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 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 experiences an average high-temperature of a still moderately hot 82.4°F (28°C), barely different from July's 83.5°F (28.6°C). Alviso anticipates a considerable daily temperature fluctuation in August, with low temperatures averaging a mild 56.8°F (13.8°C).Heat index
August's heat index is calculated to be a hot 86°F (30°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
In August, the average relative humidity is 61%.Rainfall
The months with the least rainfall in Alviso are June through August Rain falls for 0.4 days and accumulates 0.04" (1mm) of rain.Daylight
The average length of the day in August is 13h and 33min.On the first day of August in Alviso, sunrise is at 6:12 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:37 pm PDT.
Sunshine
In Alviso, California, the average sunshine in August is 12h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: In August, the UV index of 6 transforms into the following advice:
Shield from overexposure. Defense against sun-related harm is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
How hot does it get in Alviso in August?
What is the average humidity in August in Alviso?
What is the driest month in Alviso?
How much does it rain in Alviso in August?
How many hours of daylight does Alviso have in August?
When is the sunrise / sunset in August in Alviso?
How many hours of sunshine does Alviso have in August?
What are the months with the highest UV index in Alviso?
How high is the UV index in August in Alviso?
Average temperature in August
Alviso, CA
- Average high temperature in August: 82.4°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in August: 56.8°F
The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are January and December (42.6°F).
Average pressure in August
Alviso, CA
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in August
Alviso, CA
- Average wind speed in August: 4.5mph
The windiest month (with the highest average wind speed) is May (5.8mph).
The calmest months (with the lowest average wind speed) are October and November (4.3mph).
Average humidity in August
Alviso, CA
- Average humidity in August: 61%
The month with the highest relative humidity is March (73%).
The month with the lowest relative humidity is July (58%).
Average rainfall in August
Alviso, CA
- Average rainfall in August: 0.04"
The wettest month (with the highest rainfall) is March (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").
Average rainfall days in August
Alviso, CA
- Average rainfall days in August: 0.4 days
The month with the highest number of rainy days is March (9.9 days).
The month with the least rainy days is August (0.4 days).
Average daylight in August /
Average sunshine in August
Alviso, CA
- Average daylight in August: 13h and 4min
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: 12h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in August
Alviso, CA
- Average sunshine days in August: 29.6 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is March (19.5 days).
Average UV index in August
Alviso, CA
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in August
Alviso, CA
- Average cloud cover in August: 7
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in August
Alviso, 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).
Alviso, California, USA
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