed emerges, settling at 4.0 m/s (9 mph)—the perfect harbinger of spring. This slight increase from February's 3.8 m/s (8 mph) signals a transition, with March matching the robust breeziness of May, while still holding its own against the tail end of winter. Interestingly, the winds begin to wane as summer approaches, hinting at a seasonal pattern where the brisk air of early spring gives way to the milder whispers of summer. Overall, March not only brings fresh breezes but also sets the stage for the gentle warmth that characterizes the months to come in Charleston.

Average March Wind Speed in Charleston

The chart displays monthly wind speed patterns in Charleston, with values for each month shown alongside March's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how March's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.93.84.0 m/s3.94.03.73.22.82.93.23.63.5
Data source: Charleston March wind data, generated using information from the Copernicus Climate Change Service.

How March Weather in Charleston Compares to Other Months

The weather in Charleston changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of March's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Charleston and find detailed weather information for every month.

When comparing the weather in March and January, January tends to be significantly colder, with minimum temperatures reaching as low as -13°C (9°F), while March sees a milder minimum of -1°C (30°F). The average temperature in January is around 11°C (52°F), compared to a much warmer average of 15°C (60°F) in March. Precipitation levels are relatively similar, with January receiving 59 mm (2.3 in) over 7 days and March slightly higher at 60 mm (2.4 in) across 6 days. Additionally, humidity levels in January are slightly elevated at 86%, compared to 81% in March, contributing to the overall perception of winter in January versus the spring-like feel of March. For more details on January weather, visit Charleston weather in January.

March generally offers milder and warmer weather compared to February. While February sees temperatures ranging from a minimum of -2°C (29°F) to a maximum of 26°C (79°F), March boasts slightly higher temperatures with a minimum of -1°C (30°F) and a maximum of 28°C (82°F). Additionally, March tends to be drier, with 60 mm (2.4 in) of precipitation over six days, compared to February's 78 mm (3.1 in) over nine days. Both months experience similar humidity levels at 81%, but March is typically more favorable for outdoor activities. For a more detailed comparison of February weather, refer to Charleston weather in February.

March and April show a notable progression in weather conditions, with April generally warmer and wetter. In March, temperatures range from a chilly minimum of -1°C (30°F) to a pleasant average of 15°C (60°F), peaking at 28°C (82°F). March also experiences lower precipitation, totaling 60 mm (2.4 in) over 6 days, with humidity at 81%.

By April, the temperatures rise, starting at a minimum of 4°C (39°F), averaging 19°C (66°F), and reaching a maximum of 31°C (89°F). However, April also brings increased rainfall, with 101 mm (4.0 in) spread across 8 days, accompanied by slightly lower humidity at 79%.

For more detailed insights on weather in April, check out Charleston weather in April.

March and May exhibit notable differences in weather patterns. In March, temperatures range from a chilly -1°C (30°F) at night to a warm 28°C (82°F) during the day, resulting in an average of about 15°C (60°F). This month experiences around 60 mm (2.4 in) of precipitation over 6 days, with a relatively high humidity of 81%. In contrast, May sees a significant rise in temperatures, with minimums around 9°C (49°F) and maximums hitting 37°C (98°F), averaging 23°C (74°F). Although May has higher precipitation at 87 mm (3.4 in) spread over 9 days, the humidity decreases to 75%. For more details, visit Charleston weather in May.

March and June present quite different weather patterns. In March, temperatures range from a chilly minimum of -1°C (30°F) to a pleasant average of 15°C (60°F) and can peak at 28°C (82°F). The month experiences moderate precipitation, with about 60 mm (2.4 in) falling over 6 days, and humidity levels are relatively high at 81%. In contrast, June brings much warmer weather, with minimum temperatures starting at 16°C (61°F) and averaging around 26°C (79°F), reaching highs of 35°C (95°F). June also sees increased rainfall, with approximately 150 mm (5.9 in) over 19 days, but humidity drops slightly to 75%. For more details, check out Charleston weather in June.

