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
Entering August, the average high-temperature is recorded at a still warm 80.4°F (26.9°C), exhibiting a minimal shift from July's 81.9°F (27.7°C). Nighttime temperatures consistently average an enjoyable 63.5°F (17.5°C) during August.Humidity
The average relative humidity in August in Charlestown is 73%.Rainfall
In Charlestown, in August, it is raining for 4.4 days, with typically 0.24" (6mm) of accumulated precipitation. Throughout the year, there are 47.8 rainfall days, and 4.13" (105mm) of precipitation is accumulated.Snowfall
In Charlestown, snow does not fall in June through October.Daylight
The average length of the day in August in Charlestown is 13h and 51min.On the first day of the month, sunrise is at 5:37 am and sunset at 8:03 pm. On the last day of August, in Charlestown, Massachusetts, sunrise is at 6:09 am and sunset at 7:19 pm EDT.
Sunshine
The month with the most sunshine in Charlestown, Massachusetts, is August, with an average of 10.5h of sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A typical high UV index of 6 in August suggests the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What is the temperature in August in Charlestown?
What is the average humidity in August in Charlestown?
How much does it rain in Charlestown in August?
When it does not snow in Charlestown?
What is the average length of the day in August in Charlestown?
What time are sunrise and sunset in August in Charlestown?
What month has the most sunshine in Charlestown?
How long on average sun shines in August in Charlestown?
When is the highest UV index in Charlestown?
What is the UV index intensity in August in Charlestown?
Average temperature in August
Charlestown, MA
- Average high temperature in August: 80.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in August: 63.5°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in August
Charlestown, MA
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Charlestown, MA
- Average wind speed in August: 6mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in August
Charlestown, MA
- Average humidity in August: 73%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (69%).
Average rainfall in August
Charlestown, MA
- Average rainfall in August: 0.24"
The wettest month (with the highest rainfall) is November (0.55").
The driest month (with the least rainfall) is September (0.12").
Average rainfall days in August
Charlestown, MA
- Average rainfall days in August: 4.4 days
The month with the highest number of rainy days is April (5.9 days).
The months with the least rainy days are January and September (2.9 days).
Average snowfall in August
Charlestown, MA
- Average snowfall in August: 0"
The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in August
Charlestown, MA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (3.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Charlestown, MA
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- 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 36min).
Average sunshine days in August
Charlestown, MA
- Average sunshine days in August: 24.1 days
The month with the most sunshine days is December (25.5 days).
The month with the least sunshine days is July (22.8 days).
Average UV index in August
Charlestown, MA
- 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, November and December (UV index 2).
Average cloud cover in August
Charlestown, MA
- Average cloud cover in August: 32
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in August
Charlestown, MA
- 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).
Charlestown, Massachusetts, USA
Weather forecast for your location
2. Allow the app to use your location
