August weather forecast
Westminster, CA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Westminster, California, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 78.6°F (25.9°C).

Temperature

August, known for its average high temperature of 78.6°F (25.9°C) and an average low temperature of 64.9°F (18.3°C), is the warmest month.

Humidity

In August, the average relative humidity is 66%.

Rainfall

In Westminster, in August, during 1 rainfall days, 0.04" (1mm) of precipitation is typically accumulated. Throughout the year, there are 25.2 rainfall days, and 1.57" (40mm) of precipitation is accumulated.

Daylight

In August, the average length of the day is 13h and 22min.
On the first day of August, sunrise is at 6:04 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:18 pm PDT.

Sunshine

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

UV index

July through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 during August translates into the following directions:
Deter overexposure. Protecting against the sun's effects is essential. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Updated: Jun 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

August is the warmest month of the year, registering average temperatures as high as 78.6°F (25.9°C) and as low as 64.9°F (18.3°C).

What are August temperatures?

During August, Westminster experiences an average high-temperature of 78.6°F (25.9°C) and a low-temperature of 64.9°F (18.3°C).

What is the average humidity in August?

In Westminster, the average relative humidity in August is 66%.

How many days does it rain in August?

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

How many hours of daylight does Westminster have in August?

The average day length in August is 13h and 22min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:04 am and sunset at 7:51 pm. On the last day of the month, in Westminster, sunrise is at 6:25 am and sunset at 7:18 pm PDT.

What is the month with the most sunshine in Westminster?

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

How many hours of sunshine does Westminster have in August?

In August, the average sunshine duration is 12h.

What is the month with the highest UV index?

The months with the highest UV index are July through September, with an average maximum UV index of 6.

What is the UV index reading in August?

In Westminster, California, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to 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
Westminster, CA

Average temperature in August - Westminster, CA
  • Average high temperature in August: 78.6°F

The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (63.1°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is September (65.1°F).
The coldest month (with the lowest average low temperature) is February (52°F).

Average pressure in August
Westminster, CA

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

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).

Average wind speed in August
Westminster, CA

Average wind speed in August - Westminster, CA
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (5.2mph).

Average humidity in August
Westminster, CA

Average humidity in August - Westminster, CA
  • Average humidity in August: 66%

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

Average rainfall in August
Westminster, CA

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

The wettest month (with the highest rainfall) is December (0.35").
The driest month (with the least rainfall) is June (0").

Average rainfall days in August
Westminster, CA

Average rainfall days in August - Westminster, CA
  • Average rainfall days in August: 1 days

The month with the highest number of rainy days is March (4.6 days).
The month with the least rainy days is June (0.7 days).

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

Average daylight in August / Average sunshine in August - Westminster, 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: 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 42min).

Average sunshine days in August
Westminster, CA

Average sunshine days in August - Westminster, CA
  • Average sunshine days in August: 27.7 days

The months with the most sunshine days are May and June (29 days).
The month with the least sunshine days is February (24.4 days).

Average UV index in August
Westminster, CA

Average UV index in August - Westminster, CA
  • Average UV index in August: 6

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

Average cloud cover in August
Westminster, CA

Average cloud cover in August - Westminster, CA
  • Average cloud cover in August: 7

The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).

Average visibility in August
Westminster, CA

Average visibility in August - Westminster, 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).

Westminster, California, USA

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