July weather forecastSan Clemente, CA
July
Weather in July
July in San Clemente, California, is a moderately hot summer month, with an average temperature ranging between min 62.2°F (16.8°C) and max 75.6°F (24.2°C).Temperature
Entering July, San Clemente's average high-temperature reads a moderately hot 75.6°F (24.2°C), indicating a close resemblance to the previous month's climate. During July, the nighttime temperature averages to an enjoyable 62.2°F (16.8°C).Humidity
In San Clemente, the average relative humidity in July is 72%.Rainfall
In San Clemente, in July, during 4.3 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In San Clemente, during the entire year, the rain falls for 51.1 days and collects up to 3.66" (93mm) of precipitation.Ocean temperature
In San Clemente, California, the average seawater temperature in July is 68°F (20°C).Note: A majority do not enjoy swimming in water at 68°F (20°C). The difficulty in controlling breathing increases progressively as the temperature dips below 69.8°F (21°C).
Daylight
In San Clemente, the average length of the day in July is 14h and 7min.On the first day of the month, sunrise is at 5:44 am and sunset at 8:04 pm. On the last day of July, sunrise is at 6:02 am and sunset at 7:50 pm PDT.
Sunshine
July and August, with an average of 11.8h of sunshine, are months with the most sunshine in San Clemente.UV index
The months with the highest UV index are July through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 6 during July translates into these guidelines:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete 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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
San Clemente, CA
- Average high temperature in July: 75.6°F
The warmest month (with the highest average high temperature) is September (77.4°F).
The month with the lowest average high temperature is December (62.6°F).
- Average low temperature in July: 62.2°F
The months with the highest average low temperature are August and September (63.5°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).
Average pressure in July
San Clemente, CA
- Average pressure in July: 29.91"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in July
San Clemente, CA
- Average wind speed in July: 5mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (4.9mph).
Average humidity in July
San Clemente, CA
- Average humidity in July: 72%
The month with the highest relative humidity is June (75%).
The month with the lowest relative humidity is November (60%).
Average rainfall in July
San Clemente, CA
- Average rainfall in July: 0.24"
The wettest month (with the highest rainfall) is December (0.71").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in July
San Clemente, CA
- Average rainfall days in July: 4.3 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.4 days).
Average sea temperature in July
San Clemente, CA
- Average sea temperature in July: 68°F
The best month for swimming (with the highest average sea temperature) is August (68.3°F).
The coldest months (with the lowest average sea temperature) are January and February (58.9°F).
Average daylight in July /
Average sunshine in July
San Clemente, CA
- Average daylight in July: 14h and 6min
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 July: 11h and 48min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in July
San Clemente, CA
- Average sunshine days in July: 24.3 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in July
San Clemente, 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
San Clemente, CA
- Average cloud cover in July: 14
The months with the most cloud cover are March and May (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in July
San Clemente, 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).





