August weather forecast
Livermore, CA

A path in the scenic hilly and forest landscape of the famous Lake Del Valle Regional Park in Livermore, California
A path in the scenic hilly and forest landscape of the famous Lake Del Valle Regional Park in Livermore, California

Weather in August

August, the last month of the summer in Livermore, is another warm month, with an average temperature varying between 56.7°F (13.7°C) and 85.3°F (29.6°C).

Temperature

In August, the average high-temperature is almost the same as in July - a moderately hot 85.3°F (29.6°C). In Livermore, California, the average low-temperature is 56.7°F (13.7°C).

Heat index

In August, the average heat index is calculated to be a tropical 89.6°F (32°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, differences in body mass, height, and shape, metabolic differences). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Livermore, the average relative humidity in August is 57%.

Rainfall

August is the month with the least rainfall in Livermore. Rain falls for 1.3 days and accumulates 0.04" (1mm) of precipitation.

Daylight

In Livermore, the average length of the day in August is 13h and 34min.
On the first day of the month, sunrise is at 6:10 am and sunset at 8:15 pm. On the last day of August, in Livermore, sunrise is at 6:36 am and sunset at 7:38 pm PDT.

Sunshine

In August, the average sunshine is 12h.

UV index

The months with the highest UV index in Livermore, California, 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 unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in August in Livermore?

In August, the average high-temperature is 85.3°F (29.6°C), and the average low-temperature is 56.7°F (13.7°C). in August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 89.6°F (32°C).

What is the average humidity in August in Livermore?

In August, the average relative humidity in Livermore is 57%.

What is the driest month in Livermore?

August is the month with the least rainfall in Livermore, California. Rain falls for 1.3 days and accumulates 0.04" (1mm) of precipitation.

How much does it rain in Livermore in August?

In August, the rain falls for 1.3 days. Throughout August, 0.04" (1mm) of precipitation is accumulated.

How many hours of daylight does Livermore have in August?

In Livermore, California, the average day length in August is 13h and 34min.

What time are sunrise and sunset in August in Livermore?

In August, on the first day of the month, sunrise is at 6:10 am and sunset at 8:15 pm. On the last day of the month, in Livermore, sunrise is at 6:36 am and sunset at 7:38 pm PDT.

How many hours of sunshine does Livermore have in August?

In Livermore, the average sunshine duration in August is 12h.

What are the months with the highest UV index in Livermore?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Livermore, California.

What is the UV index reading in August in Livermore?

In August, the average daily maximum UV index in Livermore, California, is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Livermore, CA

Average temperature in August - Livermore, CA
  • Average high temperature in August: 85.3°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (54.9°F).

  • Average low temperature in August: 56.7°F

The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is January (41.4°F).

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Average pressure in August
Livermore, CA

Average pressure in August - Livermore, 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).

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Average wind speed in August
Livermore, CA

Average wind speed in August - Livermore, CA
  • Average wind speed in August: 5.7mph

The windiest months (with the highest average wind speed) are May and June (6.5mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).

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Average humidity in August
Livermore, CA

Average humidity in August - Livermore, CA
  • Average humidity in August: 57%

The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July and September (55%).

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Average rainfall in August
Livermore, CA

Average rainfall in August - Livermore, CA
  • Average rainfall in August: 0.04"

The wettest month (with the highest rainfall) is February (2.09").
The driest month (with the least rainfall) is August (0.04").

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Average rainfall days in August
Livermore, CA

Average rainfall days in August - Livermore, CA
  • Average rainfall days in August: 1.3 days

The month with the highest number of rainy days is March (12.7 days).
The month with the least rainy days is August (1.3 days).

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Average daylight in August /
Average sunshine in August
Livermore, CA

Average daylight in August / Average sunshine in August - Livermore, CA
  • Average daylight in August: 13h and 34min

The month with the longest days is June (Average daylight: 14h and 44min).
The month with the shortest days is December (Average daylight: 9h and 37min).

  • 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).

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Average sunshine days in August
Livermore, CA

Average sunshine days in August - Livermore, CA
  • Average sunshine days in August: 28.8 days

The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is March (17.6 days).

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Average UV index in August
Livermore, CA

Average UV index in August - Livermore, 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).

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Average cloud cover in August
Livermore, CA

Average cloud cover in August - Livermore, CA
  • Average cloud cover in August: 6

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).

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Average visibility in August
Livermore, CA

Average visibility in August - Livermore, 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).

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