July weather forecast and climate
La Jolla, CA

Weather in July

July in La Jolla, California, is a warm summer month, with average temperature fluctuating between 63.9°F (17.7°C) and 77.5°F (25.3°C).

Temperature

In La Jolla, the average high-temperature in July is practically the same as in June - a moderately hot 77.5°F (25.3°C). The average low-temperature, in La Jolla, is 63.9°F (17.7°C).

Humidity

The average relative humidity is 69%.

Rainfall

In La Jolla, California, during July, the rain falls for 4.7 days and regularly aggregates up to 0.43" (11mm) of precipitation. In La Jolla, California, during the entire year, the rain falls for 57.9 days and collects up to 7.48" (190mm) of precipitation.

Ocean temperature

In La Jolla, the average water temperature is 67.1°F (19.5°C).
Note: 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).

Daylight

In July, the average length of the day in La Jolla is 14.1h.

Sunshine

July has the most sunshine of the year in La Jolla, with an average of 12h of sunshine.

UV index

Months with the highest UV index in La Jolla are July through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV rays for ordinary individuals.
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. 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. 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 temperature in July in La Jolla?

In July, in La Jolla, California, the average high-temperature is 77.5°F (25.3°C), and the average low-temperature is 63.9°F (17.7°C).

What is the average humidity in July in La Jolla?

In La Jolla, the average relative humidity in July is 69%.

How much does it rain in La Jolla in July?

In La Jolla, in July, during 4.7 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

What is the ocean temperature in July in La Jolla?

In La Jolla, California, in July, the average water temperature is 67.1°F (19.5°C). 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).

What is the average length of the day in July in La Jolla?

In July, the average length of the day is 14.1h.

What month has the most sunshine in La Jolla?

July has the most sunshine of the year in La Jolla, with an average of 12h of sunshine.

How many hours of sunshine does La Jolla have in July?

In La Jolla, California, the average sunshine in July is 12h.

When is the highest UV index in La Jolla?

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

How high is the UV index in July in La Jolla?

In La Jolla, the average daily maximum UV index in July 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 July
La Jolla, CA

Average temperature in July - La Jolla, CA
  • Average high temperature in July: 77.5°F

The warmest month (with the highest average high temperature) is August (79.3°F).
The month with the lowest average high temperature is December (63.5°F).

  • Average low temperature in July: 63.9°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (50.2°F).

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Average pressure in July
La Jolla, CA

Average pressure in July - La Jolla, 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
La Jolla, CA

Average wind speed in July - La Jolla, CA
  • Average wind speed in July: 5.3mph

The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).

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Average humidity in July
La Jolla, CA

Average humidity in July - La Jolla, CA
  • Average humidity in July: 69%

Months with the highest relative humidity are May and June (71%).
The month with the lowest relative humidity is November (57%).

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Average rainfall in July
La Jolla, CA

Average rainfall in July - La Jolla, CA
  • Average rainfall in July: 0.43"

The wettest month (with the highest rainfall) is February (1.46").
The driest month (with the least rainfall) is June (0.12").

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Average rainfall days in July
La Jolla, CA

Average rainfall days in July - La Jolla, CA
  • Average rainfall days in July: 4.7 days

The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (2.2 days).

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Average sea temperature in July
La Jolla, CA

Average sea temperature in July - La Jolla, 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
La Jolla, CA

Average daylight in July / Average sunshine in July - La Jolla, CA
  • Average daylight in July: 14.1h

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: 6.8h).

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Average sunshine days in July
La Jolla, CA

Average sunshine days in July - La Jolla, CA
  • Average sunshine days in July: 21.2 days

The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is February (20.2 days).

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Average UV index in July
La Jolla, CA

Average UV index in July - La Jolla, CA
  • Average UV index in July: 6

Months with the highest UV index are 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
La Jolla, CA

Average cloud cover in July - La Jolla, CA
  • Average cloud cover in July: 10

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
La Jolla, CA

Average visibility in July - La Jolla, 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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