July weather forecastCosta Mesa, CA
July
Weather in July
July in Costa Mesa, California, is a warm summer month, with temperature in the range of an average high of 75°F (23.9°C) and an average low of 63.5°F (17.5°C).Temperature
Costa Mesa records an average high-temperature of a moderately hot 75°F (23.9°C) in July, closely mirroring the climate of the previous month. During July, the average low-temperature is recorded at a comfortable 63.5°F (17.5°C).Humidity
The average relative humidity in July is 72%.Rainfall
In Costa Mesa, California, during July, the rain falls for 4.4 days and regularly aggregates up to 0.24" (6mm) of precipitation. Throughout the year, there are 50.7 rainfall days, and 3.74" (95mm) of precipitation is accumulated.Daylight
In July, the average length of the day in Costa Mesa is 14h and 8min.On the first day of the month, sunrise is at 5:45 am and sunset at 8:06 pm. On the last day of July, in Costa Mesa, sunrise is at 6:03 am and sunset at 7:52 pm PDT.
Sunshine
In July, the average sunshine in Costa Mesa is 11.9h.UV index
July through September, with an average maximum UV index of 6, are months with the highest UV index in Costa Mesa. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 6 in July converts into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Costa Mesa, CA
- Average high temperature in July: 75°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in July: 63.5°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (52.3°F).
Average pressure in July
Costa Mesa, CA
- Average pressure in July: 29.92"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in July
Costa Mesa, CA
- Average wind speed in July: 5.6mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is October (5.2mph).
Average humidity in July
Costa Mesa, CA
- Average humidity in July: 72%
The month with the highest relative humidity is June (74%).
The month with the lowest relative humidity is November (59%).
Average rainfall in July
Costa Mesa, CA
- Average rainfall in July: 0.24"
The wettest month (with the highest rainfall) is December (0.79").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in July
Costa Mesa, CA
- Average rainfall days in July: 4.4 days
The month with the highest number of rainy days is March (6.6 days).
The month with the least rainy days is June (1.6 days).
Average daylight in July /
Average sunshine in July
Costa Mesa, CA
- Average daylight in July: 14h and 6min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in July: 11h and 54min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in July
Costa Mesa, CA
- Average sunshine days in July: 24.8 days
The month with the most sunshine days is June (26.5 days).
The month with the least sunshine days is February (20.5 days).
Average UV index in July
Costa Mesa, CA
- Average UV index in July: 6
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in July
Costa Mesa, CA
- Average cloud cover in July: 11
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in July
Costa Mesa, CA
- Average visibility in July: 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).
