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
August welcomes an average high-temperature of a still moderately hot 77.7°F (25.4°C), not much different from the preceding month. An average minimum temperature of 65.7°F (18.7°C) is recorded in Portsmouth during the month of August.Humidity
In Portsmouth, the average relative humidity in August is 78%.Rainfall
In Portsmouth, in August, during 11.8 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Portsmouth, during the entire year, the rain falls for 148.1 days and collects up to 29.65" (753mm) of precipitation.Snowfall
In Portsmouth, Rhode Island, snow does not fall in April, June through October.Daylight
In August, the average length of the day in Portsmouth is 13h and 48min.On the first day of August, sunrise is at 5:40 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 7:19 pm EDT.
Sunshine
August has the most sunshine of the year in Portsmouth, with an average of 10.5h of sunshine.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Portsmouth. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum high UV index of 6 in August translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
What is the average August temperature in Portsmouth?
What is the average humidity in August in Portsmouth?
How many days does it rain in August in Portsmouth?
When it does not snow in Portsmouth?
What is the average length of the day in August in Portsmouth?
What time are sunrise and sunset in August in Portsmouth?
What month has the most sunshine in Portsmouth?
How many hours of sunshine does Portsmouth have in August?
What are the months with the highest UV index in Portsmouth?
How high is the UV index in August in Portsmouth?
Average temperature in August
Portsmouth, RI
- Average high temperature in August: 77.7°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in August: 65.7°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in August
Portsmouth, RI
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Portsmouth, RI
- Average wind speed in August: 8.1mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).
Average humidity in August
Portsmouth, RI
- Average humidity in August: 78%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is March (73%).
Average rainfall in August
Portsmouth, RI
- Average rainfall in August: 2.09"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in August
Portsmouth, RI
- Average rainfall days in August: 11.8 days
The month with the highest number of rainy days is April (15.6 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in August
Portsmouth, RI
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in August
Portsmouth, RI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Portsmouth, RI
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in August: 10h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in August
Portsmouth, RI
- Average sunshine days in August: 16.9 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in August
Portsmouth, RI
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in August
Portsmouth, RI
- Average cloud cover in August: 29
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in August
Portsmouth, RI
- Average visibility in August: 6mi
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).
Portsmouth, Rhode Island, USA
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