San Mateo County (San Mateo)
April
Weather in San Mateo County, California for April 2027
Your guide to San Mateo County weather in April - trends and predictions
With an average of 5 rainy days, San Mateo County experiences minimal rainfall in April.
Is April a good time to visit San Mateo County? check out the best time to travel to San Mateo County page.
✨ Is April a good time to visit San Mateo County? – Ask the AI Weatherman
Rain 🌧️
More
25
Dry days
5
Rainy days
0
Snow days
16°/9°
Temperatures
18 km/h
Avg max wind
80 %
Avg humidity
San Mateo County Weather April
Move between months or click on a day
Temperatures trend during April in San Mateo County
See the weather trend as well as the moving average line
April weather in San Mateo County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Apr. 1 |  Moderate or heavy rain shower | 13° /10° | 5.7 mm | 2 | |
| Apr. 2 |  Light rain | 13° /8° | 2.8 mm | 5 | |
| Apr. 3 |  Partly cloudy | 17° /8° | 0 mm | 6 | |
| Apr. 4 |  Overcast | 21° /9° | 0 mm | 6 | |
| Apr. 5 | Overcast | 19° /10° | 0 mm | 6 | |
| Apr. 6 | Overcast | 14° /8° | 0 mm | 3 | |
| Apr. 7 |  Patchy rain possible | 14° /9° | 0.2 mm | 3 | |
| Apr. 8 | Overcast | 17° /10° | 0 mm | 4 | |
| Apr. 9 | Overcast | 18° /11° | 0 mm | 3 | |
| Apr. 10 | Overcast | 16° /11° | 0 mm | 3 | |
| Apr. 11 |  Moderate rain | 14° /10° | 17.2 mm | 2 | |
| Apr. 12 | Moderate rain | 14° /10° | 19.1 mm | 3 | |
| Apr. 13 | Overcast | 17° /9° | 0 mm | 6 | |
| Apr. 14 |  Cloudy | 16° /10° | 0 mm | 5 | |
| Apr. 15 | Overcast | 16° /10° | 0 mm | 4 | |
| Apr. 16 | Overcast | 17° /10° | 0 mm | 6 | |
| Apr. 17 | Patchy rain possible | 17° /10° | 0.2 mm | 6 | |
| Apr. 18 | Overcast | 17° /9° | 0 mm | 3 | |
| Apr. 19 | Overcast | 17° /10° | 0 mm | 4 | |
| Apr. 20 | Light rain | 17° /10° | 6.2 mm | 5 | |
| Apr. 21 | Light rain | 17° /10° | 6 mm | 4 | |
| Apr. 22 | Patchy rain possible | 15° /9° | 1 mm | 5 | |
| Apr. 23 | Overcast | 14° /10° | 0 mm | 6 | |
| Apr. 24 | Patchy rain possible | 14° /10° | 0.1 mm | 6 | |
| Apr. 25 | Patchy rain possible | 13° /10° | 0.2 mm | 3 | |
| Apr. 26 | Patchy rain possible | 14° /10° | 1.3 mm | 4 | |
| Apr. 27 | Patchy rain possible | 13° /10° | 0.5 mm | 5 | |
| Apr. 28 | Overcast | 16° /9° | 0 mm | 7 | |
| Apr. 29 | Overcast | 17° /10° | 0 mm | 7 | |
| Apr. 30 |  Mist | 18° /10° | 0 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for San Mateo County in April 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 County forecast closer to your planned date for the most up-to-date weather information.
Change Month
San Mateo County in April - FAQ
What are the expected maximum and minimum temperatures in San Mateo County during April?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in San Mateo County during April?
Moderate rainfall is anticipated in San Mateo County during April, with a total of 60.6 mm spread over approximately 5 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in San Mateo County during April?
The average wind speed in San Mateo County during April is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
April rainfall patterns in San Mateo County
Explore the daily rainfall trends and prepare for San Mateo Countys April weather 💧
Typically, San Mateo County has 5 rainy days in April with a total of 60.6 mm of rainfall.
UV exposure in San Mateo County during April
Stay informed about UV levels for safe outdoor activities throughout the month of April ☀️
Top locations in San Mateo County
Select a location for an accurate weather forecast
More Locations Quick links
More San Mateo County weather pages
You are here
Found a mistake?
We appreciate your attention to details. Tell us here.