May weather forecast
Santee, SC

Weather in May

May, the last month of the spring in Santee, is also a moderately hot month, with an average temperature varying between 81.1°F (27.3°C) and 63.1°F (17.3°C).

Temperature

In Santee, the average high-temperature in May marginally rises from a moderately hot 74.3°F (23.5°C) in April to a still warm 81.1°F (27.3°C). In Santee, the average low-temperature is 63.1°F (17.3°C).

Heat index

In May, the average heat index is estimated at a hot 86°F (30°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, pregnancy, differences in body mass, height, and shape). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

May, August, September and December, with an average relative humidity of 77%, are the most humid months.

Rainfall

In Santee, South Carolina, during 15.9 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. Throughout the year, there are 165.1 rainfall days, and 33.46" (850mm) of precipitation is accumulated.

Snowfall

In Santee, snow does not fall in March through December.

Daylight

In Santee, the average length of the day in May is 13h and 55min.
On the first day of May, sunrise is at 6:33 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 8:26 pm EDT.

Sunshine

In Santee, South Carolina, the average sunshine in May is 9.9h.

UV index

The average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in May interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. 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 wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in May in Santee?

In May, the average high-temperature 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', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 86°F (30°C).

What are the most humid months in Santee?

The months with the highest humidity in Santee, South Carolina, are May, August, September and December, with an average relative humidity of 77%.

What is the average humidity in May in Santee?

The average relative humidity in May in Santee is 77%.

How much does it rain in Santee in May?

In Santee, South Carolina, in May, during 15.9 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

When it does not snow in Santee?

In Santee, South Carolina, snow does not fall in March through December.

How many hours of daylight does Santee have in May?

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

When is the sunrise / sunset in May in Santee?

In May, on the first day of the month, sunrise is at 6:33 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 8:26 pm EDT.

How many hours of sunshine does Santee have in May?

The average sunshine duration in May is 9.9h.

What is the UV index intensity in May in Santee?

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

Average temperature in May
Santee, SC

Average temperature in May - Santee, SC
  • Average high temperature in May: 81.1°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 (54.9°F).

  • Average low temperature in May: 63.1°F

The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).

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Average pressure in May
Santee, SC

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in May
Santee, SC

Average wind speed in May - Santee, SC
  • Average wind speed in May: 6.8mph

The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in May
Santee, SC

Average humidity in May - Santee, SC
  • Average humidity in May: 77%

The months with the highest relative humidity are May, August, September and December (77%).
The months with the lowest relative humidity are January and November (72%).

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Average rainfall in May
Santee, SC

Average rainfall in May - Santee, SC
  • Average rainfall in May: 3.03"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is November (1.69").

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Average rainfall days in May
Santee, SC

Average rainfall days in May - Santee, SC
  • Average rainfall days in May: 15.9 days

The month with the highest number of rainy days is August (21 days).
The month with the least rainy days is November (7.3 days).

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Average snowfall in May
Santee, SC

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

The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in May
Santee, SC

Average snowfall days in May - Santee, 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 March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in May / Average sunshine in May - Santee, SC
  • Average daylight in May: 13h and 55min

The month with the longest days is June (Average daylight: 14h and 20min).
The month with the shortest days is December (Average daylight: 9h and 59min).

  • Average sunshine in May: 9h and 54min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in May
Santee, SC

Average sunshine days in May - Santee, SC
  • Average sunshine days in May: 13 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is August (7.9 days).

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Average UV index in May
Santee, SC

Average UV index in May - Santee, 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, February and December (UV index 3).

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Average cloud cover in May
Santee, SC

Average cloud cover in May - Santee, SC
  • Average cloud cover in May: 34

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 28).

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Average visibility in May
Santee, SC

Average visibility in May - Santee, 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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