August weather forecast
Rancho Bernardo, CA

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Weather in August

August, the last month of the summer in Rancho Bernardo, is also a moderately hot month, with an average temperature ranging between max 84.2°F (29°C) and min 64.4°F (18°C).

Temperature

August, with average temperatures reaching a high of 84.2°F (29°C) and a low of 64.4°F (18°C), is the warmest month.

Heat index

August's average heat index is calculated to be a hot 87.8°F (31°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.
Heat index specifics point out values are for conditions of shade and a slight breeze. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In Rancho Bernardo, the average relative humidity in August is 61%.

Rainfall

In Rancho Bernardo, during August, the rain falls for 2.9 days and regularly aggregates up to 0.24" (6mm) of precipitation. In Rancho Bernardo, during the entire year, the rain falls for 54.7 days and collects up to 8.15" (207mm) of precipitation.

Daylight

In August, the average length of the day is 13h and 20min.
On the first day of August in Rancho Bernardo, sunrise is at 6:02 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:14 pm PDT.

Sunshine

In Rancho Bernardo, the average sunshine in August is 11.9h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index in Rancho Bernardo. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index, 6 during August, leads to the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

What are the warmest months in Rancho Bernardo?

Rancho Bernardo, California, reaches its average highest temperatures in August, measuring 84.2°F (29°C) at the peak and 64.4°F (18°C) at the lowest.

How hot does it get in Rancho Bernardo in August?

Rancho Bernardo in August has an average high-temperature of 84.2°F (29°C) and an average low-temperature of 64.4°F (18°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is calculated to be 87.8°F (31°C).

What is the average humidity in August in Rancho Bernardo?

The average relative humidity in August in Rancho Bernardo is 61%.

How many days does it rain in August in Rancho Bernardo?

In Rancho Bernardo, in August, during 2.9 rainfall days, 0.24" (6mm) of precipitation is typically accumulated.

What is the average length of the day in August in Rancho Bernardo?

The average day length in August in Rancho Bernardo is 13h and 20min.

When is the sunrise / sunset in August in Rancho Bernardo?

In August, on the first day of the month, sunrise is at 6:02 am and sunset at 7:46 pm. On the last day of the month, in Rancho Bernardo, sunrise is at 6:22 am and sunset at 7:14 pm PDT.

How long on average sun shines in August in Rancho Bernardo?

In August, the average sunshine duration in Rancho Bernardo is 11.9h.

What are the months with the highest UV index in Rancho Bernardo?

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

How high is the UV index in August in Rancho Bernardo?

The average daily maximum UV index in August in Rancho Bernardo 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Rancho Bernardo, CA

Average temperature in August - Rancho Bernardo, CA
  • Average high temperature in August: 84.2°F

The warmest month (with the highest average high temperature) is August (84.2°F).
The month with the lowest average high temperature is December (63.9°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 (47.1°F).

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Average pressure in August
Rancho Bernardo, CA

Average pressure in August - Rancho Bernardo, CA
  • Average pressure in August: 29.88"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.87"Hg).

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Average wind speed in August
Rancho Bernardo, CA

Average wind speed in August - Rancho Bernardo, CA
  • Average wind speed in August: 4.4mph

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest months (with the lowest average wind speed) are September and October (4.3mph).

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Average humidity in August
Rancho Bernardo, CA

Average humidity in August - Rancho Bernardo, CA
  • Average humidity in August: 61%

The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is November (54%).

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Average rainfall in August
Rancho Bernardo, CA

Average rainfall in August - Rancho Bernardo, CA
  • Average rainfall in August: 0.24"

The wettest month (with the highest rainfall) is February (1.61").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in August
Rancho Bernardo, CA

Average rainfall days in August - Rancho Bernardo, CA
  • Average rainfall days in August: 2.9 days

The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.6 days).

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Average daylight in August /
Average sunshine in August
Rancho Bernardo, CA

Average daylight in August / Average sunshine in August - Rancho Bernardo, 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: 11h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 6h and 42min).

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Average sunshine days in August
Rancho Bernardo, CA

Average sunshine days in August - Rancho Bernardo, CA
  • Average sunshine days in August: 26 days

The month with the most sunshine days is June (27 days).
The month with the least sunshine days is February (21.2 days).

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Average UV index in August
Rancho Bernardo, CA

Average UV index in August - Rancho Bernardo, 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, November and December (UV index 4).

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Average cloud cover in August
Rancho Bernardo, CA

Average cloud cover in August - Rancho Bernardo, CA
  • Average cloud cover in August: 7

The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in August
Rancho Bernardo, CA

Average visibility in August - Rancho Bernardo, 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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Rancho Bernardo, California, USA

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