March weather forecast and climate
San Mateo, CA

A breathtaking view of the scenic spot of the Devil
A breathtaking view of the scenic spot of the Devil's Slide Sheer Cliff over the pacific Coast in San Mateo, California

Weather in March

March, the first month of the spring, in San Mateo, is still a mild month, with average temperature ranging between max 59.2°F (15.1°C) and min 47.7°F (8.7°C).

Temperature

In March, the average high-temperature is almost the same as in February - a still mild 59.2°F (15.1°C). In March, in San Mateo, California, the average low-temperature is 47.7°F (8.7°C).

Humidity

March and August, with an average relative humidity of 76%, are most humid months.

Rainfall

In San Mateo, California, during March, the rain falls for 6.8 days and regularly aggregates up to 0.35" (9mm) of precipitation. Throughout the year, there are 32.6 rainfall days, and 2.13" (54mm) of precipitation is accumulated.

Daylight

In San Mateo, the average length of the day in March is 12h.

Sunshine

In March, the average sunshine is 7.9h.

UV index

In March, the average daily maximum UV index in San Mateo is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: In March, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
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FAQ

What is the most humid month in San Mateo?

March and August, with an average relative humidity of 76%, are most humid months.

What is the average humidity in March in San Mateo?

In San Mateo, the average relative humidity in March is 76%.

How many days does it rain in March in San Mateo?

In San Mateo, California, in March, it is raining for 6.8 days, with typically 0.35" (9mm) of accumulated precipitation.

How many hours of daylight does San Mateo have in March?

The average length of the day in March is 12h.

How many hours of sunshine does San Mateo have in March?

In March, the average sunshine is 7.9h.

What is the UV index reading in March in San Mateo?

In March, the average daily maximum UV index in San Mateo is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to the UV radiation.

Average temperature in March
San Mateo, CA

Average temperature in March - San Mateo, CA
  • Average high temperature in March: 59.2°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 March: 47.7°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).

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Average pressure in March
San Mateo, CA

Average pressure in March - San Mateo, CA
  • Average pressure in March: 30.07"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is September (29.92").

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Average wind speed in March
San Mateo, CA

Average wind speed in March - San Mateo, CA
  • Average wind speed in March: 7.7mph

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).

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Average humidity in March
San Mateo, CA

Average humidity in March - San Mateo, CA
  • Average humidity in March: 76%

Months with the highest relative humidity are March and August (76%).
Months with the lowest relative humidity are October and November (70%).

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Average rainfall in March
San Mateo, CA

Average rainfall in March - San Mateo, CA
  • Average rainfall in March: 0.35"

The wettest month (with the highest rainfall) is February (0.55").
The driest months (with the least rainfall) are June, July and August (0").

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Average rainfall days in March
San Mateo, CA

Average rainfall days in March - San Mateo, CA
  • Average rainfall days in March: 6.8 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).

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Average daylight in March /
Average sunshine in March
San Mateo, CA

Average daylight in March / Average sunshine in March - San Mateo, CA
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in March: 7.9h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in March
San Mateo, CA

Average sunshine days in March - San Mateo, CA
  • Average sunshine days in March: 23.8 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).

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Average UV index in March
San Mateo, CA

Average UV index in March - San Mateo, CA
  • Average UV index in March: 4

Months with the highest UV index are June, July, August and September (UV index 5).
Months with the lowest UV index are February and December (UV index 3).

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Average cloud cover in March
San Mateo, CA

Average cloud cover in March - San Mateo, CA
  • Average cloud cover in March: 35

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 11).

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Average visibility in March
San Mateo, CA

Average visibility in March - San Mateo, CA
  • Average visibility in March: 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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