San Mateo (CA)
May
Weather in San Mateo, California for May 2026
Your guide to San Mateo weather in May - trends and predictions
In general, the average temperature in San Mateo at the beginning of May is 16.1 °F. As the month progressed, temperatures tended to remain steady, reaching an average of 16.1 °F by the end of May.
Precipitation in San Mateo during May is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
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30
Dry days
1
Rainy days
0
Snow days
16°/10°
Temperatures
20 km/h
Avg max wind
83 %
Avg humidity
San Mateo Weather May
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Temperatures trend during May in San Mateo
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May weather in San Mateo day by day
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Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
May 1 | Overcast | 15° /9° | 0 mm | 4 | |
May 2 | Overcast | 13° /9° | 0 mm | 3 | |
May 3 | Overcast | 12° /10° | 0.1 mm | 3 | |
May 4 | Partly cloudy | 16° /9° | 0 mm | 5 | |
May 5 | Sunny | 22° /13° | 0 mm | 6 | |
May 6 | Partly cloudy | 19° /11° | 0 mm | 5 | |
May 7 | Overcast | 16° /10° | 0 mm | 4 | |
May 8 | Overcast | 18° /9° | 0 mm | 4 | |
May 9 | Overcast | 20° /10° | 0 mm | 5 | |
May 10 | Overcast | 18° /11° | 0 mm | 4 | |
May 11 | Overcast | 14° /10° | 0 mm | 3 | |
May 12 | Heavy rain at times | 14° /10° | 4 mm | 3 | |
May 13 | Overcast | 15° /10° | 0.1 mm | 4 | |
May 14 | Overcast | 17° /9° | 0 mm | 4 | |
May 15 | Overcast | 17° /10° | 0 mm | 4 | |
May 16 | Overcast | 17° /10° | 0 mm | 4 | |
May 17 | Overcast | 15° /11° | 0 mm | 4 | |
May 18 | Cloudy | 19° /9° | 0 mm | 4 | |
May 19 | Partly cloudy | 20° /11° | 0 mm | 6 | |
May 20 | Overcast | 16° /9° | 0 mm | 4 | |
May 21 | Overcast | 18° /8° | 0 mm | 4 | |
May 22 | Overcast | 15° /10° | 0 mm | 4 | |
May 23 | Overcast | 13° /9° | 0 mm | 3 | |
May 24 | Overcast | 13° /9° | 0 mm | 3 | |
May 25 | Overcast | 11° /9° | 0 mm | 3 | |
May 26 | Overcast | 16° /10° | 0 mm | 4 | |
May 27 | Mist | 16° /9° | 0 mm | 4 | |
May 28 | Mist | 13° /10° | 0 mm | 3 | |
May 29 | Mist | 18° /10° | 0 mm | 4 | |
May 30 | Mist | 20° /11° | 0 mm | 5 | |
May 31 | Mist | 19° /10° | 0 mm | 4 | |
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Important Notice
Our weather forecast for San Mateo in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the San Mateo forecast closer to your planned date for the most up-to-date weather information.
Change Month
San Mateo in May - FAQ
What are the expected maximum and minimum temperatures in San Mateo during May?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in San Mateo during May?
Rainfall in San Mateo during May is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in San Mateo during May?
The average wind speed in San Mateo during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in San Mateo
Explore the daily rainfall trends and prepare for San Mateos May weather 💧
UV exposure in San Mateo during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Quick links
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Get accurate weather forecasts for San Mateo, located at latitude 37.563 and longitude -122.326. Stay updated with localized weather information tailored for San Mateo.
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