September weather forecastNorth Hampton, NH
September
Weather in September
September denotes a seasonal shift, as temperatures start to drop, signaling the onset of fall. The reduction in rainfall signifies drier conditions, encouraging outdoor explorations. The dip in sea temperature indicates the receding feasibility of water activities. The shortening of sunshine and daylight hours will likely require adjustments to daily routine. Even so, the consistent visibility across the days remains unhindered, adding simplicity in planning activities.Temperature
The onset of September in North Hampton is marked by a minor decrease in temperature, transitioning from a moderately hot 75.7°F (24.3°C) in August to a pleasant 69.4°F (20.8°C). During September, North Hampton's temperature averages to a mild 56.7°F (13.7°C) at night.Humidity
In September, the average relative humidity is 78%.Rainfall
September is the month with the least rainfall in North Hampton, New Hampshire. Rain falls for 11.5 days and accumulates 1.54" (39mm) of precipitation.Snowfall
In North Hampton, snow does not fall in May through September.Ocean temperature
In North Hampton, New Hampshire, in September, the average water temperature is 62.6°F (17°C).Note: Swimming in water at 62.6°F (17°C) is not a pleasurable experience for most. The task of managing breathing becomes more challenging as the water temperature descends from 69.8°F (21°C) to 59°F (15°C).
Daylight
In September, the average length of the day is 12h and 29min.On the first day of September in North Hampton, sunrise is at 6:08 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:25 pm EDT.
Sunshine
In September, the average sunshine in North Hampton is 8.5h.UV index
In North Hampton, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
North Hampton, 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
North Hampton, 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
North Hampton, 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
North Hampton, 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
North Hampton, 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
North Hampton, 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
North Hampton, 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
North Hampton, 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 sea temperature in September
North Hampton, NH
- Average sea temperature in September: 62.7°F
The best month for swimming (with the highest average sea temperature) is August (66.4°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).
Average daylight in September /
Average sunshine in September
North Hampton, NH
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- 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
North Hampton, 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
North Hampton, 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
North Hampton, 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
North Hampton, 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).
