August weather forecastSeabrook, NH
August
Weather in August
August continues to ride the wave of Summer warmth in Seabrook, New Hampshire. Widely known for its warm yet pleasant weather, it makes for a perfect seaside retreat. Beach parties, barbecues, and camping under the stars are typical ways residents enjoy this month. August sees a slight drop in temperatures from July levels and the least cloud cover of the year, recorded at 29%. Prepare for a touch of showers as the month also sees a moderate amount of rainfall.Temperature
As Seabrook welcomes August, the average high-temperature is noted at a still warm 75.7°F (24.3°C), closely aligning with the preceding month. In Seabrook, the average nighttime temperature during August is an enjoyable 62.4°F (16.9°C).Humidity
In August, the average relative humidity is 78%.Rainfall
In Seabrook, during August, the rain falls for 13.1 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, in Seabrook, there are 146.5 rainfall days, and 27.52" (699mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Seabrook, New Hampshire.Daylight
In August, the average length of the day in Seabrook is 13h and 53min.On the first day of the month, sunrise is at 5:35 am and sunset at 8:04 pm. On the last day of August, sunrise is at 6:07 am and sunset at 7:19 pm EDT.
Sunshine
With an average of 10.7h of sunshine, August has the most sunshine of the year.UV index
The months with the highest UV index in Seabrook, New Hampshire, are July and August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 6 during August leads to these instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Seabrook, NH
- Average high temperature in August: 75.7°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 August: 62.4°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 August
Seabrook, NH
- Average pressure in August: 29.97"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 August
Seabrook, NH
- Average wind speed in August: 6.9mph
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 August
Seabrook, NH
- Average humidity in August: 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 August
Seabrook, NH
- Average rainfall in August: 2.05"
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 August
Seabrook, NH
- Average rainfall days in August: 13.1 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 August
Seabrook, NH
- Average snowfall in August: 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 August
Seabrook, NH
- Average snowfall days in August: 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 August /
Average sunshine in August
Seabrook, NH
- Average daylight in August: 13h and 54min
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 August: 10h and 42min
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 August
Seabrook, NH
- Average sunshine days in August: 15.9 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 August
Seabrook, NH
- Average UV index in August: 6
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 August
Seabrook, NH
- Average cloud cover in August: 29
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 August
Seabrook, NH
- Average visibility in August: 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).





