Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Seabrook Beach features a humid continental climate (Dfb). Temperatures typically range between -1 °C (30 °F) and 22 °C (71 °F) through the year, but rarely can drop to -19 °C (-2 °F) or can rise to as high as 31 °C (88 °F). The average annual precipitation amounts to about 1239 mm (48.8 inches) and receives 124 rainy days on the 1 mm (0.04 inches) threshold annually. Seabrook Beach enjoys an average of 3005 hours of sunshine throughout the year, and daylight varies from 9 hours 2 minutes to 15 hours 18 minutes per day.
The warmest months in Seabrook Beach are June, July and August, with daily mean temperatures ranging from 18 to 22 °C (65 - 71 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 1 °C (30 - 34 °F) throughout the day. On average each year, Seabrook Beach experiences 31 days above 25 °C (77.0 °F) and 84 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 17°C (64°F) |
17°C (64°F) |
17°C (63°F) |
24°C (76°F) |
27°C (82°F) |
30°C (86°F) |
31°C (88°F) |
31°C (88°F) |
30°C (86°F) |
25°C (78°F) |
20°C (69°F) |
15°C (59°F) |
| Mean maximum | 12°C (54°F) |
13°C (56°F) |
15°C (58°F) |
18°C (65°F) |
26°C (79°F) |
27°C (81°F) |
30°C (86°F) |
29°C (85°F) |
27°C (81°F) |
23°C (74°F) |
19°C (66°F) |
14°C (57°F) |
| Average high | 2°C (36°F) |
3°C (38°F) |
6°C (42°F) |
11°C (51°F) |
16°C (61°F) |
21°C (71°F) |
25°C (76°F) |
25°C (77°F) |
21°C (71°F) |
16°C (61°F) |
9°C (49°F) |
4°C (39°F) |
| Daily mean | -1°C (30°F) |
-0°C (32°F) |
2°C (36°F) |
8°C (46°F) |
13°C (55°F) |
18°C (65°F) |
22°C (71°F) |
22°C (71°F) |
18°C (65°F) |
13°C (56°F) |
6°C (43°F) |
1°C (34°F) |
| Average low | -4°C (24°F) |
-4°C (26°F) |
-1°C (31°F) |
5°C (41°F) |
10°C (50°F) |
15°C (59°F) |
19°C (66°F) |
19°C (66°F) |
15°C (60°F) |
10°C (51°F) |
3°C (37°F) |
-2°C (29°F) |
| Mean minimum | -15°C (5°F) |
-13°C (8°F) |
-11°C (12°F) |
-0°C (32°F) |
5°C (41°F) |
10°C (50°F) |
15°C (59°F) |
14°C (58°F) |
10°C (50°F) |
4°C (39°F) |
-6°C (21°F) |
-11°C (13°F) |
| Minimum | -19°C (-2°F) |
-16°C (4°F) |
-14°C (8°F) |
-2°C (29°F) |
2°C (37°F) |
8°C (47°F) |
13°C (56°F) |
13°C (55°F) |
7°C (46°F) |
1°C (34°F) |
-12°C (11°F) |
-19°C (-1°F) |
Compare temperature, precipitation, sunshine, UV index in Seabrook Beach, New Hampshire, United States with other places around the world.
Seabrook Beach usually has the most precipitation in April, October and December, with an average of 11 rainy days and 139 mm (5.5 inches) of precipitation per month. The driest months in Seabrook Beach are January, August and September. On average, 76 mm (3.0 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 79 (3.1) | 98 (3.9) | 94 (3.7) | 143 (5.6) | 83 (3.3) | 88 (3.5) | 123 (4.8) | 71 (2.8) | 78 (3.1) | 142 (5.6) | 108 (4.3) | 133 (5.2) |
| Average precipitation days (≥ 1 mm) | 8 | 11 | 10 | 13 | 11 | 10 | 12 | 9 | 8 | 11 | 11 | 10 |
The sunniest months in Seabrook Beach are June, July and August, when the sun shines an average of 10 hours 53 minutes a day. Least sunny months in Seabrook Beach: January, February and December receive an average of 5 hours 35 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 150 | 183 | 255 | 245 | 295 | 330 | 335 | 336 | 284 | 220 | 193 | 175 |
| Mean daily daylight hours | 9h 23m | 10h 31m | 11h 57m | 13h 26m | 14h 40m | 15h 18m | 14h 57m | 13h 51m | 12h 26m | 10h 58m | 9h 41m | 9h 2m |
Seabrook Beach experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Seabrook Beach UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 2 | 4 | 5 | 7 | 9 | 10 | 9 | 9 | 7 | 5 | 3 | 2 |
Discover in-depth weather details for every month in Seabrook Beach. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Seabrook Beach's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.
Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.