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 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
Welcoming September, Hatteras notes an average high-temperature of a still moderately hot 77.9°F (25.5°C), nearly consistent with August's 81.1°F (27.3°C). Nighttime readings during September register a minimal drop from daytime highs, averaging at a still warm 75.2°F (24°C).Humidity
In Hatteras, the average relative humidity in September is 77%.Rainfall
In September, in Hatteras, North Carolina, the rain falls for 9 days. Throughout September, 0.55" (14mm) of precipitation is accumulated. Throughout the year, in Hatteras, North Carolina, there are 100.9 rainfall days, and 8.58" (218mm) of precipitation is accumulated.Snowfall
In Hatteras, snow does not fall in April through November.Ocean temperature
In Hatteras, in September, the average water temperature is 78.8°F (26°C).Note: For swimming, diving, and similar activities, the water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered delightful, allowing for extended periods of enjoyment without discomfort.
Daylight
In September, the average length of the day is 12h and 23min.On the first day of September in Hatteras, sunrise is at 6:35 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:47 pm EDT.
Sunshine
In Hatteras, the average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index in Hatteras is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 6 in September suggests the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. 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. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Stay aware! UV radiation is magnified when reflecting off sand and water.
Frequently asked questions
What is the usual temperature for Hatteras in September?
What is the average humidity in September in Hatteras?
How many days does it rain in September in Hatteras?
When it does not snow in Hatteras?
What is the ocean temperature in September in Hatteras?
How many hours of daylight does Hatteras have in September?
What time are sunrise and sunset in September in Hatteras?
How many hours of sunshine does Hatteras have in September?
What is the UV index reading in September in Hatteras?
Average temperature in September
Hatteras, NC
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (54.5°F).
- Average low temperature in September: 75.2°F
The month with the highest average low temperature is July (78.4°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure in September
Hatteras, NC
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January, November and December (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Hatteras, NC
- Average wind speed in September: 13.4mph
The windiest month (with the highest average wind speed) is March (17mph).
The calmest month (with the lowest average wind speed) is August (12mph).
Average humidity in September
Hatteras, NC
- Average humidity in September: 77%
The months with the highest relative humidity are May, June and July (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Hatteras, NC
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is August (1.06").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in September
Hatteras, NC
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is February (5.6 days).
Average snowfall days in September
Hatteras, NC
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January, February, March and December (0.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Hatteras, NC
- Average sea temperature in September: 79°F
The best months for swimming (with the highest average sea temperature) are July and August (81°F).
The coldest month (with the lowest average sea temperature) is February (61°F).
Average daylight in September /
Average sunshine in September
Hatteras, NC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in September
Hatteras, NC
- Average sunshine days in September: 16 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in September
Hatteras, NC
- Average UV index in September: 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 September
Hatteras, NC
- Average cloud cover in September: 32
The month with the most cloud cover is March (Cloud cover 43).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in September
Hatteras, 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).
Hatteras, North Carolina, USA
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