August weather forecast
Castalia, NC

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Weather in August

August, the last month of the summer in Castalia, is another tropical month, with an average temperature fluctuating between 69.1°F (20.6°C) and 86.5°F (30.3°C).

Temperature

The commencement of August introduces an average high-temperature of a still hot 86.5°F (30.3°C), closely mirroring the preceding month. Nighttime temperature in Castalia lowers to an average of 69.1°F (20.6°C) in August.

Heat index

In August, the heat index is estimated at a sweltering 98.6°F (37°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In Castalia, North Carolina, the average relative humidity in August is 76%.

Rainfall

August is the month with the most rainfall. Rain falls for 17.8 days and accumulates 3.94" (100mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

In Castalia, the average length of the day in August is 13h and 29min.
On the first day of August in Castalia, sunrise is at 6:20 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 7:40 pm EDT.

Sunshine

In Castalia, the average sunshine in August is 10.1h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In August, the UV index of 6 transforms into the following advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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Frequently asked questions

How hot is it in Castalia in August?

An average high-temperature, in August, in Castalia, is 86.5°F (30.3°C) and the average low-temperature is 69.1°F (20.6°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 98.6°F (37°C).

What is the average humidity in August in Castalia?

The average relative humidity in August in Castalia is 76%.

What is the rainiest month in Castalia?

The month with the most rainfall in Castalia is August, when the rain falls for 17.8 days and typically aggregates up to 3.94" (100mm) of precipitation.

How much does it rain in Castalia in August?

In Castalia, during August, the rain falls for 17.8 days and regularly aggregates up to 3.94" (100mm) of precipitation.

When it does not snow in Castalia?

In Castalia, North Carolina, snow does not fall in April through November.

How many hours of daylight does Castalia have in August?

In Castalia, North Carolina, the average day length in August is 13h and 29min.

When is the sunrise / sunset in August in Castalia?

In August, on the first day of the month, sunrise is at 6:20 am and sunset at 8:17 pm. On the last day of the month, in Castalia, sunrise is at 6:43 am and sunset at 7:40 pm EDT.

How many hours of sunshine does Castalia have in August?

The average sunshine duration in August in Castalia, North Carolina, is 10.1h.

When is the highest UV index in Castalia?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in August in Castalia?

The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's 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 August
Castalia, NC

Average temperature in August - Castalia, NC
  • Average high temperature in August: 86.5°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (47.7°F).

  • Average low temperature in August: 69.1°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

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Average pressure in August
Castalia, NC

Average pressure in August - Castalia, NC
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in August
Castalia, NC

Average wind speed in August - Castalia, NC
  • Average wind speed in August: 5.6mph

The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in August
Castalia, NC

Average humidity in August - Castalia, NC
  • Average humidity in August: 76%

The month with the highest relative humidity is September (78%).
The months with the lowest relative humidity are January, March, April and November (74%).

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Average rainfall in August
Castalia, NC

Average rainfall in August - Castalia, NC
  • Average rainfall in August: 3.94"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is October (2.13").

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Average rainfall days in August
Castalia, NC

Average rainfall days in August - Castalia, NC
  • Average rainfall days in August: 17.8 days

The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is November (8.6 days).

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Average snowfall in August
Castalia, NC

Average snowfall in August - Castalia, NC
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.54").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in August
Castalia, NC

Average snowfall days in August - Castalia, NC
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Castalia, NC

Average daylight in August / Average sunshine in August - Castalia, NC
  • Average daylight in August: 13h and 3min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

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Average sunshine days in August
Castalia, NC

Average sunshine days in August - Castalia, NC
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is October (20 days).
The month with the least sunshine days is July (9.8 days).

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Average UV index in August
Castalia, NC

Average UV index in August - Castalia, NC
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in August
Castalia, NC

Average cloud cover in August - Castalia, NC
  • Average cloud cover in August: 35

The months with the most cloud cover are February and March (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 32).

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Average visibility in August
Castalia, NC

Average visibility in August - Castalia, NC
  • Average visibility in August: 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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Castalia, North Carolina, USA

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