Climate and monthly weather forecastAiken, SC
Climate and monthly weather forecast
The climate of Aiken
Aiken, South Carolina, USA, falls under the Cfa category according to the Köppen climate classification, which indicates a humid subtropical climate with no dry season. The city is positioned in the southeastern section of the United States, which contributes to its relatively temperate climate.This region experiences a range of temperatures throughout the year. The coldest month typically is January, boasting a low average temperature of 37.9°F (3.3°C), while July and August share the spotlight for the hottest months, with high average temperatures perching at 91°F (32.8°C) and 89.6°F (32°C) respectively. Fluctuations in temperature create a varied climate, with the transition from colder to warmer months leading to considerable shifts in weather patterns.
Humidity levels remain relatively consistent throughout the year, registering an average relative humidity between 70% and 75%. Rainfall patterns manifest a notable consistency too, with the most significant amount of precipitation of 3.15" (80mm) occurring in December, followed by August with 2.8" (71mm) of rain. Snowfall is a rarity in Aiken, with minimal amounts recorded primarily in the winter months. The city enjoys an average of 10 to 14.4 hours of daylight throughout the year, showcasting the maximum daylight duration of 14.4 hours during June.
Aiken's temperature and weather patterns illustrate the city's humid subtropical climate. The absence of a dry season coupled with a high relative humidity contributes to consistent rainfall. The region's weather is characteristic of its classification, with hot, humid summers and mild-to-cool winters, with relatively minimal snowfall.
The best time to visit Aiken
Aiken's weather patterns suggest that the best time to visit should ideally be in the late spring to early summer months, more specifically from May to June. During this period, temperatures reach a comfortable 73.9°F (23.3°C) to 88.3°F (31.3°C). These months also boast the most extended daylight hours, between 13 to 14.4 hours per day, affording visitors plenty of sunshine to explore and enjoy outdoor activities.The worst time to visit Aiken
Adverse weather conditions would make December less appealing to visitors. Despite the festive season, December receives the heaviest rainfall of 3.15" (80mm) and experiences lower temperatures, between 37.9°F (3.3°C) to 56.7°F (13.7°C). Coupled with shorter daylight hours of 10 per day, this period may limit outdoor pursuits and dampen plans.Spring weather in Aiken
Spring in Aiken typically encompasses March through May, where temperatures gradually rise from 64.9°F (18.3°C) to 81.1°F (27.3°C). Rainfall remains constant, with precipitation levels averaging between 2.32" (59mm) to 2.68" (68mm). Aiken's spring offers an appealing balance of favorable weather conditions, with generous daylight hours from 12 to 13.9.Summer weather in Aiken
Statistically, summer temperatures in Aiken, between June to August, tend to fluctuate from 88.3°F (31.3°C) to 91°F (32.8°C), with minimal temperature drops on most days. A significant feature of the weather during the summer months is the prevalence of humidity, which often contributes to warmth and raises the relative humidity to around 71% to 72%. Despite the downward trend in rainfall during the summer, this season sees a slight increase in precipitation to 2.8" (71mm) in August.Autumn weather in Aiken
Autumn appears in Aiken starting in September and lasts until November. The temperatures cool over these months, transitioning from a high of 84.6°F (29.2°C) in September to a lower 62.8°F (17.1°C) in November. Autumn marks the decline of humidity to about 70% and experiences a gradual decrease in rainfall with the month of November registering a fall to 1.89" (48mm).Winter weather in Aiken
Winter in Aiken spans from December to February. During this phase, the city encounters the coolest temperatures of the year, scaling from a low of 37.9°F (3.3°C) in the heart of winter, January, and climbing to a relatively mild 58.3°F (14.6°C) by February. The winter months also are synonymous with the most ample amounts of rainfall in the city, exceeding 2.52" (64mm) in February. Meanwhile, snowfall is highly unusual, reaching a mere 0.28" (7mm) in December and January. The region's winter has shorter daylight hours, dimming to 10 from December to February.Weather in January
In Aiken, South Carolina, the year commences with January characterized by relatively cold temperatures. The region sees a balance of sunshine hours and cloud cover. Wind speeds are consistently moderate, contributing to an overall cool environment. Weather in January »Weather in February
As Aiken ushers in February, there is a gentle rise in temperatures. Accompanied by moderate humidity, the winter chill slowly starts to recede. A hint of spring starts to creep in with increased sunshine hours and relative cloudiness. Weather in February »Weather in March
The weather in Aiken, South Carolina in March, sees a notable rise in temperature as the city welcomes spring. There is an apparent increase in daylight hours, providing a pleasant ambiance. The cloud cover starts to reduce, allowing more sunlight to penetrate and warm the city. Weather in March »Weather in April
When April sets in, Aiken experiences a spell of warm weather. Longer days coupled with an increase in sunshine hours contribute to a rise in temperatures. Meanwhile, the wind speed remains relatively steady, offering cool breezes. Weather in April »Weather in May
May brings in summertime in Aiken, South Carolina. The striking feature of the month is the substantial hike in temperature. Concurrently, daylight and sunshine hours peak to cater to outdoor activities. The weather warms up considerably with temperatures fluctuating from 63.1°F (17.3°C) to 81.1°F (27.3°C). Weather in May »Weather in June
With the advent of June, Aiken continues to bask in the summer heat. The city enjoys the longest daylight hours of the year. The brightness of the sun and the accompanying warmth lend a buzz to the city's atmosphere. The temperature fluctuates between 70.3°F (21.3°C) and 88.3°F (31.3°C), making it one of the hottest months. Weather in June »Weather in July
July is the apex of summer in Aiken, South Carolina. The length of days starts to reduce slightly, but temperatures remain high. Despite peaking in the previous month, the sunshine hours still remain significant. July's temperature pendulum swings from 73.6°F (23.1°C) to an impressive 91°F (32.8°C), making it the hottest month. Weather in July »Weather in August
As August approaches, the heat in Aiken, South Carolina, begins to plateau. There is a slight dip in daylight hours; however, sunshine hours remain substantial. Even as the storm season approaches, the city continues to experience long, hot, and humid days. Weather in August »Weather in September
