Climate and monthly weather forecastMount Pleasant, SC
Climate and monthly weather forecast
The climate of Mount Pleasant
Mount Pleasant, South Carolina, is characterized by a humid subtropical climate, in line with the Köppen climate classification of Cfa. With conditions suggesting the absence of a dry season, Mount Pleasant offers a mild and moist atmosphere, predominantly throughout the year. The town is located in the northern hemisphere and experiences a significant amount of rainfall year-round, alongside minor variations in weather parameters.A look into the temperatures reveals that yearly averages waver between 45.1°F (7.3°C) to 87.6°F (30.9°C), setting the town in a comfortable to warm spectrum throughout the months. The highest averages occur from June to August, bringing peak warmth, while January sees the lowest temperatures. However, the extremes are balanced out, delivering a generally moderate climate.
Humidity, supporting the Cfa classification, remains remarkably consistent, identifying an average relative humidity between 73% to 78% across the months. Rainfall follows a similar story, with an annual range from 1.38" (35mm) in January to 8.03" (204mm) in August. The busiest rainfall periods typically arrive in midsummer, alongside an increased number of rainy days.
The aspect of Mount Pleasant's climate that stands out is its notable daylight time, ranging between 10 hours in December to over 14 hours in June. This results in prolonged sunlight exposure, creating suitable conditions for outdoor activities. However, there is a significant reduction of sunshine hours in November, contrasting with the lengthened hours in the summer.
The best time to visit Mount Pleasant
The optimum period for exploring Mount Pleasant, South Carolina, interestingly ranges from April to May and then again from September to November. These months offer pleasant weather with lesser extremes and bearable humidity levels, enhancing the overall tourist experience. During these periods, temperatures are moderate, averaging about 72.1°F (22.3°C) to 79°F (26.1°C) during spring and 83.3°F (28.5°C) to 65.7°F (18.7°C) in the autumn season. The visitors in these periods can enjoy over 9.9 hours of sunshine, with a more comfortable UV index range of 5 to 7.The Worst Time to Visit Mount Pleasant
The month of August stands out as a less favorable time for visiting Mount Pleasant. The average daily temperatures touch 86.7°F (30.4°C) as the weather ranges from hot to extreme, coupled with the highest average humidity of 76%. The month also records the highest average rainfall of 8.03" (204mm). While some visitors might appreciate the tropical, wet conditions, extensive outdoor activities might be hindered due to these weather conditions.Spring Weather in Mount Pleasant
Mount Pleasant displays its mild side during spring months, with temperatures averaging between 60.4°F (15.8°C) in February to 79°F (26.1°C) in May. March and April receive an average rainfall between 1.97" (50mm) to 2.99" (76mm). Visitors during this season can enjoy an average of over 7.8 hours of sunshine each day.Summer Weather in Mount Pleasant
Summers in Mount Pleasant are humid and hot, with the temperature peaking at 87.6°F (30.9°C) in July. August stands as the wettest month, receiving an average rainfall of 8.03" (204mm), alongside the highest number of rainy days. However, the wealth of sunshine, averaging over 10.9 hours a day, balances out the muggy conditions.Autumn Weather in Mount Pleasant
Autumn brings a cooling trend to Mount Pleasant, with temperatures decreasing gradually from 83.3°F (28.5°C) in September to 65.7°F (18.7°C) in November. October reveals a drought-like condition with 1.97" (50mm) of rainfall, contrasting with the overall wet climate throughout the year. Autumn's daylight hours stay comfortable, averaging around 10.5 to 12.4 hours daily.Winter Weather in Mount Pleasant
Winter in Mount Pleasant does not exhibit an extremity of coldness, with temperatures oftentimes averaging between 57.2°F (14°C) in December and 45.1°F (7.3°C) in January. While snow is a rarity, slight traces may fall in January, averaging 0.1" (3mm). December emerges as the month with the lowest amount of daily sunshine, averaging 5.7 hours, suggesting that daylight hours are noticeably short during this season.Weather in January
Known for its cooler temperatures as the city is in the height of winter, January in Mount Pleasant, South Carolina, reveals a unique weather profile. Subtle variations in weather factors can be perceived as snowfall peaks for the year at 0.1" (3mm) and the lowest average daylight hours settles at 10.3. Weather in January »Weather in February
