Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The beginning of August records an average high-temperature of a still warm 75.9°F (24.4°C), marking a negligible difference from July's 76.8°F (24.9°C). Throughout August, Chatham registers a distinct decrease from daytime highs, reaching an average low of 53.2°F (11.8°C).Humidity
The average relative humidity in August in Chatham is 79%.Rainfall
In Chatham, during August, the rain falls for 14.1 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 158 rainfall days, and 18.58" (472mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 58min.On the first day of the month, sunrise is at 5:32 am and sunset at 8:08 pm. On the last day of August, in Chatham, sunrise is at 6:06 am and sunset at 7:21 pm EDT.
Sunshine
The month with the most sunshine in Chatham is August, with an average of 10.1h of sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 5 in August translates into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Minimize direct exposure to the Sun during midday when its radiation is at its peak. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average August temperature in Chatham?
What is the average humidity in August in Chatham?
How many days does it rain in August in Chatham?
When it does not snow in Chatham?
What is the average length of the day in August in Chatham?
What time are sunrise and sunset in August in Chatham?
What month has the most sunshine in Chatham?
How many hours of sunshine does Chatham have in August?
What is the month with the highest UV index in Chatham?
How high is the UV index in August in Chatham?
Average temperature in August
Chatham, NH
- Average high temperature in August: 75.9°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in August: 53.2°F
The month with the highest average low temperature is July (55.8°F).
The coldest month (with the lowest average low temperature) is January (10.4°F).
Average pressure in August
Chatham, NH
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Chatham, NH
- Average wind speed in August: 4.2mph
The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in August
Chatham, NH
- Average humidity in August: 79%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are May and November (77%).
Average rainfall in August
Chatham, NH
- Average rainfall in August: 1.46"
The wettest months (with the highest rainfall) are April and October (2.17").
The driest month (with the least rainfall) is September (0.94").
Average rainfall days in August
Chatham, NH
- Average rainfall days in August: 14.1 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is February (9.8 days).
Average snowfall in August
Chatham, NH
- Average snowfall in August: 0"
The month with the highest snowfall is February (6.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Chatham, NH
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are January and February (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Chatham, NH
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in August: 10h and 1min
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 18min).
Average sunshine days in August
Chatham, NH
- Average sunshine days in August: 13.7 days
The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is April (10.1 days).
Average UV index in August
Chatham, NH
- Average UV index in August: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in August
Chatham, NH
- Average cloud cover in August: 37
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility in August
Chatham, NH
- Average visibility in August: 5mi
The months with the highest visibility are April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February, March and September (4mi).
Chatham, New Hampshire, USA
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