August weather forecast and climate
Placentia, CA

Weather in August

The last month of the summer, August, is another warm month in Placentia, California, with average temperature ranging between min 65.7°F (18.7°C) and max 85.3°F (29.6°C).

Temperature

The warmest month is August, with an average high-temperature of 85.3°F (29.6°C) and an average low-temperature of 65.7°F (18.7°C).

Heat index

In August, the average heat index is calculated to be a hot 88.5°F (31.4°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', 'felt air temperature', 'apparent temperature', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, differences in body mass, height, and shape, wind), and activity. Be aware that direct exposure to sunlight increases heat impact and may raise the 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 Placentia, the average relative humidity in August is 56%.

Rainfall

In Placentia, during August, the rain falls for 1.9 days and regularly aggregates up to 0.16" (4mm) of precipitation. In Placentia, during the entire year, the rain falls for 53.2 days and collects up to 7.72" (196mm) of precipitation.

Daylight

The average length of the day in August is 13.4h.

Sunshine

The average sunshine in August is 12h.

UV index

Months with the highest UV index in Placentia are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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 warmest month in Placentia?

August is the warmest month in Placentia, with an average high-temperature of 85.3°F (29.6°C) and an average low-temperature of 65.7°F (18.7°C).

What is the temperature in August in Placentia?

In Placentia, in August, the average high-temperature is 85.3°F (29.6°C), and the average low-temperature is 65.7°F (18.7°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 88.5°F (31.4°C).

What is the average humidity in August in Placentia?

In August, the average relative humidity is 56%.

How many days does it rain in August in Placentia?

In Placentia, in August, it is raining for 1.9 days, with typically 0.16" (4mm) of accumulated precipitation.

What is the average length of the day in August in Placentia?

In Placentia, California, the average length of the day in August is 13.4h.

How many hours of sunshine does Placentia have in August?

In August, the average sunshine in Placentia, California, is 12h.

What is the month with the highest UV index in Placentia?

Months with the highest UV index in Placentia are June through September, with an average maximum UV index of 6.

How high is the UV index in August in Placentia?

The average daily maximum UV index in August in Placentia, California, is 6. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to the Sun's UV rays.

Average temperature in August
Placentia, CA

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

The warmest month (with the highest average high temperature) is August (85.3°F).
The month with the lowest average high temperature is December (64.2°F).

  • Average low temperature in August: 65.7°F

The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).

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Average pressure in August
Placentia, CA

Average pressure in August - Placentia, CA
  • Average pressure in August: 29.89"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in August
Placentia, CA

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

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in August
Placentia, CA

Average humidity in August - Placentia, CA
  • Average humidity in August: 56%

The month with the highest relative humidity is June (63%).
The month with the lowest relative humidity is November (50%).

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Average rainfall in August
Placentia, CA

Average rainfall in August - Placentia, CA
  • Average rainfall in August: 0.16"

The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in August
Placentia, CA

Average rainfall days in August - Placentia, CA
  • Average rainfall days in August: 1.9 days

The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.4 days).

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

Average daylight in August / Average sunshine in August - Placentia, CA
  • Average daylight in August: 13.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in August: 12h

The month with the most sunshine is July (Average sunshine: 12.1h).
Months with the least sunshine are February and December (Average sunshine: 6.8).

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Average sunshine days in August
Placentia, CA

Average sunshine days in August - Placentia, CA
  • Average sunshine days in August: 26.7 days

The month with the most sunshine days is August (26.7 days).
The month with the least sunshine days is February (20.7 days).

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Average UV index in August
Placentia, CA

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

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

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Average cloud cover in August
Placentia, CA

Average cloud cover in August - Placentia, CA
  • Average cloud cover in August: 5

Months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in August
Placentia, CA

Average visibility in August - Placentia, CA
  • Average visibility in August: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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