Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
The transition into July shows a subtle variation to a still pleasant 70.9°F (21.6°C) from June's 68.5°F (20.3°C) in the average high-temperature. San Mateo throughout July, records an average low-temperature of 54.7°F (12.6°C).Humidity
The average relative humidity in July in San Mateo is 75%.Rainfall
June through August are months without rainfall in San Mateo.Daylight
In San Mateo, the average length of the day in July is 14h and 27min.On the first day of the month, sunrise is at 5:52 am and sunset at 8:34 pm. On the last day of July, in San Mateo, California, sunrise is at 6:13 am and sunset at 8:18 pm PDT.
Sunshine
July has the most sunshine of the year in San Mateo, with an average of 12h of sunshine.UV index
June through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In July, the maximum UV index of 5 suggests this advice:
Make use of precautions - It is urged to ward off sun damage. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What is the average July temperature in San Mateo?
What is the average humidity in July in San Mateo?
What is the driest month in San Mateo?
How many hours of daylight does San Mateo have in July?
When is the sunrise / sunset in July in San Mateo?
What month has the most sunshine in San Mateo?
How long on average sun shines in July in San Mateo?
What are the months with the highest UV index in San Mateo?
What is the UV index reading in July in San Mateo?
Average temperature in July
San Mateo, CA
- Average high temperature in July: 70.9°F
The warmest months (with the highest average high temperature) are August and September (71.2°F).
The month with the lowest average high temperature is December (55.8°F).
- Average low temperature in July: 54.7°F
The month with the highest average low temperature is September (56.7°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in July
San Mateo, CA
- Average pressure in July: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in July
San Mateo, CA
- Average wind speed in July: 6mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest months (with the lowest average wind speed) are August, September and October (5.9mph).
Average humidity in July
San Mateo, CA
- Average humidity in July: 75%
The months with the highest relative humidity are March and August (76%).
The months with the lowest relative humidity are October and November (70%).
Average rainfall in July
San Mateo, CA
- Average rainfall in July: 0"
The wettest month (with the highest rainfall) is February (0.55").
The driest months (with the least rainfall) are June, July and August (0").
Average rainfall days in July
San Mateo, CA
- Average rainfall days in July: 0.3 days
The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is July (0.3 days).
Average daylight in July /
Average sunshine in July
San Mateo, CA
- Average daylight in July: 14h and 3min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in July: 12h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in July
San Mateo, CA
- Average sunshine days in July: 30.4 days
The month with the most sunshine days is July (30.4 days).
The month with the least sunshine days is February (23.3 days).
Average UV index in July
San Mateo, CA
- Average UV index in July: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and December (UV index 3).
Average cloud cover in July
San Mateo, CA
- Average cloud cover in July: 11
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in July
San Mateo, 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).
San Mateo, California, USA
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