April weather forecast
Irmo, SC

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Weather in April

In April, the true essence of spring is reflected in the weather with temperatures rising on a consistent basis. This time of the year is characterized by abundant sunshine and clear skies, making it perfect for outdoor adventures. The rainfall for April stands at 2.64" (67mm), slightly more compared to March, hinting at a moister environment. Nonetheless, even with the rain, April is a lovely time to experience Irmo’s weather with ample sunlit days. Heading towards May, expect further rise in temperature, pointing towards the onset of summer.

Temperature

April marks a rise in the average high-temperature, moving from March's enjoyable 63.9°F (17.7°C) to a moderately hot 73.4°F (23°C). April brings an average low-temperature of 54.9°F (12.7°C) to Irmo.

Humidity

In Irmo, the average relative humidity in April is 72%.

Rainfall

In Irmo, in April, it is raining for 13.1 days, with typically 2.64" (67mm) of accumulated precipitation. In Irmo, during the entire year, the rain falls for 147.8 days and collects up to 28.23" (717mm) of precipitation.

Snowfall

In Irmo, South Carolina, snow does not fall in April through November.

Daylight

In Irmo, the average length of the day in April is 13h and 4min.
On the first day of the month, sunrise is at 7:10 am and sunset at 7:45 pm. On the last day of April, sunrise is at 6:35 am and sunset at 8:08 pm EDT.

Sunshine

In April, the average sunshine is 9.2h.

UV index

In Irmo, the average daily maximum UV index in April is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 5 in April converts into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.

Frequently asked questions

What is the average April temperature?

In Irmo, 73.4°F (23°C) is the average high-temperature and 54.9°F (12.7°C) is the average low-temperature during April.

What is the average humidity in April?

In April, the average relative humidity is 72%.

How many days does it rain in April?

In Irmo, South Carolina, during April, the rain falls for 13.1 days and regularly aggregates up to 2.64" (67mm) of precipitation.

When it does not snow?

In Irmo, snow does not fall in April through November.

Does it snow in April?

In April, it doesn't snow. March is the latest month when it typically snows.

What is the average length of the day in April?

The average day length in April is 13h and 4min.

When is the sunrise / sunset in April?

In April, on the first day of the month, sunrise is at 7:10 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 8:08 pm EDT.

How long on average sun shines in April?

The average sunshine duration in April is 9.2h.

How high is the UV index in April?

In April, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to 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 April
Irmo, SC

Average temperature in April - Irmo, SC
  • Average high temperature in April: 73.4°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (52.3°F).

  • Average low temperature in April: 54.9°F

The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).

Average pressure in April
Irmo, SC

Average pressure in April - Irmo, SC
  • Average pressure in April: 30.02"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 in April
Irmo, SC

Average wind speed in April - Irmo, SC
  • Average wind speed in April: 8.3mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in April
Irmo, SC

Average humidity in April - Irmo, SC
  • Average humidity in April: 72%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (70%).

Average rainfall in April
Irmo, SC

Average rainfall in April - Irmo, SC
  • Average rainfall in April: 2.64"

The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is September (1.54").

Average rainfall days in April
Irmo, SC

Average rainfall days in April - Irmo, SC
  • Average rainfall days in April: 13.1 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is October (7.8 days).

Average snowfall in April
Irmo, SC

Average snowfall in April - Irmo, SC
  • Average snowfall in April: 0"

The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in April
Irmo, SC

Average snowfall days in April - Irmo, SC
  • Average snowfall days in April: 0 days

The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in April /
Average sunshine in April
Irmo, SC

Average daylight in April / Average sunshine in April - Irmo, SC
  • Average daylight in April: 13h and 1min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in April: 9h 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 30min).

Average sunshine days in April
Irmo, SC

Average sunshine days in April - Irmo, SC
  • Average sunshine days in April: 15.5 days

The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in April
Irmo, SC

Average UV index in April - Irmo, SC
  • Average UV index in April: 5

The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in April
Irmo, SC

Average cloud cover in April - Irmo, SC
  • Average cloud cover in April: 33

The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 28).

Average visibility in April
Irmo, SC

Average visibility in April - Irmo, SC
  • Average visibility in April: 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).

Irmo, South Carolina, USA

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