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 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
August's transition from July to August introduces an average high-temperature of a still hot 93°F (33.9°C), marking an insignificant variation from the 94.3°F (34.6°C). August observes a noteworthy temperature drop from the daily highs during August nights, with a mean temperature of 59.5°F (15.3°C).Heat index
The heat index value during August is estimated at a fiery hot 100.4°F (38°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
The average relative humidity is 48%.Rainfall
The only month without rainfall is August.Snowfall
January through November are months without snowfall.Daylight
In August, the average length of the day in August is 13h and 35min.On the first day of the month, sunrise is at 6:08 am and sunset at 8:13 pm. On the last day of August, sunrise is at 6:34 am and sunset at 7:35 pm PDT.
Sunshine
In August, the average sunshine in August is 12h.UV index
In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get?
What is the average humidity?
What is the driest month?
Does it rain?
When it does not snow?
What is the average length of the day?
When are sunrise and sunset?
How many hours of sunshine does August have?
What is the UV index intensity?
Average temperature in August
August, CA
- Average high temperature in August: 93°F
The warmest month (with the highest average high temperature) is July (94.3°F).
The month with the lowest average high temperature is December (55.2°F).
- Average low temperature in August: 59.5°F
The month with the highest average low temperature is August (59.5°F).
The coldest month (with the lowest average low temperature) is December (41.2°F).
Average pressure in August
August, CA
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
August, CA
- Average wind speed in August: 6.3mph
The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in August
August, CA
- Average humidity in August: 48%
The month with the highest relative humidity is January (73%).
The month with the lowest relative humidity is July (44%).
Average rainfall in August
August, CA
- Average rainfall in August: 0"
The wettest month (with the highest rainfall) is February (2.13").
The driest month (with the least rainfall) is August (0").
Average rainfall days in August
August, CA
- Average rainfall days in August: 0.7 days
The month with the highest number of rainy days is March (12 days).
The month with the least rainy days is August (0.7 days).
Average snowfall days in August
August, CA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in August /
Average sunshine in August
August, CA
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 12h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in August
August, CA
- Average sunshine days in August: 30.2 days
The month with the most sunshine days is August (30.2 days).
The month with the least sunshine days is March (17.8 days).
Average UV index in August
August, CA
- Average UV index in August: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in August
August, CA
- Average cloud cover in August: 5
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in August
August, 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).
August, California, USA
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