San Mateo
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San Mateo Weather in July

During July, San Mateo experiences high daytime temperatures of 24°C (75°F) and cooler nights around 14°C (57°F). As the driest month of the year, rainfall is at its lowest.

Rainfall in San Mateo in July

Expect the least amount of rain this month, providing an excellent opportunity for outdoor activities. Enjoy the clearest skies and driest conditions of the year. Typically, about 0 days will experience rainfall, with an average of 0 mm (0 in) for the month.

Temperature in San Mateo in July

July tends to be one of the excellent months in San Mateo, with 24°C (75°F) in the afternoon and 14°C (57°F) overnight. This kind of day-to-night contrast is typical for this time of year. At 14°C (57°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in San Mateo in July

There are approximately 313 hours of sunshine this month, resulting in mostly clear days.

Wind Speed in San Mateo in July

Wind speeds average 7 m/s (14 knots) during July. At this speed, you experience strong wind that can make entire trees sway and create resistance when walking. Since this is an average, expect variation from moderate windy periods to particularly gusty days when umbrellas become difficult to control.

Average water temperature in July

The water temperature is 14°C (57°F), chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

If you're a fan of comfortable temperatures and drier conditions, July is a great time to visit.

San Mateo Temperature in July

Min Temperature
14°C (57°F)
Max Temperature
24°C (75°F)
Water Temperature
14°C (57°F) *
Chance of Rain
0%
Precipitation
0 mm (0 in)
Rainy days
0 days
Humidity
75% *
Windspeed
7 m/s (14 knots) *
Sunshine
313 hours *
Percentage Sunshine
70% *
* Data from: San Francisco, the United States of America (10 KM, 6 Miles).

San Mateo Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in San Mateo - and find the best time to visit.

Best Places in the United States of America in July

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in July →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in San Mateo in July

For San Mateo in July, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. With water temperatures around 14°C (57°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in San Mateo in July

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    10/10
  • Cycling
    10/10
  • Walking
    10/10
  • Barbeque
    9/10
  • Camping
    10/10
  • Outdoor sports
    10/10

San Mateo 3-Day Forecast

Popular in July

Where to go in July - average daytime high across popular destinations.

Bucket list

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