Swanzey (NH) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Swanzey.
Climate overview of Swanzey
The climate in Swanzey, New Hampshire, United States of America, is marked by large temperature swings across the seasons, ranging from 28°C (82°F) in July to 0°C (32°F) in January.
The city has a wet climate, receiving around 1216 mm (48 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and very cold winters. June is the wettest month. Sunshine peaks in July, when the city sees around 9.8 hours of sunshine per day.
Swanzey Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Swanzey - and find the best time to visit.
Monthly Temperature in Swanzey
In Swanzey, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 28°C (82°F) in July to a very cold 0°C (32°F) in January.
Nighttime temperatures range from 15°C (59°F) in July to -11°C (12°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Swanzey
Swanzey experiences significant rain/snowfall throughout the year, averaging 1216 mm (48 in) of precipitation annually. The amount of precipitation varies moderately throughout the year. The wettest month, June, sees around 130 mm (5.1 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, April, still receives a respectable 76 mm (3 in) of rainfall. For more details, please visit our Swanzey Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Swanzey
In Swanzey, summer days are longer and more sunny, with daily sunshine hours peaking at 9.8 hours in July. As the darker season arrives, the brightness of the sun becomes less. November sees a soft sun for only 4.2 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Swanzey by Month
The relative humidity is high throughout the year in Swanzey.
The city experiences its highest humidity in September, reaching 76%. In April, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Swanzey
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: February, March, September and November
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -11°C (12°F).
Frequently asked questions about the climate in Swanzey
What is the best time to visit Swanzey?
May typically offers the most optimal weather in Swanzey. In contrast, January, February, March, November and December tend to have less optimal conditions. Swanzey has warm summers and very cold winters.
What temperatures can I expect in Swanzey?
Daytime highs range from 0°C (32°F) in January to 28°C (82°F) in July. Nighttime lows range from -11°C (12°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Swanzey get?
Annual rainfall is around 1216 mm (48 in). June is the wettest month with 130 mm (5.1 in), while April is the driest with 76 mm (3 in).
How sunny is Swanzey?
Swanzey receives around 2,512 hours of sunshine per year. July is the sunniest month with 295 hours, while November is the cloudiest with just 127 hours. Overall, Swanzey enjoys abundant sunshine.
Swanzey 3-Day Forecast
Swanzey (NH) 3-Day Forecast
Swanzey on the map
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