September weather forecast and climate
Brunswick, NC

September, the first month of the autumn, in Brunswick, is still a warm month, with average temperature fluctuating between 66.6°F (19.2°C) and 82.6°F (28.1°C).

Temperature

In Brunswick, North Carolina, the average high-temperature is practically the same as in August - a moderately hot 82.6°F (28.1°C). In Brunswick, the average low-temperature is 66.6°F (19.2°C).

Heat index

The average heat index in September is estimated at a tropical 90°F (32.2°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, pregnancy, wind), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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, June, August and September, with an average relative humidity of 79%, are most humid months.

Rainfall

In Brunswick, in September, it is raining for 14.7 days, with typically 2.76" (70mm) of accumulated precipitation. In Brunswick, during the entire year, the rain falls for 161.1 days and collects up to 25.75" (654mm) of precipitation.

Snowfall

In Brunswick snow does not fall in March through December.

Daylight

The average length of the day is 12.4h.

Sunshine

In Brunswick, the average sunshine is 9.3h.

UV index

In Brunswick, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 in September interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for 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.

What is the temperature in September in Brunswick?

The average high-temperature, in September, in Brunswick, is 82.6°F (28.1°C), while the average low-temperature is 66.6°F (19.2°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that combines air temperature and relative humidity, in September is estimated at 90°F (32.2°C).

What is the most humid month in Brunswick?

May, June, August and September, with an average relative humidity of 79%, are most humid months in Brunswick.

What is the average humidity in September in Brunswick?

In Brunswick, the average relative humidity in September is 79%.

How many days does it rain in September in Brunswick?

In Brunswick, North Carolina, in September, it is raining for 14.7 days, with typically 2.76" (70mm) of accumulated precipitation.

When it does not snow in Brunswick?

In Brunswick snow does not fall in March through December.

What is the average length of the day in September in Brunswick?

In Brunswick, the average length of the day in September is 12.4h.

How many hours of sunshine does Brunswick have in September?

The average sunshine in September in Brunswick, North Carolina, is 9.3h.

What is the UV index reading in September in Brunswick?

In September, the average daily maximum UV index in Brunswick, North Carolina, is 6. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays.
Average temperature in September - Brunswick, NC
  • Average high temperature in September: 28.1°C

The warmest month (with the highest average high temperature) is July (31.6°C).
The month with the lowest average high temperature is January (11.2°C).

  • Average low temperature in September: 19.2°C

The month with the highest average low temperature is July (22.4°C).
The coldest month (with the lowest average low temperature) is January (2.4°C).

Average pressure in September - Brunswick, NC
  • Average pressure in September: 1016.1mbar

Months with the highest atmospheric pressure are January and November (1020.4mbar).
The month with the lowest atmospheric pressure is June (1014.7mbar).

Average wind speed in September - Brunswick, NC
  • Average wind speed in September: 10.7km/h

The windiest month (with the highest average wind speed) is April (13.7km/h).
The calmest month (with the lowest average wind speed) is August (9.3km/h).

Average humidity in September - Brunswick, NC
  • Average humidity in September: 79%

Months with the highest relative humidity are May, June, August and September (79%).
The month with the lowest relative humidity is January (73%).

Average rainfall in September - Brunswick, NC
  • Average rainfall in September: 70mm

The wettest month (with the highest rainfall) is August (96mm).
The driest month (with the least rainfall) is January (22mm).

Average rainfall days in September - Brunswick, NC
  • Average rainfall days in September: 14.7 days

The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in September - Brunswick, NC
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (5mm).
Months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in September - Brunswick, NC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.6 days).
Months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in September / Average sunshine in September - Brunswick, NC
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 9.3h

The month with the most sunshine is July (Average sunshine: 10.8h).
Months with the least sunshine are January and December (Average sunshine: 5.6).

Average sunshine days in September - Brunswick, NC
  • Average sunshine days in September: 12.5 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (6.8 days).

Average UV index in September - Brunswick, NC
  • Average UV index in September: 6

Months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in September - Brunswick, NC
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in September - Brunswick, NC
  • Average visibility in September: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).