Climate and monthly weather forecast
Aiken, SC

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The natural formation of the oak canopies along the South Boundary Street in Aiken, South Carolina
The natural formation of the oak canopies along the South Boundary Street in Aiken, South Carolina

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 »
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Frequently asked questions

What are the coldest months in Aiken?

Aiken's coldest month, January, registers temperatures that range from a high of 53.2°F (11.8°C) to a low of 37.9°F (3.3°C).

How many days does it rain in Aiken?

In Aiken, during the entire year, the rain falls for 147.8 days and collects up to 28.31" (719mm) of precipitation.

When does it snow in Aiken?

January through March and December are months with snowfall in Aiken.

When does it snow the most in Aiken?

The months with the most snowfall in Aiken are January and February, with an average 0.28" (7mm) of accumulated snow.

How much does it snow in Aiken?

Throughout the year, in Aiken, there are 1.1 snowfall days, and 0.71" (18mm) of snow is accumulated.

When is the lowest UV index in Aiken?

January and December, with an average maximum UV index of 3, are months with the lowest UV index in Aiken, South Carolina.

When is Daylight Saving Time (DST) in Aiken?

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.

When it does not snow in Aiken?

April through November are months without snowfall.

When are the longest days in Aiken?

The month with the longest days in Aiken, South Carolina, is June, with an average of 14h and 18min of daylight.

When is the highest UV index in Aiken?

The months with the highest UV index are June through August, with an average maximum UV index of 7.

What month is the hottest in Aiken?

Aiken's warmest month, July, registers temperatures that range from a high of 91°F (32.8°C) to a low of 73.6°F (23.1°C).

What are the least humid months in Aiken?

The months with the lowest humidity in Aiken are July and November, with an average relative humidity of 70%.

What month has the most sunshine in Aiken?

The month with the most sunshine in Aiken, South Carolina, is July, with an average of 10.9h of sunshine.

What is the driest month in Aiken?

The month with the least rainfall in Aiken, South Carolina, is September, when the rain falls for 12.1 days and typically collects 1.5" (38mm) of precipitation.

What is the most humid month in Aiken?

With an average relative humidity of 75%, December is the most humid month in Aiken, South Carolina.

What is the rainiest month in Aiken?

December is the month with the most rainfall. Rain falls for 10.9 days and accumulates 3.15" (80mm) of precipitation.

What is the month with the shortest days in Aiken?

December has the shortest days of the year, with an average of 10h and 0min of daylight.

What is the month with the least sunshine in Aiken?

December has the least sunshine of the year, with an average of 5.4h of sunshine.

Average pressure
Aiken, SC

Average pressure - Aiken, SC

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).

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Average wind speed
Aiken, SC

Average wind speed - Aiken, SC

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).

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Average humidity
Aiken, SC

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%).

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Average rainfall
Aiken, SC

Average rainfall - Aiken, SC

The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is September (1.5").

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Average rainfall days
Aiken, SC

Average rainfall days - Aiken, SC

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).

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Average snowfall
Aiken, SC

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").

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Average snowfall days
Aiken, SC

Average snowfall days - Aiken, SC

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).

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Average daylight / Average sunshine
Aiken, SC

Average daylight / Average sunshine - Aiken, SC

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).

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).

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Average sunshine days
Aiken, SC

Average sunshine days - Aiken, SC

The month with the most sunshine days is October (22 days).
The month with the least sunshine days is July (10.8 days).

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Average visibility
Aiken, SC

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).

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Aiken, South Carolina, USA

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