Live Weather & Forecast
Weather in San Ysidro
California, United States · Real-time conditions & 3-day outlook
15°C
Feels like 15°C
59°F / Feels 59°F
Light rain
San Ysidro, California
🌙 Nighttime
Updated: 2026-04-12 22:45
Humidity
93%
Wind
7.9 km/h WNW
Wind Gust
10.3 km/h
Pressure
1018 mb
Visibility
8 km
UV Index
0
(Low)
Precipitation
0.02 mm
Cloud Cover
100%
Dew Point
13.3°C
Wind Degree
281°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
148.9 μg/m³
NO₂
12.3 μg/m³
O₃
53 μg/m³
SO₂
3.3 μg/m³
PM 2.5
7.4 μg/m³
PM 10
9.5 μg/m³
Today's Hourly Forecast
24-hour breakdown for San Ysidro, California
12 AM
14°
Clear
1 AM
14°
Clear
2 AM
14°
Clear
3 AM
14°
Patchy rain nearby
4 AM
14°
Patchy rain nearby
5 AM
14°
Clear
6 AM
14°
Cloudy
7 AM
14°
Light drizzle
8 AM
15°
Patchy light drizzle
9 AM
16°
Sunny
10 AM
18°
Sunny
11 AM
19°
Partly Cloudy
12 PM
20°
Overcast
1 PM
20°
Partly Cloudy
2 PM
21°
Partly Cloudy
3 PM
20°
Partly Cloudy
4 PM
19°
Cloudy
5 PM
19°
Cloudy
6 PM
19°
Sunny
7 PM
18°
Sunny
8 PM
17°
Clear
9 PM
16°
Clear
10 PM
15°
Light rain
11 PM
16°
Overcast
3-Day Forecast
Daily overview for San Ysidro, California
Today
Patchy rain nearby
21°
/
13°
🌧️ 88% chance of rain
💧 Avg. humidity: 75%
💨 Max wind: 23 km/h
🌧️ Total precip: 1.09 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:22 AM
🌇 Sunset: 07:16 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Patchy rain nearby
18°
/
14°
🌧️ 70% chance of rain
💧 Avg. humidity: 69%
💨 Max wind: 24.5 km/h
🌧️ Total precip: 1.02 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:20 AM
🌇 Sunset: 07:17 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Cloudy
20°
/
13°
🌧️ 0% chance of rain
💧 Avg. humidity: 73%
💨 Max wind: 17.3 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:19 AM
🌇 Sunset: 07:17 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit San Ysidro
Plan your trip to San Ysidro, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in San Ysidro?
Current conditions in San Ysidro: Light rain, temperature 15°C, humidity 93%.
What is the best time to visit San Ysidro?
The best time to visit San Ysidro is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in San Ysidro?
San Ysidro is located at approximately 32.6° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in San Ysidro?
The wettest period in San Ysidro is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to San Ysidro?
For visits to San Ysidro during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is San Ysidro in?
San Ysidro is located in United States, in the state of California.
What are the public holidays in San Ysidro in 2026?
View the 2026 public holidays for San Ysidro on our Holidays page.
What are the GPS coordinates used for the weather forecast in San Ysidro?
The weather forecast for San Ysidro uses coordinates 32.552, -117.0431.