February is one of the cooler months of the year in San Mateo, with average highs near 13.7°C and lows around 9°C (mean 11.4°C). It is a relatively wet time of year, averaging 93 mm of rainfall and 83% relative humidity across the period.
February is one of the cooler months of the year in San Mateo. Across 45 years of records, the warmest February in San Mateo was 2015 — when the month averaged 13.9°C — while the coldest was 1989 at 9°C. Typical February days reach 13.7°C with nights near 9°C. The long-term February temperature trend is broadly flat.
February is a relatively wet time of year in San Mateo, averaging 93 mm of rainfall. The wettest February on record was 1998 with 267 mm, while the driest was 2020 at 1 mm.
Relative humidity in San Mateo during February averages 83%. The most humid February was 2010 at 88%, and the least humid was 2018 at 74%.
February receives about 3.3 kWh/m²/day of solar energy in San Mateo. The sunniest February was 2022 at 4.2 kWh/m²/day, and the cloudiest was 2000 at 2.6.
Average wind speed in San Mateo during February is 3.8 m/s. The windiest February was 2019 at 5.5 m/s, while the calmest was 1995 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.4°C | 11.4°C | 11.0°C | 11.6°C | 11.5°C | +0.1°C |
| Avg High | 13.9°C | 13.7°C | 13.2°C | 13.9°C | 14.0°C | +0.1°C |
| Avg Low | 8.9°C | 9.2°C | 8.8°C | 9.3°C | 9.0°C | +0.1°C |
| Avg Rain | 90 mm | 105 mm | 103 mm | 88 mm | 70 mm | -20 mm |
February temperatures in San Mateo have stayed relatively stable across the record.
February has ranged from a record low of -0.4°C (1989) to a record high of 21.6°C (1992).
Rainfall in February is a relatively wet time of year, averaging 93 mm, with a wettest year of 267 mm.
A quieter season to visit San Mateo
If your dates are flexible, the more temperate months of September and August tend to be the most comfortable for visiting San Mateo. That said, February — with days averaging 13.7°C and nights around 9°C (mean 11.4°C) and higher rainfall (93 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 14.0°C | 11.6°C | 9.3°C | 19.5°C | 6.7°C | 148 mm | 87% | 3.7 m/s | 3.2 |
| 2024 | 14.0°C | 12.1°C | 10.2°C | 18.8°C | 8.2°C | 138 mm | 85% | 3.9 m/s | 3.1 |
| 2023 | 12.0°C | 9.7°C | 7.5°C | 16.3°C | 4.7°C | 104 mm | 81% | 4.1 m/s | 3.5 |
| 2022 | 15.0°C | 11.9°C | 8.7°C | 20.8°C | 6.0°C | 1 mm | 79% | 3.4 m/s | 4.2 |
| 2021 | 14.1°C | 11.5°C | 9.0°C | 18.4°C | 6.9°C | 27 mm | 81% | 4 m/s | 3.9 |
| 2020 | 15.0°C | 12.1°C | 9.2°C | 20.5°C | 6.1°C | 1 mm | 79% | 3.5 m/s | 4.1 |
| 2019 | 12.0°C | 10.3°C | 8.7°C | 15.0°C | 5.9°C | 205 mm | 79% | 5.5 m/s | 3 |
| 2018 | 14.6°C | 11.9°C | 9.2°C | 20.0°C | 5.1°C | 11 mm | 74% | 3.6 m/s | 4.1 |
| 2017 | 13.4°C | 11.8°C | 10.1°C | 16.5°C | 7.1°C | 210 mm | 86% | 4.5 m/s | 2.9 |
| 2016 | 16.2°C | 13.3°C | 10.4°C | 20.5°C | 6.7°C | 21 mm | 83% | 2.9 m/s | 3.9 |
| 2015 🔥 | 16.5°C | 13.9°C | 11.4°C | 20.1°C | 9.0°C | 67 mm | 84% | 3.3 m/s | 3.5 |
| 2014 | 13.9°C | 11.9°C | 10.0°C | 18.4°C | 7.5°C | 129 mm | 87% | 3.6 m/s | 3.1 |
| 2013 | 12.8°C | 10.2°C | 7.6°C | 18.6°C | 5.7°C | 14 mm | 84% | 3.5 m/s | 4 |
| 2012 | 13.3°C | 10.8°C | 8.3°C | 17.1°C | 5.4°C | 30 mm | 80% | 4.1 m/s | 3.6 |
| 2011 | 12.4°C | 9.9°C | 7.4°C | 18.0°C | 4.2°C | 102 mm | 79% | 4 m/s | 3.5 |
| 2010 | 13.4°C | 11.7°C | 9.9°C | 17.1°C | 8.4°C | 91 mm | 88% | 3.3 m/s | 2.8 |
| 2009 | 12.9°C | 10.8°C | 8.7°C | 18.2°C | 5.9°C | 170 mm | 83% | 4.2 m/s | 3.1 |
| 2008 | 12.6°C | 10.3°C | 8.0°C | 16.3°C | 6.2°C | 62 mm | 85% | 3.8 m/s | 3.4 |
| 2007 | 13.0°C | 10.9°C | 8.9°C | 19.9°C | 6.5°C | 101 mm | 85% | 4.1 m/s | 3 |
