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February Weather in San Mateo, United States

Last updated: June 24, 2025

In February, the average temperature in San Mateo, United States is a mild 11°C (53°F). Expect a comfortable range, with minimums dropping to 2°C (37°F) and maximums reaching up to 24°C (76°F). During this month, you'll encounter approximately 100 mm (3.9 in) of precipitation spread over 8 days, resulting in a high average humidity of 84%. Prepare for a blend of cool temps and refreshing rain!

February Temperature in San Mateo

In February in San Mateo, the average temperature is 11°C (53°F), with maximums reaching up to 24°C (76°F) and minimums dropping as low as 2°C (37°F). This mild weather makes San Mateo an ideal destination for travelers looking to enjoy comfortable outdoor activities.

February Weather in San Mateo: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in San Mateo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Mateo, February typically has an average temperature of 11°C (53°F), with highs reaching up to 24°C (76°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec525354565863636565625652
Data source: Temperature data for San Mateo generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

February Precipitation in San Mateo

In San Mateo in February, the precipitation amount is 100 mm (3.9 in) spread over the course of 8 days.

February Precipitation Trends in San Mateo

The chart displays monthly precipitation patterns in San Mateo, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In San Mateo, February typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1051008633242012244788
Data source: Precipitation data for February generated using information from the Copernicus Climate Change Service.
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February Humidity in San Mateo

In San Mateo in February, humidity is 84%. With an average temperature of 11°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a bit uncomfortable and requiring extra layers to stay warm while traveling.

February Average Humidity in San Mateo

This chart illustrates the average monthly humidity levels in San Mateo, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in San Mateo is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for February generated using information from the Copernicus Climate Change Service.

February UV Index in San Mateo

In San Mateo in February, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in San Mateo.

Maximum UV Index Levels in San Mateo for February

The chart shows the monthly maximum UV Index (UVI) for San Mateo in February, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In February, the maximum UV index in San Mateo typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109743
Data source: San Mateo February UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How February Weather in San Mateo Compares to Other Months

Weather in San Mateo varies notably across the year, with each month offering distinct climate conditions. This page compares February’s weather to other months in San Mateo, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in San Mateo, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)105 mm (4.1 inches)82%moderate
February Weather11°C (53°F)100 mm (3.9 inches)84%moderate
March Weather12°C (54°F)86 mm (3.4 inches)82%very high
April Weather13°C (57°F)33 mm (1.3 inches)78%very high
May Weather15°C (59°F)24 mm (0.9 inches)71%very high
June Weather17°C (63°F)2 mm (0.1 inches)64%extreme
July Weather17°C (63°F)0 mm (0.0 inches)58%extreme
August Weather18°C (65°F)0 mm (0.0 inches)54%very high
September Weather18°C (66°F)2 mm (0.1 inches)55%very high
October Weather17°C (63°F)24 mm (0.9 inches)62%high
November Weather13°C (56°F)47 mm (1.9 inches)78%moderate
December Weather11°C (52°F)88 mm (3.5 inches)80%moderate

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