February in Mount Pleasant represents a tangible shift in climatic conditions. Temperature fluctuations signify the emergence of milder weather with a slight increase from January as high temperatures reach 60.4°F (15.8°C) and wind speeds average around 9.5mph (15.3km/h). Weather in February »Weather in March
Signs of spring begin to manifest in March, altering the atmospheric dynamics in Mount Pleasant. Amplifying this season change, there's an increased UV index of 5 and daily sunshine hours increment to 7.8. As the month progresses, the city observes a rise in temperature, a pattern that lays the groundwork for forthcoming warm days of summer. Weather in March »Weather in April
In April, Mount Pleasant experiences a noticeable leap into spring and paving the way to summer. The city’s climate undergoes a transformation, characterized by proficient sunshine hours extending to 9.9 and temperatures soaring up to 72.1°F (22.3°C). Weather in April »Weather in May
May brings a surge in warmth heralding the onset of early summer in Mount Pleasant. Underpinning this shift, high temperatures escalate to a significant 79°F (26.1°C) on average, with daylight hours peaking at 13.9. Coupled with longer day span and rising temperature, this month offers ample opportunities for outdoor activities and picnics. Weather in May »Weather in June
Come June, Mount Pleasant is in the full swing of summer with predictable warm weather conditions. A distinctive feature of this month’s weather is the highest number of rainy days being 20.8. While high temperatures persist throughout the month, the city enjoys more sunlight than any other month, observing 14.3 daylight hours. Weather in June »Weather in July
July is the heart of summer in Mount Pleasant with significantly warmer days. Marking the zenith of summer, there's an exponential jump in high temperatures as it reaches 87.6°F (30.9°C). Despite heavy rainfall, the increased sunshine hours to 10.9 make for an idyllic summer. Weather in July »Weather in August
August persists with the established pattern of warmth, maintaining the dominance of summer in Mount Pleasant. Rainfall reaches its yearly peak with a considerable 8.03" (204mm) contributing to a rise in overall humidity. Amid the prevalent heat, periodic rain showers can create pleasantly cool days. Weather in August »Weather in September
It's the beginning of fall in September in Mount Pleasant, broadly characterized by the decrease in daily high temperature down to 83.3°F (28.5°C). The ambiance feels different as the ravages of summer simmer down to bring about shorter days and relieving winds. Weather in September »Weather in October
October in Mount Pleasant is a manifestation of classical fall conditions, presented through a significant shift towards cooler temperatures. The decrease in average high temperatures to 75.6°F (24.2°C) and fewer rainy days of approximately 11.5 sets a distinctive fall ambiance. Weather in October »Weather in November
November ushers in a cooler grasp on the city of Mount Pleasant with reduced high temperatures hovering around 65.7°F (18.7°C). This shift is complemented by a further decrease in daylight hours to 10.5. The town prepares itself for the final transition into winter as colder temperatures become more frequent. Weather in November »Weather in December
As the year rounds up, December brings familiar winter conditions to Mount Pleasant. A significant drop in average high temperature to 60.6°F (15.9°C) emphasizes the winter setting. Despite shorter and colder days, the city is quite lively with a fair share of sunny hours and ample opportunities for winter festivities. Weather in December »Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January is the coldest month in Mount Pleasant, South Carolina, exhibiting average temperatures of 57.2°F (14°C) at the peak and 45.1°F (7.3°C) at the base.
January and March, with an average relative humidity of 73%, are the least humid months.
The month with the least rainfall in Mount Pleasant, South Carolina, is January, when the rain falls for 9.8 days and typically collects 1.38" (35mm) of precipitation.
Throughout the year, in Mount Pleasant, there are 182.9 rainfall days, and 44.69" (1135mm) of precipitation is accumulated.
Months with snowfall are January, February and December.
In Mount Pleasant, during the entire year, snow falls for 0.4 days and aggregates up to 0.59" (15mm) of snow.
