Columbia
South Carolina, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Columbia, SC

The US State House of South Carolina, in Columbia, with the Wade Hampton Statue
The US State House of South Carolina, in Columbia, with the Wade Hampton Statue
The last month of the spring, May, is also a moderately hot month in Columbia, South Carolina, with temperature in the range of an average high of 81.3°F (27.4°C) and an average low of 63.1°F (17.3°C).

Temperature

In Columbia, South Carolina, the average high-temperature marginally rises, from a moderately hot 73.9°F (23.3°C) in April, to a still warm 81.3°F (27.4°C). The average low-temperature, in May, is 63.1°F (17.3°C).

Heat index

The average heat index in May is calculated to 85.8°F (29.9°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, metabolic differences, wind, and pregnancy affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in Columbia is 73%.

Rainfall

In May, in Columbia, the rain falls for 13.8 days. Throughout May, 2.32" (59mm) of precipitation is accumulated. Throughout the year, in Columbia, South Carolina, there are 141.3 rainfall days, and 25.28" (642mm) of precipitation is accumulated.

Snowfall

In Columbia, South Carolina, snow does not fall in March through November.

Daylight

In May, the average length of the day in Columbia, South Carolina, is 13.9h.

Sunshine

In May, the average sunshine in Columbia is 9.8h.

UV index

In Columbia, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 in May transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in May in Columbia?

In Columbia, South Carolina, in May, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 63.1°F (17.3°C). The average heat index (a.k.a. 'feels like', 'real feel'), that takes the relative humidity and factores it into the air temperature reading, in May is calculated to 85.8°F (29.9°C).

What is the average humidity in May in Columbia?

In Columbia, the average relative humidity in May is 73%.

How many days does it rain in May in Columbia?

In Columbia, in May, it is raining for 13.8 days, with typically 2.32" (59mm) of accumulated precipitation.

When it does not snow in Columbia?

March through November are months without snowfall.

How many hours of daylight does Columbia have in May?

The average length of the day in May in Columbia is 13.9h.

How long on average sun shines in May in Columbia?

In Columbia, South Carolina, the average sunshine in May is 9.8h.

What is the UV index intensity in May in Columbia?

In Columbia, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in May - Columbia, SC
  • Average high temperature in May: 27.4°C

The warmest month (with the highest average high temperature) is July (33.1°C).
The month with the lowest average high temperature is January (11.6°C).

  • Average low temperature in May: 17.3°C

The month with the highest average low temperature is July (23.2°C).
The coldest month (with the lowest average low temperature) is January (3.3°C).

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

The month with the highest relative humidity is December (74%).
Months with the lowest relative humidity are January, July and November (69%).

Average rainfall in May - Columbia, SC
  • Average rainfall in May: 59mm

The wettest month (with the highest rainfall) is December (74mm).
The driest month (with the lowest rainfall) is September (37mm).

Average rainfall days in May - Columbia, SC
  • Average rainfall days in May: 13.8 days

The month with the highest number of rainy days is July (16.3 days).
The month with the lowest number of rainy days is October (7.3 days).

Average snowfall in May - Columbia, SC
  • Average snowfall in May: 0mm

The month with the highest snowfall is February (12mm).
Months with the lowest snowfall are March, April, May, June, July, August, September, October and November (0mm).

Average snowfall days in May - Columbia, SC
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (0.3 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in May / Average sunshine in May - Columbia, SC
  • Average daylight in May: 13.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in May: 9.8h

The month with most sunshine is July (Average sunshine: 10.7h).
The month with least sunshine is December (Average sunshine: 5.3h).

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

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, February and December (UV index 3).