May weather forecast
Hanahan, SC

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Weather in May

The warming trend that begins from March reaches its peak in May, setting the stage for the upcoming summer. The high temperatures of May soaring up to 81.3°F (27.4°C) make this the first genuinely warm month of the year in Hanahan. Residents and tourists can look forward to a variety of outdoor activities during this month, due to the warm temperatures and relatively long daylight hours. Transitioning from May to June sees a spike in rainfall, humidity, and even higher temperatures, indicating the start of the summer season. The lovely weather coupled with the colorful blossoming flora makes May an appealing time to be in Hanahan.

Temperature

With the start of May in Hanahan, the average high-temperature marginally shifts from April's 74.8°F (23.8°C) to a still moderately hot 81.3°F (27.4°C). May nights in Hanahan observe an average temperature dip to a refreshing 66°F (18.9°C).

Heat index

The average heat index in May is appraised at a hot 86°F (30°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
The heat index's values are generally associated with conditions in shade and light breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

In May, the average relative humidity is 75%.

Rainfall

In Hanahan, in May, during 15.6 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. Throughout the year, there are 172.6 rainfall days, and 39.13" (994mm) of precipitation is accumulated.

Snowfall

In Hanahan, snow does not fall in March through November.

Daylight

In Hanahan, South Carolina, the average length of the day in May is 13h and 52min.
On the first day of the month, sunrise is at 6:31 am and sunset at 8:02 pm. On the last day of May, sunrise is at 6:12 am and sunset at 8:23 pm EDT.

Sunshine

In May, the average sunshine is 10.2h.

UV index

The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: A daily high UV index of 6 in May leads to these guidelines:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

What are the temperatures in Hanahan in May?

The average high-temperature, in May, in Hanahan, is 81.3°F (27.4°C), while the average low-temperature is 66°F (18.9°C). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 86°F (30°C).

What is the average humidity in May in Hanahan?

In Hanahan, the average relative humidity in May is 75%.

How much does it rain in Hanahan in May?

In Hanahan, South Carolina, in May, during 15.6 rainfall days, 2.95" (75mm) of precipitation is typically accumulated.

When it does not snow in Hanahan?

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

How many hours of daylight does Hanahan have in May?

In May, the average day length is 13h and 52min.

When is the sunrise / sunset in May in Hanahan?

On the first day of May in Hanahan, South Carolina, sunrise is at 6:31 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:23 pm EDT.

How long on average sun shines in May in Hanahan?

In May, the average sunshine duration in Hanahan is 10.2h.

What is the UV index reading in May in Hanahan?

In May, the average daily maximum UV index in Hanahan, South Carolina, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
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
Hanahan, SC

Average temperature in May - Hanahan, SC
  • Average high temperature in May: 81.3°F

The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in May: 66°F

The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in May
Hanahan, SC

Average pressure in May - Hanahan, SC
  • Average pressure in May: 30.03"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).

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Average wind speed in May
Hanahan, SC

Average wind speed in May - Hanahan, SC
  • Average wind speed in May: 6.9mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in May
Hanahan, SC

Average humidity in May - Hanahan, SC
  • Average humidity in May: 75%

The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are January and March (72%).

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Average rainfall in May
Hanahan, SC

Average rainfall in May - Hanahan, SC
  • Average rainfall in May: 2.95"

The wettest month (with the highest rainfall) is August (6.22").
The driest month (with the least rainfall) is January (1.46").

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Average rainfall days in May
Hanahan, SC

Average rainfall days in May - Hanahan, SC
  • Average rainfall days in May: 15.6 days

The month with the highest number of rainy days is August (23.4 days).
The month with the least rainy days is November (8.2 days).

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Average snowfall in May
Hanahan, SC

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

The month with the highest snowfall is February (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in May
Hanahan, SC

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

The months with the highest number of snowfall days are January and February (0.3 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
Hanahan, SC

Average daylight in May / Average sunshine in May - Hanahan, 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 36min).

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Average sunshine days in May
Hanahan, SC

Average sunshine days in May - Hanahan, SC
  • Average sunshine days in May: 12.9 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is August (5.8 days).

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Average UV index in May
Hanahan, SC

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

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

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Average cloud cover in May
Hanahan, SC

Average cloud cover in May - Hanahan, SC
  • Average cloud cover in May: 31

The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are June and July (Cloud cover 27).

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Average visibility in May
Hanahan, SC

Average visibility in May - Hanahan, 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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Hanahan, South Carolina, USA

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