August weather forecastBelfast, ME
August
Weather in August
As summer's end draws near in Belfast, August brings slight changes in the weather conditions. Unlike July, average temperatures tend to take a slight dip, indicating autumn's impending arrival. Interestingly, snowfall remains non-existent, maintaining the norm of a snow-free summer season. Outdoor activities continue to dominate the local scene, with ample sunshine hours encouraging locals and visitors alike to enjoy the outdoors. August is seen as a transitional period, saying goodbye to summer and welcoming the refreshing start of autumn.Temperature
The warmest period, with an average high-temperature of 73.9°F (23.3°C), falls in July and August.Humidity
In August, the average relative humidity is 82%.Rainfall
In Belfast, in August, it is raining for 13 days, with typically 1.85" (47mm) of accumulated precipitation. In Belfast, during the entire year, the rain falls for 141.1 days and collects up to 24.29" (617mm) of precipitation.Snowfall
In Belfast, snow does not fall in June through September.Ocean temperature
The month with the warmest seawater is August, with an average ocean temperature of 60.4°F (15.8°C).Note: Most people find swimming in 60.4°F (15.8°C) to be not enjoyable. The control of one's breathing becomes more challenging as the water temperature drops below 69.8°F (21°C).
Daylight
In August, the average length of the day is 13h and 59min.On the first day of the month, sunrise is at 5:23 am and sunset at 8:00 pm. On the last day of August, sunrise is at 5:58 am and sunset at 7:13 pm EDT.
Sunshine
With an average of 9.9h of sunshine, August has the most sunshine of the year.UV index
June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 5 in August interprets into the following advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Belfast, ME
- Average high temperature in August: 73.9°F
The warmest months (with the highest average high temperature) are July and August (73.9°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in August: 56.8°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in August
Belfast, ME
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Belfast, ME
- Average wind speed in August: 6mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in August
Belfast, ME
- Average humidity in August: 82%
The months with the highest relative humidity are February and July (83%).
The month with the lowest relative humidity is November (77%).
Average rainfall in August
Belfast, ME
- Average rainfall in August: 1.85"
The wettest month (with the highest rainfall) is December (2.72").
The driest months (with the least rainfall) are July and September (1.46").
Average rainfall days in August
Belfast, ME
- Average rainfall days in August: 13 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in August
Belfast, ME
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Belfast, ME
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in August
Belfast, ME
- Average sea temperature in August: 60.4°F
The best month for swimming (with the highest average sea temperature) is August (60.4°F).
The coldest month (with the lowest average sea temperature) is March (37.8°F).
Average daylight in August /
Average sunshine in August
Belfast, ME
- 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: 9h and 54min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in August
Belfast, ME
- Average sunshine days in August: 15.8 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is April (11.7 days).
Average UV index in August
Belfast, ME
- 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, November and December (UV index 2).
Average cloud cover in August
Belfast, ME
- Average cloud cover in August: 37
The month with the most cloud cover is March (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility in August
Belfast, ME
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
