August weather forecastOakland, CA
August
Weather in August
August further intensifies the summer in Oakland. The month witnesses an increase in average sea temperatures, offering splendid conditions for beach visits. Besides, with a high UV index, ensuring good sun protection becomes essential. Slight fluctuations in temperature, rainfall, and wind speed maintain the summer vibe. Yet, the most significant aspect of August is the maximum average temperature of 73.2°F (22.9°C), making it the hottest month of the year in Oakland. The shift from August to September brings noticeable adjustments in various weather characteristics.Temperature
August's arrival registers an average high-temperature of a still pleasant 73.2°F (22.9°C), closely aligning with the temperature of the previous month. Throughout August, an average low-temperature of 56.1°F (13.4°C) is experienced.Humidity
In August, the average relative humidity is 73%.Rainfall
January through June, August through December are months with rainfall. August is the first month it rains. Throughout August, in the average 0.8 rainfall days, it receives 0.04" (1mm) of precipitation. Throughout the year, there are 44 rainfall days, and 3.03" (77mm) of precipitation is accumulated.Ocean temperature
In August, the average ocean temperature is 56.7°F (13.7°C).Note: One needs to be cautious in 56.7°F (13.7°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
The average length of the day in August is 13h and 34min.On the first day of the month, sunrise is at 6:13 am and sunset at 8:17 pm. On the last day of August, sunrise is at 6:39 am and sunset at 7:39 pm PDT.
Sunshine
In Oakland, the average sunshine in August is 11.8h.UV index
April through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: A typical high UV index of 5 in August suggests the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Oakland, CA
- Average high temperature in August: 73.2°F
The warmest month (with the highest average high temperature) is September (73.9°F).
The month with the lowest average high temperature is December (55.8°F).
- Average low temperature in August: 56.1°F
The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is January (45.7°F).
Average pressure in August
Oakland, CA
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in August
Oakland, CA
- Average wind speed in August: 6.1mph
The windiest month (with the highest average wind speed) is May (7.6mph).
The calmest months (with the lowest average wind speed) are October and November (5.5mph).
Average humidity in August
Oakland, CA
- Average humidity in August: 73%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (67%).
Average rainfall in August
Oakland, CA
- Average rainfall in August: 0.04"
The wettest month (with the highest rainfall) is February (0.67").
The driest month (with the least rainfall) is July (0").
Average rainfall days in August
Oakland, CA
- Average rainfall days in August: 0.8 days
The month with the highest number of rainy days is March (8.5 days).
The months with the least rainy days are June and August (0.8 days).
Average sea temperature in August
Oakland, CA
- Average sea temperature in August: 56.7°F
The best month for swimming (with the highest average sea temperature) is September (57.3°F).
The coldest months (with the lowest average sea temperature) are April and June (53°F).
Average daylight in August /
Average sunshine in August
Oakland, CA
- Average daylight in August: 13h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 11h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in August
Oakland, CA
- Average sunshine days in August: 29.6 days
The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is March (20.8 days).
Average UV index in August
Oakland, CA
- Average UV index in August: 5
The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in August
Oakland, CA
- Average cloud cover in August: 14
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in August
Oakland, 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).
