Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In September, the average high-temperature registers at a still moderately hot 80.4°F (26.9°C), nearly identical to August's 85.1°F (29.5°C). During the month of September, the temperature generally drops to a low average of 67.1°F (19.5°C).Humidity
The average relative humidity in September is 78%.Rainfall
In September, the rain falls for 6.6 days. Throughout September, 0.63" (16mm) of precipitation is accumulated. Throughout the year, there are 98.1 rainfall days, and 8.15" (207mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Ocean temperature
In Columbia, the average seawater temperature in September is 78.6°F (25.9°C).Note: In water temperatures ranging between 77°F (25°C) and 84.2°F (29°C), activities such as swimming and diving become highly pleasurable for long durations.
Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:37 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:49 pm EDT.
Sunshine
The average sunshine in September is 9.5h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 5 in September transforms into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Heed this! UV intensity is much stronger when reflected off sand and water.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September in Columbia?
How much does it rain in September?
When it does not snow?
How warm is the water in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Columbia have in September?
What is the UV index intensity in September?
Average temperature in September
Columbia, NC
- Average high temperature in September: 80.4°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (48.6°F).
- Average low temperature in September: 67.1°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (35.1°F).
Average pressure in September
Columbia, NC
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Columbia, NC
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Columbia, NC
- Average humidity in September: 78%
The months with the highest relative humidity are May, August and December (79%).
The months with the lowest relative humidity are January, April and November (76%).
Average rainfall in September
Columbia, NC
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is August (1.18").
The driest months (with the least rainfall) are January, March and November (0.47").
Average rainfall days in September
Columbia, NC
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is July (13.6 days).
The month with the least rainy days is October (5.1 days).
Average snowfall in September
Columbia, NC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Columbia, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in September
Columbia, NC
- Average sea temperature in September: 78.6°F
The best month for swimming (with the highest average sea temperature) is August (81.9°F).
The coldest month (with the lowest average sea temperature) is February (55.2°F).
Average daylight in September /
Average sunshine in September
Columbia, NC
- Average daylight in September: 12h and 2min
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 September: 9h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in September
Columbia, NC
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is October (24.3 days).
The month with the least sunshine days is July (14.3 days).
Average UV index in September
Columbia, NC
- Average UV index in September: 5
The months with the highest UV index are June and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Columbia, NC
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 28).
Average visibility in September
Columbia, NC
- Average visibility in September: 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).
Columbia, North Carolina, USA
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