August weather forecast and climate
Chula Vista, CA

Wood and rope barriers at sunset on the waterfront of Bayside Park in Chula Vista, San Diego Bay, California
Wood and rope barriers at sunset on the waterfront of Bayside Park in Chula Vista, San Diego Bay, California

Weather in August

August, the last month of the summer, in Chula Vista, is also a moderately hot month, with average temperature fluctuating between 66.7°F (19.3°C) and 79.2°F (26.2°C).

Temperature

August is the warmest month, with an average high-temperature of 79.2°F (26.2°C) and an average low-temperature of 66.7°F (19.3°C).

Humidity

In August, the average relative humidity in Chula Vista is 67%.

Rainfall

In Chula Vista, California, it is raining for 2.6 days, with typically 0.24" (6mm) of accumulated precipitation. Throughout the year, there are 51 rainfall days, and 5.63" (143mm) of precipitation is accumulated.

Ocean temperature

The month with the warmest seawater in Chula Vista is August, with an average ocean temperature of 68°F (20°C).
Note: For swimming, a surface water temperature of 68°F (20°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

In August, the average length of the day in Chula Vista is 13.3h.

Sunshine

In August, the average sunshine in Chula Vista is 11.9h.

UV index

Months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the warmest month in Chula Vista?

With an average high-temperature of 79.2°F (26.2°C) and an average low-temperature of 66.7°F (19.3°C), August is the warmest month in Chula Vista.

What is the temperature in August in Chula Vista?

In August, in Chula Vista, the average high-temperature is 79.2°F (26.2°C), and the average low-temperature is 66.7°F (19.3°C).

What is the average humidity in August in Chula Vista?

The average relative humidity in August in Chula Vista is 67%.

How many days does it rain in August in Chula Vista?

In Chula Vista, in August, it is raining for 2.6 days, with typically 0.24" (6mm) of accumulated precipitation.

What month is the ocean warmest in Chula Vista?

The month with the warmest seawater in Chula Vista, California, is August, with an average ocean temperature of 68°F (20°C).

What is the ocean temperature in August in Chula Vista?

In August, the average ocean temperature in Chula Vista is 68°F (20°C). For swimming, a surface water temperature of 68°F (20°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

What is the average length of the day in August in Chula Vista?

In Chula Vista, the average length of the day in August is 13.3h.

How long on average sun shines in August in Chula Vista?

The average sunshine in August in Chula Vista, California, is 11.9h.

What is the month with the highest UV index in Chula Vista?

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

How high is the UV index in August in Chula Vista?

In Chula Vista, California, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation.

Average temperature in August
Chula Vista, CA

Average temperature in August - Chula Vista, CA
  • Average high temperature in August: 79.2°F

The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (63.7°F).

  • Average low temperature in August: 66.7°F

The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is February (51.1°F).

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Average pressure in August
Chula Vista, CA

Average pressure in August - Chula Vista, CA
  • Average pressure in August: 29.89"

The month with the highest atmospheric pressure is January (30.09").
Months with the lowest atmospheric pressure are June and September (29.88").

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Average wind speed in August
Chula Vista, CA

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

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is October (5mph).

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Average humidity in August
Chula Vista, CA

Average humidity in August - Chula Vista, CA
  • Average humidity in August: 67%

The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (58%).

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Average rainfall in August
Chula Vista, CA

Average rainfall in August - Chula Vista, CA
  • Average rainfall in August: 0.24"

The wettest month (with the highest rainfall) is February (1.1").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in August
Chula Vista, CA

Average rainfall days in August - Chula Vista, CA
  • Average rainfall days in August: 2.6 days

The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.7 days).

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Average sea temperature in August
Chula Vista, CA

Average sea temperature in August - Chula Vista, CA
  • Average sea temperature in August: 67.9°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (58.7°F).

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Average daylight in August /
Average sunshine in August
Chula Vista, CA

Average daylight in August / Average sunshine in August - Chula Vista, CA
  • Average daylight in August: 13.3h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in August: 11.9h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in August
Chula Vista, CA

Average sunshine days in August - Chula Vista, CA
  • Average sunshine days in August: 25.6 days

The month with the most sunshine days is June (27.2 days).
The month with the least sunshine days is February (21.1 days).

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Average UV index in August
Chula Vista, CA

Average UV index in August - Chula Vista, 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, March, November and December (UV index 4).

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Average cloud cover in August
Chula Vista, CA

Average cloud cover in August - Chula Vista, CA
  • Average cloud cover in August: 8

Months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 8).

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Average visibility in August
Chula Vista, CA

Average visibility in August - Chula Vista, 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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