May 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

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). Despite the warm weather, May experiences significant rainfall averaging to about 2.68" (68mm).

Temperature

Aiken experiences a minor temperature shift with the start of May, with average high-temperatures moving from a moderately hot 73.9°F (23.3°C) in April to a still warm 81.1°F (27.3°C). During May, Aiken observes a consistent average nighttime temperature of 63.1°F (17.3°C).

Heat index

May's mean heat index is evaluated at a hot 86°F (30°C). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

The average relative humidity in May in Aiken is 73%.

Rainfall

In Aiken, South Carolina, in May, it is raining for 14.6 days, with typically 2.68" (68mm) of accumulated precipitation. In Aiken, during the entire year, the rain falls for 147.8 days and collects up to 28.31" (719mm) of precipitation.

Snowfall

April through November are months without snowfall in Aiken.

Daylight

In May, the average length of the day is 13h and 55min.
On the first day of May in Aiken, South Carolina, sunrise is at 6:37 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:31 pm EDT.

Sunshine

In May, the average sunshine is 10.1h.

UV index

In May, the average daily maximum UV index in Aiken, South Carolina, is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 6 in May suggests the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

What are May temperatures in Aiken?

An average high-temperature, in May, in Aiken, is 81.1°F (27.3°C) and the average low-temperature is 63.1°F (17.3°C). In May, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 86°F (30°C).

What is the average humidity in May in Aiken?

The average relative humidity in May in Aiken, South Carolina, is 73%.

How many days does it rain in May in Aiken?

In Aiken, in May, during 14.6 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

When it does not snow in Aiken?

April through November are months without snowfall.

What is the average length of the day in May in Aiken?

In Aiken, the average day length in May is 13h and 55min.

What time are sunrise and sunset in May in Aiken?

On the first day of May in Aiken, sunrise is at 6:37 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:31 pm EDT.

How many hours of sunshine does Aiken have in May?

In Aiken, South Carolina, the average sunshine duration in May is 10.1h.

What is the UV index reading in May in Aiken?

In May, the average daily maximum UV index in Aiken is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Aiken, SC

Average temperature in May - Aiken, SC
  • Average high temperature in May: 81.1°F

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).

  • Average low temperature in May: 63.1°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).

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Average pressure in May
Aiken, SC

Average pressure in May - Aiken, SC
  • Average pressure in May: 30.03"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).

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Average wind speed in May
Aiken, SC

Average wind speed in May - Aiken, SC
  • Average wind speed in May: 7.2mph

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 in May
Aiken, SC

Average humidity in May - Aiken, SC
  • Average humidity in May: 73%

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 in May
Aiken, SC

Average rainfall in May - Aiken, SC
  • Average rainfall in May: 2.68"

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 in May
Aiken, SC

Average rainfall days in May - Aiken, SC
  • Average rainfall days in May: 14.6 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).

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Average snowfall in May
Aiken, SC

Average snowfall in May - Aiken, SC
  • Average snowfall in May: 0"

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 in May
Aiken, SC

Average snowfall days in May - Aiken, SC
  • Average snowfall days in May: 0 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).

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Average daylight in May /
Average sunshine in May
Aiken, SC

Average daylight in May / Average sunshine in May - Aiken, SC
  • Average daylight in May: 13h and 5min

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 May: 10h and 1min

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 in May
Aiken, SC

Average sunshine days in May - Aiken, SC
  • Average sunshine days in May: 14.7 days

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 UV index in May
Aiken, SC

Average UV index in May - Aiken, SC
  • Average UV index in May: 6

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).

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Average cloud cover in May
Aiken, SC

Average cloud cover in May - Aiken, SC
  • Average cloud cover in May: 32

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).

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Average visibility in May
Aiken, SC

Average visibility in May - Aiken, SC
  • Average visibility in May: 6mi

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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