August weather forecastMendocino, CA
August
Weather in August
August, the last month of the summer in Mendocino, is also an enjoyable month, with an average temperature ranging between max 66.4°F (19.1°C) and min 55°F (12.8°C).Temperature
August reports an average high-temperature of a still comfortable 66.4°F (19.1°C), matching the temperature of July. An average low-temperature of 55°F (12.8°C) is recorded in the month of August.Humidity
The months with the highest humidity are March, May and August, with an average relative humidity of 80%.Rainfall
June through August are months with the least rain in Mendocino when the rain falls for 1.8 days and typically aggregates up to 0.08" (2mm) of rain.Snowfall
January, March through December are months without snowfall.Ocean temperature
In Mendocino, in August, the average water temperature is 54.1°F (12.3°C).Note: One needs to be cautious in 54.1°F (12.3°C) waters. 55.4°F (13°C) is already forbidding, but sub14°F (-10°C) can seriously disrupt your breathing and lead to a frigid shock, considering one's well-being.
Daylight
In August, the average length of the day is 13h and 40min.On the first day of August, sunrise is at 6:16 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 7:46 pm PDT.
Sunshine
The months with the most sunshine are July and August, with an average of 11.8h 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 of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 5 during August morphs into the following directions:
Be vigilant - A duty to shield skin and eyes from injury exists. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Mendocino, CA
- Average high temperature in August: 66.4°F
The warmest month (with the highest average high temperature) is September (67.5°F).
The months with the lowest average high temperature are February and December (54.3°F).
- Average low temperature in August: 55°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).
Average pressure in August
Mendocino, CA
- Average pressure in August: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in August
Mendocino, CA
- Average wind speed in August: 7.8mph
The windiest month (with the highest average wind speed) is June (10.9mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in August
Mendocino, CA
- Average humidity in August: 80%
The months with the highest relative humidity are March, May and August (80%).
The month with the lowest relative humidity is October (75%).
Average rainfall in August
Mendocino, CA
- Average rainfall in August: 0.08"
The wettest month (with the highest rainfall) is December (1.77").
The driest months (with the least rainfall) are June, July and August (0.08").
Average rainfall days in August
Mendocino, CA
- Average rainfall days in August: 1.8 days
The month with the highest number of rainy days is March (11.4 days).
The months with the least rainy days are June and August (1.8 days).
Average snowfall in August
Mendocino, CA
- Average snowfall in August: 0"
The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in August
Mendocino, CA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in August
Mendocino, CA
- Average sea temperature in August: 54.2°F
The best month for swimming (with the highest average sea temperature) is October (55.6°F).
The coldest month (with the lowest average sea temperature) is April (52.1°F).
Average daylight in August /
Average sunshine in August
Mendocino, CA
- Average daylight in August: 13h and 42min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in August: 11h and 48min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in August
Mendocino, CA
- Average sunshine days in August: 27.7 days
The month with the most sunshine days is July (28.2 days).
The month with the least sunshine days is March (18.4 days).
Average UV index in August
Mendocino, CA
- 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, November and December (UV index 3).
Average cloud cover in August
Mendocino, CA
- Average cloud cover in August: 11
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in August
Mendocino, CA
- 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).





