Climate and monthly weather forecastSeabrook, NH
Climate and monthly weather forecast
The climate of Seabrook
Seabrook, located in New Hampshire, USA, experiences a humid continental climate, identified by the Köppen climate classification as having no dry season with a warm summer (Dfb). Nestled by the coast, Seabrook feels the influence of both the ocean and the distinctive four-season pattern typical in North America's northeastern states.Throughout the year, weather conditions exhibit considerable variation. Average high temperatures range from a crisp 32.5°F (0.3°C) in January to a comfortable 76.5°F (24.7°C) in July, while the average low swings from a chilly 21.9°F (-5.6°C) in January to a moderate 63.1°F (17.3°C) in July. The humidity tends to remain relatively steady throughout the year, typically falling between 74% and 79%.
The town also experiences ample precipitation throughout the year, falling primarily as rain but also as snow during the colder months. From a high of 2.83" (72mm) in October and December to a low of 1.54" (39mm) in September, rainfall presents a consistent pattern with minor fluctuations. The same holds true for snowfall, with amounts peaking at 4.02" (102mm) in February and dropping to none from May to September.
One can notice evident patterns in daylight hours, sunlight duration, and UV index, all of which peak during the summer months. The longest day offers 15.3 hours of daylight and 10.7 hours of sunshine in June, along with a UV index of 6. Winter, on the other hand, sees a minimum of 9.1 hours of daylight and 4.8 hours of sunshine in December, alongside a UV index of 2.
The best time to visit Seabrook
For those planning a trip to Seabrook, the summer months of June, July, and August offer the most favorable climate. The temperatures during these months are the warmest of the year, ranging from an average high of 69.4°F (20.8°C) to 76.5°F (24.7°C), and lows ranging from 56.1°F (13.4°C) to 63.1°F (17.3°C). Furthermore, these months provide the longest days with ample sunlit hours, allowing explorers vital time to indulge in outdoor activities.The worst time to visit Seabrook
Visitors might want to avoid the colder months of January and February. During this time, the temperatures dip to their lowest of the year, ranging between 21.9°F (-5.6°C) and 34.5°F (1.4°C), making it the least comfortable months for outdoor activities. Additionally, these months mark the peak of snowfall, ranging from 3.27" (83mm) to 4.02" (102mm), and shorter daylight hours, leading to less sunlit time for explorations.Spring weather in Seabrook
Spring in Seabrook, which spans from March to May, brings moderate temperatures alongside increasing daylight hours. Average high temperatures range from 40.5°F (4.7°C) in March to 61°F (16.1°C) in May, and average lows increase from a chilly 29.7°F (-1.3°C) to a more agreeable 48.4°F (9.1°C) in May. It is worth noting that rainfall increases during these months, offering plentiful hydration for the bloom of local flora.Summer weather in Seabrook
Summer, extending from June to August, is the mildest season in Seabrook. Average high temperatures are pleasant, at 69.4°F (20.8°C) in June, peaking at 76.5°F (24.7°C) in July, and maintaining a warm 75.7°F (24.3°C) in August. Correspondingly, the lows range from 56.1°F (13.4°C) to 63.1°F (17.3°C). These months offer an extended duration of daylight and sunshine, reaching a peak of 15.3 daylight hours and 10.7 sunshine hours in June.Autumn weather in Seabrook
Autumn, from September through November, showcases a decrease in temperatures, daylight, and sunshine duration. Average high temperatures drop from 69.4°F (20.8°C) in September to 47.8°F (8.8°C) in November, while lows descend progressively from 56.7°F (13.7°C) to 37.6°F (3.1°C). Despite the shorter days and cooler temperatures, autumn displays a mesmerizing array of changing foliage that's worthy of admiration.Winter weather in Seabrook
Winter sets in from December through February, bringing the coldest temperatures of the year to Seabrook. High temperatures oscillate between 32.5°F (0.3°C) and 38.3°F (3.5°C), while lows fluctuate between 21.9°F (-5.6°C) and 28.9°F (-1.7°C). This season also grants the shortest daylight duration and lowest amount of sunshine, promising a true wintry spectacle when combined with the consistent snowfall experienced during these months.Weather in January
The year starts in Seabrook, New Hampshire, with typical wintry weather, a keystone of the New England climate. Distinguished by its snow swathed landscape, this month exhibits the coldest temperatures of the year. Expect daytime highs hovering from 32.5°F (0.3°C) to 34.5°F (1.4°C) and chilly nights from 21.9°F (-5.6°C) to 23°F (-5°C). Weather in January »Weather in February
Though the calendar moves forward into February, the city remains firmly in the grasp of winter. February witnesses a slight increase in temperature compared with January. Feeling slightly less cold, a notable surge in the snowfall is observed with snow accumulating up to 4.02" (102mm) across the city. Weather in February »Weather in March
March marks the onset of Spring in Seabrook, New Hampshire, as temperatures and weather conditions start to change, subtly pointing to warmer days ahead. The shift from cold to mild weather is marked by a sharp fall in snowfall, from 4.02" (102mm) in February to 2.83" (72mm) this month. Weather in March »Weather in April
In April, Spring is fully present in Seabrook, New Hampshire, leaving the winter weather behind. The landscape turns from white to vibrant green as the rebirth of flora takes place. Gardens begin to brighten with daffodils, while cherry trees unleash their blossoms in April. Weather in April »Weather in May
May welcomes the full glory of Spring in Seabrook, New Hampshire, with warmer weather and blooming flowers. Outdoor activities become increasingly popular with residents taking advantage of the favourable conditions. May is also noted for its increase in daylight duration, allowing more time to enjoy the splendid outdoors. Weather in May »Weather in June
June introduces the vivid hues and high spirits of Summer in Seabrook, New Hampshire. The beach becomes an irresistible attraction, drawing locals and tourists alike. Blue skies, abundant sunshine, and warm weather make it the ideal period for outdoor adventures. Weather in June »Weather in July
July, the city's warmest month, exhibits what some locals call a comfortably hot Summer in Seabrook, New Hampshire. Exploring the coastal nature trails and indulging in water sports become popular pastimes. July witnesses its highest temperatures with averages peaking from 76.5°F (24.7°C) to 75.7°F (24.3°C). Weather in July »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. Weather in August »Weather in September
