July 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 July

July in Chula Vista, California, is a warm summer month, with average temperature ranging between max 77°F (25°C) and min 64.8°F (18.2°C).

Temperature

In Chula Vista, the average high-temperature is almost the same as in June - a moderately hot 77°F (25°C). In Chula Vista, the average low-temperature is 64.8°F (18.2°C).

Humidity

The average relative humidity in July is 69%.

Rainfall

In Chula Vista, during July, the rain falls for 4.1 days and regularly aggregates up to 0.28" (7mm) of precipitation. In Chula Vista, during the entire year, the rain falls for 51 days and collects up to 5.63" (143mm) of precipitation.

Ocean temperature

In Chula Vista, the average seawater temperature in July is 67.1°F (19.5°C).
Note: Swimming in 67.1°F (19.5°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

In Chula Vista, the average length of the day in July is 14h.

Sunshine

With an average of 12h of sunshine, July has the most sunshine of the year.

UV index

Months with the highest UV index in Chula Vista, California, are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. 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 temperature in July in Chula Vista?

In July, in Chula Vista, California, the average high-temperature is 77°F (25°C), and the average low-temperature is 64.8°F (18.2°C).

What is the average humidity in July in Chula Vista?

The average relative humidity in July in Chula Vista, California, is 69%.

How much does it rain in Chula Vista in July?

In Chula Vista, California, in July, it is raining for 4.1 days, with typically 0.28" (7mm) of accumulated precipitation.

How cold is the water in July in Chula Vista?

In July, the average ocean temperature in Chula Vista is 67.1°F (19.5°C). For most, swimming in 67.1°F (19.5°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does Chula Vista have in July?

In Chula Vista, California, the average length of the day in July is 14h.

What month has the most sunshine in Chula Vista?

July has the most sunshine of the year in Chula Vista, California, with an average of 12h of sunshine.

How many hours of sunshine does Chula Vista have in July?

The average sunshine in July in Chula Vista, California, is 12h.

When is the highest UV index in Chula Vista?

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

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

In July, the average daily maximum UV index in Chula Vista is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in July
Chula Vista, CA

Average temperature in July - Chula Vista, CA
  • Average high temperature in July: 77°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 July: 64.8°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 July
Chula Vista, CA

Average pressure in July - Chula Vista, CA
  • Average pressure in July: 29.91"

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 July
Chula Vista, CA

Average wind speed in July - Chula Vista, CA
  • Average wind speed in July: 5.4mph

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 July
Chula Vista, CA

Average humidity in July - Chula Vista, CA
  • Average humidity in July: 69%

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 July
Chula Vista, CA

Average rainfall in July - Chula Vista, CA
  • Average rainfall in July: 0.28"

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 July
Chula Vista, CA

Average rainfall days in July - Chula Vista, CA
  • Average rainfall days in July: 4.1 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 July
Chula Vista, CA

Average sea temperature in July - Chula Vista, CA
  • Average sea temperature in July: 67°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 July /
Average sunshine in July
Chula Vista, CA

Average daylight in July / Average sunshine in July - Chula Vista, CA
  • Average daylight in July: 14h

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 July: 12h

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 July
Chula Vista, CA

Average sunshine days in July - Chula Vista, CA
  • Average sunshine days in July: 23.9 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 July
Chula Vista, CA

Average UV index in July - Chula Vista, CA
  • Average UV index in July: 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 July
Chula Vista, CA

Average cloud cover in July - Chula Vista, CA
  • Average cloud cover in July: 11

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 July
Chula Vista, CA

Average visibility in July - Chula Vista, CA
  • Average visibility in July: 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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