January is the month with the lowest UV index in Mount Pleasant, South Carolina, with an average maximum UV index of 3.
In Mount Pleasant, South Carolina, snow does not fall in March through November.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Mount Pleasant, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
May through August, with an average maximum UV index of 7, are months with the highest UV index.
June has the longest days of the year in Mount Pleasant, South Carolina, with an average of 14h and 18min of daylight.
June and July, with an average of 10.9h of sunshine, are months with the most sunshine in Mount Pleasant.
July is the warmest month in Mount Pleasant, South Carolina, exhibiting average temperatures of 87.6°F (30.9°C) at the peak and 77.9°F (25.5°C) at the base.
The month with the most rainfall in Mount Pleasant, South Carolina, is August, when the rain falls for 25.8 days and typically aggregates up to 8.03" (204mm) of precipitation.
The most humid month in Mount Pleasant, South Carolina, is December, with an average relative humidity of 78%.
The month with the most snowfall in Mount Pleasant is December, when 0.31" (8mm) of snow is typically aggregated.
December has the shortest days of the year, with an average of 10h and 0min of daylight.
With an average of 5.7h of sunshine, December has the least sunshine of the year.
Average temperature
Mount Pleasant, SC
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (57.2°F).
The month with the highest average low temperature is July (77.9°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).
Average pressure
Mount Pleasant, SC
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed
Mount Pleasant, SC
- Average wind speed in January:
9.3mph - Average wind speed in February:
9.5mph - Average wind speed in March:
9.6mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.9mph - Average wind speed in June:
8.4mph
- Average wind speed in July:
8.5mph - Average wind speed in August:
7.8mph - Average wind speed in September:
8.6mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity
Mount Pleasant, SC
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January and March (73%).
Average rainfall
Mount Pleasant, SC
- Average rainfall in January:
1.38" - Average rainfall in February:
2.01" - Average rainfall in March:
1.97" - Average rainfall in April:
2.99" - Average rainfall in May:
3.23" - Average rainfall in June:
4.61"
- Average rainfall in July:
5.51" - Average rainfall in August:
8.03" - Average rainfall in September:
5.47" - Average rainfall in October:
3.27" - Average rainfall in November:
1.97" - Average rainfall in December:
4.25"
The wettest month (with the highest rainfall) is August (8.03").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days
Mount Pleasant, SC
- Average rainfall days in January:
9.8 days - Average rainfall days in February:
10.9 days - Average rainfall days in March:
11.7 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
16.5 days - Average rainfall days in June:
20.8 days
- Average rainfall days in July:
24.6 days - Average rainfall days in August:
25.8 days - Average rainfall days in September:
19.4 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is August (25.8 days).
The month with the least rainy days is November (8.6 days).
Average snowfall
Mount Pleasant, SC
The month with the highest snowfall is December (0.3").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days
Mount Pleasant, SC
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.1 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
Mount Pleasant, SC
- Average daylight in January:
10h and 18min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 24min - Average daylight in November:
10h and 30min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
5h and 54min - Average sunshine in February:
6h and 42min - Average sunshine in March:
7h and 48min - Average sunshine in April:
9h and 54min - Average sunshine in May:
10h and 24min - Average sunshine in June:
10h and 54min
- Average sunshine in July:
10h and 54min - Average sunshine in August:
10h and 42min - Average sunshine in September:
9h and 12min - Average sunshine in October:
6h and 42min - Average sunshine in November:
6h and 6min - Average sunshine in December:
5h and 42min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days
Mount Pleasant, SC
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
15.6 days - Average sunshine days in March:
17.5 days - Average sunshine days in April:
15.8 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
6.8 days
- Average sunshine days in July:
4.3 days - Average sunshine days in August:
3 days - Average sunshine days in September:
8.1 days - Average sunshine days in October:
18.1 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
18.2 days
The months with the most sunshine days are January and November (19.3 days).
The month with the least sunshine days is August (3 days).
Average UV index
Mount Pleasant, SC
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover
Mount Pleasant, SC
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 26).
Average visibility
Mount Pleasant, SC
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
