May weather forecast
Sandy, SC

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Weather in May

May, the last month of the spring in Sandy, is also a moderately hot month, with an average temperature varying between 80.8°F (27.1°C) and 66.7°F (19.3°C).

Temperature

As May arrives, a slight rise in the average high-temperature is observed, moving from 74.1°F (23.4°C) in April to a still moderately hot 80.8°F (27.1°C). An average nighttime temperature of 66.7°F (19.3°C) is observed in Sandy during May.

Heat index

May's mean heat index is appraised at 84.2°F (29°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.
Consider that heat index readings are for situations in the shade and light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.

Humidity

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

Rainfall

In May, in Sandy, South Carolina, the rain falls for 13.4 days. Throughout May, 1.42" (36mm) of precipitation is accumulated. Throughout the year, in Sandy, there are 154.4 rainfall days, and 23.43" (595mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Sandy, the average length of the day in May is 13h and 52min.
On the first day of the month, sunrise is at 6:32 am and sunset at 8:02 pm. On the last day of May, sunrise is at 6:13 am and sunset at 8:23 pm EDT.

Sunshine

In Sandy, the average sunshine in May is 10.4h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index in Sandy. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 7 in May, converts into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

What is the usual temperature for Sandy in May?

The high-temperature, in May, in Sandy, is 80.8°F (27.1°C), while the low-temperature averages to 66.7°F (19.3°C). In May, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 84.2°F (29°C).

What is the average humidity in May in Sandy?

In Sandy, South Carolina, the average relative humidity in May is 75%.

How much does it rain in Sandy in May?

In Sandy, during May, the rain falls for 13.4 days and regularly aggregates up to 1.42" (36mm) of precipitation.

When it does not snow in Sandy?

March through November are months without snowfall in Sandy, South Carolina.

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

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

When is the sunrise / sunset in May in Sandy?

In May, on the first day of the month, sunrise is at 6:32 am and sunset at 8:02 pm. On the last day of the month, in Sandy, sunrise is at 6:13 am and sunset at 8:23 pm EDT.

How many hours of sunshine does Sandy have in May?

In May, the average sunshine duration in Sandy is 10.4h.

When is the highest UV index in Sandy?

The months with the highest UV index in Sandy, South Carolina, are May through August, with an average maximum UV index of 7.

What is the UV index reading in May in Sandy?

In May, the average daily maximum UV index in Sandy, South Carolina, is 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Sandy, SC

Average temperature in May - Sandy, SC
  • Average high temperature in May: 80.8°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in May: 66.7°F

The month with the highest average low temperature is July (76.5°F).
The coldest month (with the lowest average low temperature) is January (42.8°F).

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Average pressure in May
Sandy, SC

Average pressure in May - Sandy, 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 (29.98"Hg).

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Average wind speed in May
Sandy, SC

Average wind speed in May - Sandy, SC
  • Average wind speed in May: 7.5mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in May
Sandy, SC

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

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

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Average rainfall in May
Sandy, SC

Average rainfall in May - Sandy, SC
  • Average rainfall in May: 1.42"

The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in May
Sandy, SC

Average rainfall days in May - Sandy, SC
  • Average rainfall days in May: 13.4 days

The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is November (6.9 days).

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Average snowfall days in May
Sandy, SC

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

The month with the highest number of snowfall days is December (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
Sandy, SC

Average daylight in May / Average sunshine in May - Sandy, 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 2min

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
Sandy, SC

Average sunshine days in May - Sandy, SC
  • Average sunshine days in May: 15.8 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (6.1 days).

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Average UV index in May
Sandy, SC

Average UV index in May - Sandy, SC
  • Average UV index in May: 7

The months with the highest UV index are May, 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
Sandy, SC

Average cloud cover in May - Sandy, SC
  • Average cloud cover in May: 29

The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are June and July (Cloud cover 26).

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Average visibility in May
Sandy, SC

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

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