September marks the beginning of autumn in Aiken, with temperatures starting to fall slightly. The days shorten, and the amount of sunshine also drops. The onset of fall brings a change in the color scheme around the city, adding a unique charm to Aiken. Weather in September »Weather in October
With October, Aiken, South Carolina, fully embraces the autumn season. The days continue to shorten, painting the city with shades of fall. The shift from the heat of summer to the cooler autumn leaves a pleasant and crisp atmosphere. Weather in October »Weather in November
Aiken steps into November with a significant drop in temperature. The city prepares itself for the arrival of winter. The shortened daylight hours and decreasing sunshine mark the end of the fall season. Despite the cool weather with temperatures between 46.2°F (7.9°C) and 62.8°F (17.1°C), November experiences a reasonable amount of rainfall, about 1.89" (48mm). Weather in November »Weather in December
December ushers in winter in Aiken, South Carolina. The city is adorned with festive decorations under the cover of shorter days and colder temperatures. The month witnesses the least amount of daylight and sunshine hours. Temperatures can drop to as low as 42.4°F (5.8°C) and rise to a maximum of 56.7°F (13.7°C). Weather in December »Updated: Aug 28, 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
Aiken's January weather reaches an average high of 53.2°F (11.8°C) and an average low of 37.9°F (3.3°C), making it the coldest month.
In Aiken, South Carolina, during the entire year, the rain falls for 147.8 days and collects up to 28.31" (719mm) of precipitation.
Months with snowfall are January through March and December.
The months with the most snowfall are January and February, with an average 0.28" (7mm) of accumulated snow.
In Aiken, during the entire year, snow falls for 1.1 days and aggregates up to 0.71" (18mm) of snow.
The months with the lowest UV index are January and December, with an average maximum UV index of 3.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
In Aiken, snow does not fall in April through November.
With an average of 14h and 18min of daylight, June has the longest days of the year.
June through August, with an average maximum UV index of 7, are months with the highest UV index.
In Aiken, the peak temperatures are generally noted in July, averaging a high of 91°F (32.8°C) and a low of 73.6°F (23.1°C).
July and November, with an average relative humidity of 70%, are the least humid months.
July has the most sunshine of the year, with an average of 10.9h of sunshine.
The month with the least rainfall is September, when the rain falls for 12.1 days and typically collects 1.5" (38mm) of precipitation.
December is the most humid month in Aiken, with an average relative humidity of 75%.
December is the month with the most rainfall. Rain falls for 10.9 days and accumulates 3.15" (80mm) of precipitation.
December has the shortest days of the year, with an average of 10h and 0min of daylight.
With an average of 5.4h of sunshine, December has the least sunshine of the year.
Average temperature
Aiken, SC
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (53.2°F).
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure
Aiken, 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:
30.02"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
29.97"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed
Aiken, SC
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.6mph - Average wind speed in March:
8.5mph - Average wind speed in April:
8.6mph - Average wind speed in May:
7.2mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
6mph - Average wind speed in August:
5.6mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.1mph - Average wind speed in November:
7.4mph - Average wind speed in December:
7.8mph
The windiest months (with the highest average wind speed) are February and April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity
Aiken, SC
The month with the highest relative humidity is December (75%).
The months with the lowest relative humidity are July and November (70%).
Average rainfall
Aiken, SC
- Average rainfall in January:
1.97" - Average rainfall in February:
2.52" - Average rainfall in March:
2.32" - Average rainfall in April:
2.87" - Average rainfall in May:
2.68" - Average rainfall in June:
2.05"
The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days
Aiken, SC
- Average rainfall days in January:
10 days - Average rainfall days in February:
10.8 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
12.5 days - Average rainfall days in May:
14.6 days - Average rainfall days in June:
14.4 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
16.4 days - Average rainfall days in September:
12.1 days - Average rainfall days in October:
7.7 days - Average rainfall days in November:
7.7 days - Average rainfall days in December:
10.9 days
The month with the highest number of rainy days is July (17.4 days).
The months with the least rainy days are October and November (7.7 days).
Average snowfall
Aiken, SC
The months with the highest snowfall are January and February (0.28").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days
Aiken, SC
- Average snowfall days in January:
0.4 days - Average snowfall days in February:
0.3 days - Average snowfall days in March:
0.3 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:
0.1 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Aiken, SC
- Average daylight in January:
10h and 12min - 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 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - 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 42min - Average sunshine in February:
6h and 54min - Average sunshine in March:
7h and 24min - Average sunshine in April:
9h and 12min - Average sunshine in May:
10h and 6min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
10h and 54min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 36min - Average sunshine in October:
6h and 54min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days
Aiken, SC
- Average sunshine days in January:
19.8 days - Average sunshine days in February:
16.1 days - Average sunshine days in March:
16 days - Average sunshine days in April:
16.2 days - Average sunshine days in May:
14.7 days - Average sunshine days in June:
13 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
11.8 days - Average sunshine days in September:
16 days - Average sunshine days in October:
22 days - Average sunshine days in November:
21.2 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is October (22 days).
The month with the least sunshine days is July (10.8 days).
Average UV index
Aiken, SC
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover
Aiken, SC
The months with the most cloud cover are February and December (Cloud cover 41).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility
Aiken, 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).
