San Mateo, CA → San Diego, CA
442 mi · 8h 49m (driving)
Current Risk
Medium Risk
Heavy rain near San Diego
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San Mateo
58°
San Benito County
52°
San Luis Obispo County
50°
Manhattan Beach
60°
San Diego
64°
Wind gusts up to 16 mph — allow extra time
Trip Briefing
4 segments · 442 mi · 8h 50m
Weather
⛅ Partly cloudy
52°F, wind 16 mph
Incidents
1
1 critical
Rest Stops
7
Restrooms, Truck svc, water
Cameras
5 live
Rest stops in this segment:
- ● Crystal Springs Safety Roadside Rest Area 🚻 🥤 🪑
- ● Love's Travel Stop
- ● TA
+ 1 more alert
Hazards Ahead
1 road closure may affect your route · 6 construction zones on route
6 Construction Zones on Route
CA-92 eastbound: Lanes 3, RShoulder of 3 closed for bridge repair between Substation 4 and Substation 6
San Mateo, CA
CA-82 southbound: Lane 1 of 2 closed for miscellaneous work between Peninsula Ave and Hilltop Rd
San Mateo, CA
CA-119: Lane 1 of 2 closed for utility work between California Aqueduct Bridge and Baker Road
Kern, CA
CA-166 eastbound: LShoulder closed for highway construction between Route 5 and Sabadan Street (South)
Kern, CA
I-5 southbound: Lane 4 of 4 closed for shoulder work between Parker Rd and Hasley Canyon Rd
Los Angeles, CA
CA-91: Lane 2 of 2 closed for bridge multiple work
Orange, CA
Traffic Cameras
See recent road conditions along your route
Images are snapshots updated periodically by state DOTs. Timestamps shown in images indicate when each photo was captured.
Choose your route:
Selected Route
Via US-101 South → I-5 South → I-210 East
Cameras shown are along this computed route
Need a custom route?
US-101 - TV426 -- US-101 : AT JSO RALSTON AV - South
Belmont, CA · SB
US-101 - TV427 -- US-101 : At Holy St - South
San Carlos, CA · SB
US-101 - TV429 -- US-101 : North of SR-84 / Woodside Road - South
Redwood City, CA · SB
US-101 - TVC65 -- US-101 : S101 at Bailey Av - South
Morgan Hill, CA · SB
CA-152 - 90 - EB SR-152 Dinosaur Point - East
Hollister, CA · EB
I-5 - FRE-5-SHIELDS AVE
Firebaugh, CA ·
I-5 - FRE-5-AT RTE 33/145 SEP - South
Coalinga, CA · SB
I-5 - KER-5-N/O RTE 58 - South
Buttonwillow, CA · SB
I-5 - KER-5-AT GRAPEVINE UC - South
Lebec, CA · SB
I-5 - I-5 : (25) Meadowdale - South
Elysian Park, CA · SB
I-5 - I-5 : (46) Los Alisos - South
Laguna Hills, CA · SB
I-5 - (C104) SB 5 : Harbor Dr - South
Oceanside, CA · SB
Live traffic on this route
Cameras, crashes and closures right now on the highways this drive uses.
Rest Stops Along Your Route
45 stops available
Swipe to see moreShowing 1-2 of 45
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⚡ Recent Weather Events on This Route
Premium users received alerts for these conditions:
- 🌧️Nov 11: Heavy rain expected near San Luis Obispo County - consider afternoon departure
- 🌫️Nov 8: Dense fog warning for morning departures - visibility below 1/4 mile
Don't miss the next alert →
The 442-mile full-day drive from San Mateo to San Diego stays within CA and takes about 8h 49m without stops. We track 12 live traffic cameras, 45 rest areas, 1 reported incident and 4 active weather alerts along this corridor so you can plan around them. Most drivers do this trip in one day; weather along the route matters more than the forecast at either endpoint, since you'll cross several climate zones.
