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 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 Seabrook, the average high-temperature in September marginally drops from a moderately hot 75.7°F (24.3°C) in August to a pleasant 69.4°F (20.8°C). In Seabrook, the average low-temperature is 56.7°F (13.7°C).Humidity
In Seabrook, New Hampshire, the average relative humidity in September is 78%.Rainfall
The month with the least rainfall in Seabrook is September, when the rain falls for 11.5 days and typically collects 1.54" (39mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 6:08 am and sunset at 7:18 pm. On the last day of September, in Seabrook, sunrise is at 6:39 am and sunset at 6:27 pm EDT.
Sunshine
In Seabrook, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September in Seabrook is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the 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.
FAQ
What is the temperature in September in Seabrook?
What is the average humidity in September in Seabrook?
What is the driest month in Seabrook?
How many days does it rain in September in Seabrook?
When it does not snow in Seabrook?
Does it snow in Seabrook in September?
How many hours of daylight does Seabrook have in September?
When is the sunrise / sunset in September in Seabrook?
How many hours of sunshine does Seabrook have in September?
What is the UV index intensity in September in Seabrook?
Average temperature in September
Seabrook, NH
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in September
Seabrook, NH
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Seabrook, NH
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity in September
Seabrook, NH
- Average humidity in September: 78%
The months with the highest relative humidity are June and July (79%).
The month with the lowest relative humidity is November (74%).
Average rainfall in September
Seabrook, NH
- Average rainfall in September: 1.54"
The wettest months (with the highest rainfall) are October and December (2.83").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in September
Seabrook, NH
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in September
Seabrook, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Seabrook, NH
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (8.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Seabrook, NH
- Average daylight in September: 12h and 29min
The month with the longest days is June (Average daylight: 15h and 17min).
The month with the shortest days is December (Average daylight: 9h and 5min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Seabrook, NH
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is April (13.1 days).
Average UV index in September
Seabrook, NH
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Seabrook, NH
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Seabrook, NH
- 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).
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