The arrival of September in Seabrook, New Hampshire, calls for a slow goodbye to Summer as the city begins to embrace Autumn’s mellow charm. It offers a gentle transition from the lingering summer heat to the freshness of the fall. Weather in September »Weather in October
In October, Fall takes over as the dominant season in Seabrook, New Hampshire, painting the landscape with vibrant colours. October represents a blend of sunny days and cool, crisp mornings, creating a pleasing remnant of summer warmth. Weather in October »Weather in November
November mirrors the quiet charm and serenity of late Autumn in Seabrook, New Hampshire. As the leaves fall from their branches, the city prepares to welcome the frosty charm of Winter. Locals exchange tank tops and shorts for sweaters and coats as the temperatures dip. Weather in November »Weather in December
December marks the return of Winter in Seabrook, New Hampshire, attracting fans of snow sports and cosy indoor activities alike. The holiday spirit is amplified by the white blanket of snow that covers the city. With both daylight and sunshine hours at their lowest, December calls for warmth and candles. Weather in December »Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, noted for its average high-temperature of 32.5°F (0.3°C) and an average low-temperature of 21.9°F (-5.6°C), is considered the coldest month in Seabrook, New Hampshire.
In Seabrook, New Hampshire, during the entire year, the rain falls for 146.5 days and collects up to 27.52" (699mm) of precipitation.
Months with snowfall in Seabrook are January through April, October through December.
In Seabrook, New Hampshire, during the entire year, snow falls for 33 days and aggregates up to 15.24" (387mm) of snow.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
February is the month with the most snowfall in Seabrook, New Hampshire. Snow falls for 8.3 days and accumulates 4.02" (102mm) of snow.
The months with the least sunshine are February and December, with an average of 4.8h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Seabrook, New Hampshire, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
May through September are months without snowfall in Seabrook.
June and July, with an average relative humidity of 79%, are most humid months in Seabrook, New Hampshire.
With an average of 15h and 18min of daylight, June has the longest days of the year in Seabrook.
July, known for its average high temperature of 76.5°F (24.7°C) and an average low temperature of 63.1°F (17.3°C), is the warmest month in Seabrook.
The months with the highest UV index in Seabrook are July and August, with an average maximum UV index of 6.
With an average of 10.7h of sunshine, August has the most sunshine of the year.
September is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.54" (39mm) of precipitation.
The wettest months in Seabrook, New Hampshire, are October and December, with an average 2.83" (72mm) of rainfall.
November is the least humid month, with an average relative humidity of 74%.
December has the shortest days of the year in Seabrook, New Hampshire, with an average of 9h and 6min of daylight.
Average temperature
Seabrook, NH
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).
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
Seabrook, NH
- Average pressure in January:
29.99"Hg - Average pressure in February:
29.98"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
30"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.03"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
Seabrook, NH
- Average wind speed in January:
12.1mph - Average wind speed in February:
11.6mph - Average wind speed in March:
11.1mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.9mph - Average wind speed in August:
6.9mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.3mph - Average wind speed in December:
11.3mph
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
Seabrook, NH
The months with the highest relative humidity are June and July (79%).
The month with the lowest relative humidity is November (74%).
Average rainfall
Seabrook, NH
- Average rainfall in January:
2.05" - Average rainfall in February:
2.17" - Average rainfall in March:
2.48" - Average rainfall in April:
2.48" - Average rainfall in May:
1.93" - Average rainfall in June:
2.48"
- Average rainfall in July:
2.2" - Average rainfall in August:
2.05" - Average rainfall in September:
1.54" - Average rainfall in October:
2.83" - Average rainfall in November:
2.48" - Average rainfall in December:
2.83"
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
Seabrook, NH
- Average rainfall days in January:
7.7 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
14.2 days - Average rainfall days in May:
15.4 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
14.1 days - Average rainfall days in August:
13.1 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
11.4 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
Seabrook, NH
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
Seabrook, NH
- Average snowfall days in January:
8.3 days - Average snowfall days in February:
8.3 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
1.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
1.7 days - Average snowfall days in December:
6.5 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 / Average sunshine
Seabrook, NH
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 18min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 6min
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 January:
5h and 6min - Average sunshine in February:
4h and 48min - Average sunshine in March:
5h and 48min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 30min - Average sunshine in June:
9h and 12min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 42min - Average sunshine in September:
8h and 30min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 48min
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
Seabrook, NH
- Average sunshine days in January:
16.1 days - Average sunshine days in February:
13.7 days - Average sunshine days in March:
13.6 days - Average sunshine days in April:
13.1 days - Average sunshine days in May:
14.3 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
14.8 days - Average sunshine days in August:
15.9 days - Average sunshine days in September:
16.6 days - Average sunshine days in October:
15.3 days - Average sunshine days in November:
16.9 days - Average sunshine days in December:
14.7 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
Seabrook, NH
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
Seabrook, NH
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
Seabrook, NH
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).
