August weather forecastSunapee, NH
August
Weather in August
As August arrives in Sunapee, the summer heat continues, but with a slight decrease from July's peak. The precipitation decreases, leading to drier conditions which are characteristic of late summer. The town basks under the warmth of the Sunapee sun, inviting outdoor explorations and water activities. Despite the sign of summers nearing its end, August presents a delightful warmth to enjoy. August culminates with a noted drop in night temperatures, indicating the onset of autumn.Temperature
The transition into August shows a subtle variation to a still moderately hot 76.6°F (24.8°C) from July's 78.8°F (26°C) in the average high-temperature. The nighttime temperature, during August, averages of 55.6°F (13.1°C).Humidity
The average relative humidity in August is 78%.Rainfall
In Sunapee, in August, during 15.3 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Sunapee, during the entire year, the rain falls for 153.2 days and collects up to 29.92" (760mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 55min.On the first day of August, sunrise is at 5:39 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 7:24 pm EDT.
Sunshine
August has the most sunshine of the year, with an average of 10.1h of sunshine.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 5 in August translates into the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sunapee, NH
- Average high temperature in August: 76.6°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in August: 55.6°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in August
Sunapee, NH
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Sunapee, NH
- Average wind speed in August: 5mph
The windiest months (with the highest average wind speed) are January, February, March and April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in August
Sunapee, NH
- Average humidity in August: 78%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (75%).
Average rainfall in August
Sunapee, NH
- Average rainfall in August: 2.09"
The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in August
Sunapee, NH
- Average rainfall days in August: 15.3 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in August
Sunapee, NH
- Average snowfall in August: 0"
The month with the highest snowfall is February (11.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Sunapee, NH
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Sunapee, NH
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in August: 10h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in August
Sunapee, NH
- Average sunshine days in August: 13.7 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is February (11.3 days).
Average UV index in August
Sunapee, NH
- Average UV index in August: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in August
Sunapee, NH
- Average cloud cover in August: 36
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in August
Sunapee, NH
- Average visibility in August: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).





