Best Time to Drive from South San Francisco to Napa

Right now (6:51 pm PDT): about 86 minutes via I-80 East and US-101 North, usually 62 at this time.

Only 62% of this drive is measured by working traffic sensors right now. The rest is estimated from nearby sensors, typical speeds and street traffic, so times can be off. Why so few sensors work.

Typical drive time by departure time

Minutes from South San Francisco to Napa by day and time you leave (local time)
Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	57	63	69	75	72	66	66	65	65	66	77	77	81	72	61	59	58
Tue	58	63	69	76	73	65	64	64	64	66	77	84	89	78	62	60	58
Wed	57	63	70	75	74	67	65	65	64	66	78	88	94	81	64	60	58
Thu	57	63	70	77	74	68	66	66	64	67	77	89	96	83	66	61	58
Fri	57	61	64	68	66	65	66	67	70	78	90	96	95	79	66	60	58
Sat	58	57	58	58	60	62	67	67	69	69	69	68	66	62	61	60	59
Sun	58	57	57	57	58	60	63	65	66	67	64	63	62	60	62	60	58

About this drive

On weekdays the 57-mile drive from South San Francisco to Napa (via I-80 East and US-101 North) usually takes as little as 57 minutes and up to 99 minutes, when leaving around 4:30 pm on Fridays. The fastest times to leave are before 6:30 am or after 7:30 pm. Midday (11 am to 2 pm) it takes about 66 minutes. On weekends it is slowest around 1 pm on Saturdays (69 minutes).

About 42 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 15 miles surface streets (21 to 31 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central South San Francisco to central Napa along the route on the map. Starting or ending elsewhere in a big city can add or save several minutes.

Simulated from typical freeway speeds at each point of the drive for the time you would reach it, from every 5-minute reading we have recorded. We don't have sensors on surface streets yet, so the time on them is estimated from how congested the freeways around each end of the drive are at that time, in both directions: streets jam when the freeways do.

Questions

What is the best time to drive from South San Francisco to Napa?

On weekdays, leave before 6:30 am or after 7:30 pm. The drive usually takes about 57 minutes then, versus up to 99 minutes at the worst times.

How long does it take to drive from South San Francisco to Napa?

The 57-mile drive usually takes 57 to 99 minutes on weekdays, depending on when you leave, and about 66 minutes midday.

When is traffic worst from South San Francisco to Napa?

Leaving around 4:30 pm on Fridays is usually slowest, about 99 minutes.

Freeways on this drive

I-80 East in Bay Area (31 miles) · US-101 North in Bay Area (10 miles)

Bay Area traffic right now · Bay Area traffic tomorrow

More drives

Napa to South San Francisco (return trip) · South San Francisco to Stockton · South San Francisco to Santa Rosa · South San Francisco to Concord · South San Francisco to Vallejo · South San Francisco to Fairfield · South San Francisco to Antioch · South San Francisco to San Mateo · South San Francisco to Vacaville · South San Francisco to San Leandro · South San Francisco to Livermore · South San Francisco to Tracy

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	57	63	69	75	72	66	66	65	65	66	77	77	81	72	61	59	58
Tue	58	63	69	76	73	65	64	64	64	66	77	84	89	78	62	60	58
Wed	57	63	70	75	74	67	65	65	64	66	78	88	94	81	64	60	58
Thu	57	63	70	77	74	68	66	66	64	67	77	89	96	83	66	61	58
Fri	57	61	64	68	66	65	66	67	70	78	90	96	95	79	66	60	58
Sat	58	57	58	58	60	62	67	67	69	69	69	68	66	62	61	60	59
Sun	58	57	57	57	58	60	63	65	66	67	64	63	62	60	62	60	58

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	57	63	69	75	72	66	66	65	65	66	77	77	81	72	61	59	58
Tue	58	63	69	76	73	65	64	64	64	66	77	84	89	78	62	60	58
Wed	57	63	70	75	74	67	65	65	64	66	78	88	94	81	64	60	58
Thu	57	63	70	77	74	68	66	66	64	67	77	89	96	83	66	61	58
Fri	57	61	64	68	66	65	66	67	70	78	90	96	95	79	66	60	58
Sat	58	57	58	58	60	62	67	67	69	69	69	68	66	62	61	60	59
Sun	58	57	57	57	58	60	63	65	66	67	64	63	62	60	62	60	58

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	57	63	69	75	72	66	66	65	65	66	77	77	81	72	61	59	58
Tue	58	63	69	76	73	65	64	64	64	66	77	84	89	78	62	60	58
Wed	57	63	70	75	74	67	65	65	64	66	78	88	94	81	64	60	58
Thu	57	63	70	77	74	68	66	66	64	67	77	89	96	83	66	61	58
Fri	57	61	64	68	66	65	66	67	70	78	90	96	95	79	66	60	58
Sat	58	57	58	58	60	62	67	67	69	69	69	68	66	62	61	60	59
Sun	58	57	57	57	58	60	63	65	66	67	64	63	62	60	62	60	58