August weather forecastCoos Bay, OR
August
Weather in August
The last summer month of August in Coos Bay sees mild changes in the weather. The rainfall takes a slight upward turn to 0.28" (7mm), yet the atmosphere remains predominantly dry. Slight changes in wind patterns accompany shifts in temperatures, hinting at autumn’s imminent arrival. The city continues to soak in ample sunshine during the lengthening daylight hours. Overall, August bids adieu to summer while creating anticipation for the onset of autumn.Temperature
The temperatures reach their highest averages in August, with highs of 66.9°F (19.4°C) and lows of 52.3°F (11.3°C).Humidity
The months with the highest humidity are February and August, with an average relative humidity of 84%.Rainfall
In August, in Coos Bay, the rain falls for 3.5 days. Throughout August, 0.28" (7mm) of precipitation is accumulated. In Coos Bay, during the entire year, the rain falls for 153 days and collects up to 33.5" (851mm) of precipitation.Snowfall
In Coos Bay, snow does not fall in March through October and December.Daylight
In Coos Bay, Oregon, the average length of the day in August is 13h and 54min.On the first day of August, sunrise is at 6:07 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:53 pm PDT.
Sunshine
In August, the average sunshine is 10.7h.UV index
In August, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The average daily UV index of 4 in August transforms into the following instructions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. 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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Coos Bay, OR
- Average high temperature in August: 66.9°F
The warmest month (with the highest average high temperature) is August (66.9°F).
The month with the lowest average high temperature is December (49.1°F).
- Average low temperature in August: 52.3°F
The month with the highest average low temperature is August (52.3°F).
The coldest months (with the lowest average low temperature) are February and December (41.7°F).
Average pressure in August
Coos Bay, OR
- Average pressure in August: 30.02"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).
Average wind speed in August
Coos Bay, OR
- Average wind speed in August: 6.9mph
The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in August
Coos Bay, OR
- Average humidity in August: 84%
The months with the highest relative humidity are February and August (84%).
The months with the lowest relative humidity are April and October (81%).
Average rainfall in August
Coos Bay, OR
- Average rainfall in August: 0.28"
The wettest month (with the highest rainfall) is December (5.87").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in August
Coos Bay, OR
- Average rainfall days in August: 3.5 days
The month with the highest number of rainy days is March (19.2 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in August
Coos Bay, OR
- Average snowfall in August: 0"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").
Average snowfall days in August
Coos Bay, OR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Coos Bay, OR
- 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 42min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 4h and 24min).
Average sunshine days in August
Coos Bay, OR
- Average sunshine days in August: 25.4 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (9.7 days).
Average UV index in August
Coos Bay, OR
- Average UV index in August: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 2).
Average cloud cover in August
Coos Bay, OR
- Average cloud cover in August: 29
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are July and September (Cloud cover 28).
Average visibility in August
Coos Bay, OR
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
