March 12 is generally a great time to visit San Diego. While there is a slight chance of rain (24%), showers are usually brief. Expect comfortable 18°C weather. You'll find plenty of company in San Diego this month as tourism activity remains quite robust.
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Essential Travel Info for San Diego
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Connect
The most common area code for San Diego ...
Safety
Moderate Safety
GPI: 2.44
San Diego Weather Forecast for March 12
"Mild & Comfortable. Expect average highs of 17.6°C. 24% chance of rain."
What to Wear in San Diego in March
Based on historical data for March 12, San Diego typically experiences temperatures between 10.3°C and 17.6°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (24% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for San Diego
Smart Suitcase
- Light Jacket
- Long Pants
Average High
17.6°C
Daytime Peak
Average Low
10.3°C
Nighttime Low
Feels Like
17.6°C
🌤️ Feels accurate
Rain Chance
24%
Avg 1mm if it rains
Cloud Cover
46%
Overcast
Pressure
1017 hPa
Low volatility
San Diego Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 93% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
06:00 - 10:00
16:00 - 17:00
Type I-II
🔴 24 min to burn
Type III-IV
🟡 36 min to burn
Type V-VI
🟢 60 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
13.9°C
Pleasant
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in United States
Flight Traffic
Busy
75/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~335
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in San Diego
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:04
☀️ Noon
11:59
🌇 Sunset
17:55
⏱️ Daylight
11h 51m
Wind Speed
15.4 km/h
Gentle breeze
Sunshine
9.3 hrs
Direct Sun (Cloud-free)
Humidity
79%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for San Diego
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in San Diego
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟢 Moderate
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Moderate seismic activity. Occasional tremors possible.
Eastern Pacific Hurricane Risk
Season: May - Nov
Travel Alert: This region has elevated natural risks. We recommend registering with your embassy and keeping emergency numbers handy.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, San Diego on March 12 averages 17.6°C with a 24% precipitation probability. Wedding/Outdoor Event Score: 92/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
San Diego Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
March 18
17.9°C • 13% rain
Score
100
March 19
18°C • 14% rain
Score
100
March 17
17.9°C • 15% rain
Score
96
💡 Moving your event by a few days could significantly improve weather conditions
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📍 Is San Diego Worth Visiting on March 12?
Planning a trip to San Diego on March 12? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 17.6°C with a 24% historical precipitation risk.
✈️ Travel Logistics: Approximately 335 landing slots available daily during this period, indicating manageable crowd levels.
🌊 Coastal Conditions: Water temperature averages 15.2°C (polar plunge). Wave conditions are generally fun waves with heights around 1.12m.
📊 Historical Extremes: The hottest March 12 recorded in the last 30 years saw temperatures hit 21.2°C in 2022, while the coldest dropped to 6.4°C in 2022.