The weather in March and July presents a striking contrast in temperature and precipitation patterns. In March, temperatures range from a brisk minimum of -1°C (30°F) to a comfortable average of 15°C (60°F), with a maximum reaching 28°C (82°F). This month experiences relatively low precipitation, totaling 60 mm (2.4 in) over about six days, and maintains a higher humidity level at 81%. In contrast, July is much warmer, with minimum temperatures starting at a mild 20°C (69°F) and reaching an average of 28°C (82°F) and a peak of 34°C (94°F). It also sees increased rainfall, accumulating 187 mm (7.4 in) over approximately 20 days, while humidity remains similar at 80%. For more detailed insights, you can check Charleston weather in July.

March and August exhibit striking differences in temperature and precipitation patterns. In March, temperatures range from a chilly -1°C (30°F) at night to a pleasant 28°C (82°F) during the day, with an average temperature of 15°C (60°F). Although there is some precipitation, totaling 60 mm (2.4 in) over 6 days, the humidity remains relatively high at 81%. In contrast, August experiences much warmer temperatures, with nighttime lows of 21°C (70°F) and highs that can reach up to 35°C (95°F), averaging 27°C (81°F). The summer month is also significantly wetter, receiving 183 mm (7.2 in) of rain across 21 days, while maintaining the same humidity level of 81%. For more detailed information, you can check Charleston weather in August.

In March, temperatures in Charleston can range from a chilly minimum of -1°C (30°F) to a pleasant maximum of 28°C (82°F), with an average temperature of around 15°C (60°F). The month experiences relatively low precipitation, with 60 mm (2.4 in) falling over approximately 6 days, resulting in a humidity level of 81%. In contrast, September brings warmer temperatures, with minimums of 14°C (57°F), average highs reaching 26°C (78°F), and maximums soaring up to 35°C (94°F). However, September is also much wetter, recording 176 mm (6.9 in) of rain over 14 days, and experiencing a slightly higher humidity of 83%. For a comprehensive overview of what to expect, check out Charleston weather in September.

March and October display distinct differences in weather patterns. In March, temperatures can range from a chilly low of -1°C (30°F) to a pleasant high of 28°C (82°F), with an average of 15°C (60°F). The month experiences about 60 mm (2.4 in) of precipitation, falling over approximately 6 days, along with relatively high humidity levels at 81%. In contrast, October features a milder temperature range with minimums around 3°C (38°F) and maximums reaching 31°C (89°F), averaging at 22°C (72°F). Rainfall increases slightly to 79 mm (3.1 in), occurring over 9 days, while humidity remains comparable at 78%. For more detailed insights, you can check Charleston weather in October.

March and November share some similarities in temperature, with both months experiencing minimums around -1°C (30°F) and average highs reaching up to 28°C (82°F). However, March tends to be slightly warmer on average at 15°C (60°F), while November's average is just a notch cooler at 15°C (59°F). In terms of precipitation, November sees more rain with 92 mm (3.6 in) over 8 days compared to March's 60 mm (2.4 in) over 6 days, resulting in higher humidity levels—85% in November versus 81% in March. For more detailed information, you can check out Charleston weather in November.

In March, temperatures in Charleston range from a brisk minimum of -1°C (30°F) to a comfortable maximum of 28°C (82°F), with an average of 15°C (60°F). The month sees about 60 mm (2.4 in) of precipitation over 6 days, with humidity levels at 81%. In contrast, December experiences slightly cooler temperatures, with a minimum of -3°C (28°F) and a maximum of 25°C (77°F), averaging 12°C (54°F). Moreover, December is wetter, receiving approximately 127 mm (5.0 in) of rain across 9 days, and has a higher humidity level of 87%. For more detailed information, you can visit Charleston weather in December.

Compare Charleston's Climate with Cities Worldwide

Conclusion: What to Expect From March Weather in Charleston

As winter transitions into spring, March in Charleston offers a delightful break from the cooler temperatures of the previous months. With milder averages and an uptick in warmth, residents and visitors alike can enjoy outdoor activities amidst the vibrant blooms of the season. Although occasional showers may pepper the month—bringing about 60 mm of precipitation over just a few days—the overall humidity level of 81% complements the refreshing weather. March marks a welcome shift, earning its place as a month of renewal before the heat of summer sets in. For a deeper understanding of how this month fits into the overall climate, explore Charleston Climate.