August weather forecast
San Fernando, CA

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Weather in August

August, the last month of the summer in San Fernando, is also a moderately hot month, with an average temperature varying between 64.9°F (18.3°C) and 85.8°F (29.9°C).

Temperature

During the warmest month, August, temperatures average a high of 85.8°F (29.9°C) and a low of 64.9°F (18.3°C).

Heat index

For most parts of August, the heat index is estimated at a tropical 87.8°F (31°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.
Heat index's context suggests values are appropriate for shady areas and slight breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

The average relative humidity in August is 51%.

Rainfall

In San Fernando, during August, the rain falls for 1.2 days and regularly aggregates up to 0.08" (2mm) of precipitation. In San Fernando, during the entire year, the rain falls for 39.8 days and collects up to 7.52" (191mm) of precipitation.

Daylight

The average length of the day in August is 13h and 23min.
On the first day of August, sunrise is at 6:05 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:20 pm PDT.

Sunshine

In San Fernando, the average sunshine in August is 12h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index in San Fernando. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 during August translates into the following guidance:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

What time of the year is the hottest in San Fernando?

In San Fernando, August registers the highest temperatures, averaging 85.8°F (29.9°C) at the peak and 64.9°F (18.3°C) at the lowest.

Is it hot in San Fernando during August?

In August, the average high-temperature and low-temperature in San Fernando, California, are 85.8°F (29.9°C) and 64.9°F (18.3°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is estimated at 87.8°F (31°C).

What is the average humidity in August in San Fernando?

In San Fernando, the average relative humidity in August is 51%.

How many days does it rain in August in San Fernando?

In San Fernando, California, in August, it is raining for 1.2 days, with typically 0.08" (2mm) of accumulated precipitation.

What is the average length of the day in August in San Fernando?

In San Fernando, California, the average day length in August is 13h and 23min.

When are sunrise and sunset in August in San Fernando?

On the first day of August in San Fernando, sunrise is at 6:05 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:20 pm PDT.

How long on average sun shines in August in San Fernando?

The average sunshine duration in August in San Fernando, California, is 12h.

What is the month with the highest UV index in San Fernando?

The months with the highest UV index in San Fernando are June through September, with an average maximum UV index of 6.

What is the UV index reading in August in San Fernando?

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

Average temperature in August
San Fernando, CA

Average temperature in August - San Fernando, CA
  • Average high temperature in August: 85.8°F

The warmest month (with the highest average high temperature) is August (85.8°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is December (46.2°F).

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Average pressure in August
San Fernando, CA

Average pressure in August - San Fernando, CA
  • Average pressure in August: 29.9"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in August
San Fernando, CA

Average wind speed in August - San Fernando, CA
  • Average wind speed in August: 4.7mph

The windiest months (with the highest average wind speed) are January and December (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in August
San Fernando, CA

Average humidity in August - San Fernando, CA
  • Average humidity in August: 51%

The month with the highest relative humidity is June (58%).
The month with the lowest relative humidity is November (47%).

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Average rainfall in August
San Fernando, CA

Average rainfall in August - San Fernando, CA
  • Average rainfall in August: 0.08"

The wettest month (with the highest rainfall) is February (1.54").
The driest month (with the least rainfall) is June (0").

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Average rainfall days in August
San Fernando, CA

Average rainfall days in August - San Fernando, CA
  • Average rainfall days in August: 1.2 days

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.8 days).

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Average daylight in August /
Average sunshine in August
San Fernando, CA

Average daylight in August / Average sunshine in August - San Fernando, CA
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in August: 12h and 0min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).

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Average sunshine days in August
San Fernando, CA

Average sunshine days in August - San Fernando, CA
  • Average sunshine days in August: 28.7 days

The month with the most sunshine days is May (28.8 days).
The month with the least sunshine days is February (22.9 days).

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Average UV index in August
San Fernando, CA

Average UV index in August - San Fernando, CA
  • Average UV index in August: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in August
San Fernando, CA

Average cloud cover in August - San Fernando, CA
  • Average cloud cover in August: 4

The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in August
San Fernando, CA

Average visibility in August - San Fernando, 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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San Fernando, California, USA

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