| 2006 | 13.8°C | 11.2°C | 8.7°C | 17.6°C | 5.6°C | 57 mm | 82% | 3.4 m/s | 3.5 |
| 2005 | 14.2°C | 12.2°C | 10.1°C | 17.0°C | 7.5°C | 95 mm | 84% | 3.4 m/s | 2.8 |
| 2004 | 12.6°C | 10.8°C | 8.9°C | 15.0°C | 5.3°C | 142 mm | 85% | 4.2 m/s | 3.1 |
| 2003 | 13.8°C | 11.4°C | 8.9°C | 15.6°C | 6.2°C | 53 mm | 80% | 3.6 m/s | 3.4 |
| 2002 | 13.6°C | 11.0°C | 8.3°C | 18.3°C | 5.5°C | 39 mm | 86% | 2.8 m/s | 3.5 |
| 2001 | 12.2°C | 10.1°C | 8.0°C | 17.8°C | 4.5°C | 142 mm | 81% | 4.4 m/s | 3.3 |
| 2000 | 13.3°C | 11.6°C | 9.8°C | 16.7°C | 7.6°C | 173 mm | 87% | 4.4 m/s | 2.6 |
| 1999 | 12.0°C | 10.0°C | 8.1°C | 14.6°C | 4.2°C | 127 mm | 85% | 3.8 m/s | 3 |
| 1998 🌧️ | 13.3°C | 11.7°C | 10.1°C | 15.4°C | 8.4°C | 267 mm | 83% | 5.4 m/s | 2.7 |
| 1997 | 13.6°C | 11.1°C | 8.6°C | 15.7°C | 5.9°C | 9 mm | 84% | 4.2 m/s | 3.7 |
| 1996 | 14.1°C | 12.3°C | 10.5°C | 19.4°C | 5.0°C | 120 mm | 87% | 3.9 m/s | 2.8 |
| 1995 | 14.5°C | 12.2°C | 9.9°C | 19.6°C | 6.5°C | 13 mm | 87% | 2.3 m/s | 3 |
| 1994 | 13.2°C | 11.0°C | 8.7°C | 17.0°C | 3.9°C | 103 mm | 80% | 3.8 m/s | 3.3 |
| 1993 | 13.2°C | 11.2°C | 9.1°C | 16.8°C | 5.7°C | 128 mm | 81% | 4.4 m/s | 2.9 |
| 1992 | 15.3°C | 12.9°C | 10.4°C | 21.6°C | 5.3°C | 154 mm | 84% | 4 m/s | 3.2 |
| 1991 | 15.3°C | 12.4°C | 9.6°C | 19.7°C | 7.2°C | 71 mm | 85% | 3.4 m/s | 3.1 |
| 1990 | 12.1°C | 9.5°C | 6.9°C | 18.9°C | 2.5°C | 56 mm | 80% | 4 m/s | 3.5 |
| 1989 ❄️ | 11.4°C | 9.0°C | 6.5°C | 16.4°C | -0.4°C | 28 mm | 80% | 3.5 m/s | 3.4 |
| 1988 | 15.2°C | 11.7°C | 8.3°C | 20.5°C | 3.6°C | 15 mm | 80% | 3.3 m/s | 3.6 |
| 1987 | 14.7°C | 11.9°C | 9.0°C | 21.5°C | 4.5°C | 82 mm | 77% | 4.1 m/s | 3.6 |
| 1986 | 14.8°C | 12.8°C | 10.8°C | 20.4°C | 4.4°C | 216 mm | 84% | 5 m/s | 2.9 |
| 1985 | 13.7°C | 10.8°C | 7.9°C | 18.0°C | 4.5°C | 49 mm | 81% | 3.5 m/s | 3.7 |
| 1984 | 13.4°C | 11.0°C | 8.7°C | 16.7°C | 6.7°C | 44 mm | 83% | 3.5 m/s | 3 |
| 1983 | 14.4°C | 12.6°C | 10.8°C | 16.6°C | 8.6°C | 194 mm | 82% | 4.5 m/s | — |
| 1982 | 13.2°C | 10.9°C | 8.6°C | 16.4°C | 3.2°C | 132 mm | 83% | 3.5 m/s | — |
| 1981 | 14.4°C | 11.7°C | 9.1°C | 20.0°C | 5.8°C | 45 mm | 80% | 3.3 m/s | — |
Actual recorded February data for each year, 1981–2025 — sourced from NASA POWER.
The average high in February is around 13.7°C with lows near 9°C (mean 11.4°C), based on 45 years of NASA POWER data.
February averages 93 mm of rainfall in San Mateo, a relatively wet time of year. The wettest on record was 267 mm in 1998.
The hottest February reached 21.6°C in 1992. The coldest dipped to -0.4°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average February temperatures have held steady by about 0°C. Daytime highs moved from 13.8°C to 13.8°C and overnight lows from 9°C to 8.9°C over the same span.
February is one of the cooler months of the year in San Mateo and a relatively wet time of year, so plan for around 13.7°C daytime highs and 9°C at night.
Not quite — February is the 3rd coolest month in San Mateo, averaging 11.4°C.
For February in San Mateo, pack light layers you can adjust through the day, with typical highs of 13.7°C and lows of 9°C. Bring an umbrella or light rain jacket too.
Relative humidity in February averages 83% — quite humid.
Average wind speed in February is 3.8 m/s. The windiest February on record averaged 5.5 m/s (2019).
The wettest February on record was 1998 with 267 mm. On average, February sees 93 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in San Mateo behaves each February, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for February specifically, along with year-by-year records and how the month has changed over the decades.
