August weather forecast
Aliso Viejo, CA

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Weather in August

August, the last month of the summer in Aliso Viejo, is another warm month, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 64.4°F (18°C).

Temperature

In Aliso Viejo, the highest average temperatures are observed in August, with a high of 80.2°F (26.8°C) and a low of 64.4°F (18°C).

Humidity

The average relative humidity in August is 65%.

Rainfall

In August, the rain falls for 3.6 days. Throughout August, 0.39" (10mm) of precipitation is accumulated. In Aliso Viejo, California, during the entire year, the rain falls for 66.3 days and collects up to 5.67" (144mm) of precipitation.

Daylight

The average length of the day in August is 13h and 22min.
On the first day of August in Aliso Viejo, California, sunrise is at 6:03 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:17 pm PDT.

Sunshine

July and August, with an average of 12h of sunshine, are months with the most sunshine.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 in August translates into this advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Frequently asked questions

What part of the year is the hottest in Aliso Viejo?

In Aliso Viejo, August is the month with the highest recorded average temperatures, measuring a high of 80.2°F (26.8°C) and a low of 64.4°F (18°C).

What are August temperatures in Aliso Viejo?

The high-temperature, in August, in Aliso Viejo, records 80.2°F (26.8°C), while the low-temperature is 64.4°F (18°C).

What is the average humidity in August in Aliso Viejo?

In Aliso Viejo, California, the average relative humidity in August is 65%.

How much does it rain in Aliso Viejo in August?

In August, the rain falls for 3.6 days. Throughout August, 0.39" (10mm) of precipitation is accumulated.

What is the average length of the day in August in Aliso Viejo?

In August, the average day length is 13h and 22min.

When is the sunrise / sunset in August in Aliso Viejo?

On the first day of August in Aliso Viejo, sunrise is at 6:03 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:17 pm PDT.

What are the months with the most sunshine in Aliso Viejo?

The months with the most sunshine in Aliso Viejo are July and August, with an average of 12h of sunshine.

How long on average sun shines in August in Aliso Viejo?

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

When is the highest UV index in Aliso Viejo?

The months with the highest UV index in Aliso Viejo, California, are June through September, with an average maximum UV index of 6.

What is the UV index reading in August in Aliso Viejo?

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

Average temperature in August
Aliso Viejo, CA

Average temperature in August - Aliso Viejo, CA
  • Average high temperature in August: 80.2°F

The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (62.8°F).

  • Average low temperature in August: 64.4°F

The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).

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Average pressure in August
Aliso Viejo, CA

Average pressure in August - Aliso Viejo, CA
  • Average pressure in August: 29.89"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in August
Aliso Viejo, CA

Average wind speed in August - Aliso Viejo, CA
  • Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest months (with the lowest average wind speed) are August, September and October (4.7mph).

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Average humidity in August
Aliso Viejo, CA

Average humidity in August - Aliso Viejo, CA
  • Average humidity in August: 65%

The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (56%).

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Average rainfall in August
Aliso Viejo, CA

Average rainfall in August - Aliso Viejo, CA
  • Average rainfall in August: 0.39"

The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in August
Aliso Viejo, CA

Average rainfall days in August - Aliso Viejo, CA
  • Average rainfall days in August: 3.6 days

The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (2.6 days).

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Average daylight in August /
Average sunshine in August
Aliso Viejo, CA

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in August: 12h and 0min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in August
Aliso Viejo, CA

Average sunshine days in August - Aliso Viejo, CA
  • Average sunshine days in August: 23.6 days

The month with the most sunshine days is January (24.1 days).
The month with the least sunshine days is February (19.6 days).

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Average UV index in August
Aliso Viejo, CA

Average UV index in August - Aliso Viejo, CA
  • Average UV index in August: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in August
Aliso Viejo, CA

Average cloud cover in August - Aliso Viejo, CA
  • Average cloud cover in August: 7

The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in August
Aliso Viejo, CA

Average visibility in August - Aliso Viejo, 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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Aliso Viejo, California, USA

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