7-Day Driving Outlook
Today
Nov 13
60° / 57°
No precip
Tomorrow
Nov 14
65° / 50°
No precip
Sun
Nov 15
64° / 52°
No precip
Mon
Nov 16
59° / 53°
No precip
Tue
Nov 17
58° / 51°
No precip
Wed
Nov 18
58° / 50°
No precip
Thu
Nov 19
55° / 51°
No precip
🗓️ Weekend Outlook
Saturday
Good to Go🌦️ Moderate rain showers at origin, 🌦️ Moderate rain showers at destination
Sunday
Good to Go🌦️ Slight rain showers at origin, ☁️ Overcast at destination
Plan This Route
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Current Conditions
San Mateo, CA
58°F
Wind: 16 mph
San Diego, CA
64°F
Wind: 12 mph
Weather data updated in real-time
Driving from San Mateo, CA to San Diego, CA
The 442-mile drive from San Mateo, California to San Diego, California takes approximately 8h 49m under normal conditions. Weather along this route can vary significantly, especially through mountainous terrain where elevation changes can bring sudden weather shifts. Route Outlook helps you find the safest time to travel by showing you weather conditions at every point along your route, timed to when you'll actually be there.
This long-distance route stays within California, connecting San Mateo and San Diego. Covering 442 miles, this is a substantial drive that will take you through diverse terrain and weather patterns. Planning ahead with real-time conditions along the entire route — not just at your destination — is essential for a safe trip.
Common Weather Hazards on This Route
- Dense fog, especially during early morning hours
- Extreme heat and dust storms in desert regions
- Flash floods during monsoon season (July through September)
Seasonal Driving Considerations
Desert driving on this route demands respect for extreme temperatures. Summer heat regularly exceeds 110°F in low-elevation stretches, stressing both vehicles and drivers. The monsoon season from July through September brings sudden flash floods that can make washes impassable within minutes. Winter is the most pleasant driving season, with mild temperatures and clear skies, though nighttime temperatures can drop below freezing in elevated desert areas.
Best Time to Drive San Mateo to San Diego
For medium-distance drives like this 442-mile route, consider starting in the early morning to arrive before afternoon storms develop. Check the 7-day forecast above to find a day with favorable conditions along the entire route.
Driving Strategy
A 442-mile drive from San Mateo to San Diego takes a significant part of the day. Plan at least one fuel and rest stop along the way. If your route crosses elevation changes or state lines, expect weather conditions to shift mid-trip. Monitor the segment-by-segment forecast rather than just checking destination weather. Starting early in the morning typically avoids afternoon storm development and rush-hour congestion near urban areas.
Pro Tip
Use Route Outlook's departure optimizer to find the best time to leave. Our 4D trajectory engine considers weather at each point along your route at the exact time you'll be there — not just at your destination. It also integrates live data from traffic cameras, DOT 511 feeds, and road weather sensors.
Frequently Asked Questions
How long is the drive from San Mateo to San Diego?
The drive is approximately 442 miles and takes about 8h 49m under normal traffic and weather conditions. Severe weather can add significant time to your trip.
What's the best day to drive this route?
Based on current forecasts, Sunday, Nov 15 looks ideal. Low chance of precipitation with manageable conditions
Is it safe to drive from San Mateo to San Diego today?
Current conditions show medium risk along this route. Consider delaying your trip if possible. If you must travel, reduce speed significantly and be prepared for rapidly changing conditions.
Are there rest areas on the San Mateo to San Diego route?
Yes, there are 45 rest areas along this route. Facilities include restrooms, parking, and in some cases picnic areas and vending machines. Rest stops are spaced throughout the drive, so you'll never be too far from a break.
Can I see live traffic cameras on this route?
Yes, Route Outlook shows 12 live traffic cameras along this route, sourced from state DOT feeds. You can check road visibility, traffic flow, and pavement conditions in real time before and during your drive.
What highways does this route use?
This route primarily uses US-101 South, CA 152, I-5 South. Conditions can vary between highway segments, so check live camera feeds and road condition reports for each stretch before departing.
Are there any road closures on this route right now?
There is currently 1 active incident along this route that may affect your drive. Check the incident details above for specific locations and expected durations.
Related Driving Guides
Finding the Safest Time to Drive: A Data-Driven Approach
Learn how 4D trajectory analysis can help you find the optimal departure time to avoid dangerous weather and traffic.
🛣️How to Check Road Conditions Before a Trip: All Your Options
A practical guide to every method for checking driving conditions--weather apps, 511 sites, traffic cameras, radio, and more. Pros, cons, and when to use each.
🧠Route Intelligence: The Smarter Way to Plan Road Trips
Stop checking weather at your destination. Start knowing what you'll actually drive through--and when. Here's how Route Intelligence changes everything.
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