May weather forecast
Otranto, SC

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Weather in May

The last month of the spring, May, is also a moderately hot month in Otranto, South Carolina, with an average temperature fluctuating between 81.3°F (27.4°C) and 66°F (18.9°C).

Temperature

Otranto's weather in May shows a minor rise in the average high-temperature, moving slightly up from April's 74.8°F (23.8°C) to a still warm 81.3°F (27.4°C). Otranto, during May nights, observes an average temperature of 66°F (18.9°C).

Heat index

May's mean heat index is calculated to be a hot 86°F (30°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.

Humidity

In May, the average relative humidity is 75%.

Rainfall

In May, in Otranto, South Carolina, the rain falls for 15.6 days. Throughout May, 2.95" (75mm) of precipitation is accumulated. Throughout the year, there are 172.6 rainfall days, and 39.13" (994mm) of precipitation is accumulated.

Snowfall

March through November are months without snowfall.

Daylight

In Otranto, 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, in Otranto, sunrise is at 6:12 am and sunset at 8:23 pm EDT.

Sunshine

In Otranto, South Carolina, the average sunshine in May is 10.2h.

UV index

In Otranto, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, a regular UV index of 6 translates into these guidelines:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

The high-temperature, in May, in Otranto, is 81.3°F (27.4°C), while the low-temperature averages to 66°F (18.9°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, in May is calculated to be 86°F (30°C).

What is the average humidity in May?

The average relative humidity in May is 75%.

How many days does it rain in May?

In Otranto, in May, it is raining for 15.6 days, with typically 2.95" (75mm) of accumulated precipitation.

When it does not snow?

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

What is the average length of the day in May?

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

When are sunrise and sunset in May?

On the first day of May, 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 Otranto, the average sunshine duration in May is 10.2h.

What is the UV index reading in May?

In Otranto, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability 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 May
Otranto, SC

Average temperature in May - Otranto, 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).

Average pressure in May
Otranto, SC

Average pressure in May - Otranto, 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).

Average wind speed in May
Otranto, SC

Average wind speed in May - Otranto, 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).

Average humidity in May
Otranto, SC

Average humidity in May - Otranto, 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%).

Average rainfall in May
Otranto, SC

Average rainfall in May - Otranto, 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").

Average rainfall days in May
Otranto, SC

Average rainfall days in May - Otranto, 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).

Average snowfall in May
Otranto, SC

Average snowfall in May - Otranto, 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").

Average snowfall days in May
Otranto, SC

Average snowfall days in May - Otranto, 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).

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

Average daylight in May / Average sunshine in May - Otranto, 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).

Average sunshine days in May
Otranto, SC

Average sunshine days in May - Otranto, 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).

Average UV index in May
Otranto, SC

Average UV index in May - Otranto, 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).

Average cloud cover in May
Otranto, SC

Average cloud cover in May - Otranto, 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).

Average visibility in May
Otranto, SC

Average visibility in May - Otranto, 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).

Otranto, South Carolina, USA

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