Sunday
The best time to drive the M23 on a Sunday
On a Sunday the M23 is quietest at 06:00, averaging 61 mph, and busiest at 11:00, averaging 58 mph. Measured from National Highways roadside sensors between 1 May 2026 and 15 June 2026, not estimated.
- Measured, not estimated
- 1 May 2026 to 15 June 2026
Every hour of a Sunday
Darker means slower- 00:0059mphnormal speed
- 01:0060mphnormal speed
- 02:0059mph4% below normal
- 03:0059mph4% below normal
- 04:0060mphnormal speed
- 05:0061mphnormal speed
- 06:0061mphnormal speed
- 07:0061mphnormal speed
- 08:0061mphnormal speed
- 09:0060mphnormal speed
- 10:0058mph5% below normal
- 11:0058mph6% below normal
- 12:0058mph5% below normal
- 13:0059mph3% below normal
- 14:0060mphnormal speed
- 15:0060mphnormal speed
- 16:0060mphnormal speed
- 17:0060mphnormal speed
- 18:0061mphnormal speed
- 19:0061mphnormal speed
- 20:0061mphnormal speed
- 21:0060mphnormal speed
- 22:0060mphnormal speed
- 23:0060mphnormal speed
That is about the same as the M23 runs on an average day. Hours outside 06:00 to 22:00 are shown but greyed: the small hours are the fastest on almost every road in England, which is true and useless for planning. Averaged across 12 sensors on the M23.
Minutes you save on a Sunday
Quietest against busiest hour61 mph49 min
58 mph52 min
3 minsaved on a 50-mile trip
Other trip lengths: 10 miles saves 0 min, 25 miles saves 1 min. Worked out from the average speed along the whole M23 at each hour, so a trip through its worst junction at rush hour loses more than this.
Questions about the M23 on a Sunday
What is the best time to drive the M23 on a Sunday?
On a Sunday the quietest hour on the M23 is 06:00, when traffic averages 61 mph. That is a measured average from National Highways roadside sensors on the road itself, recorded between 1 May 2026 and 15 June 2026, rather than an estimate. Only 06:00 to 22:00 is considered, because the small hours are the fastest on almost every road in England and saying so helps nobody plan a journey. Roadworks, collisions and weather are not in the average, so it describes what this Sunday usually looks like rather than what today will look like.
What time is the M23 busiest on a Sunday?
The busiest hour on the M23 on a Sunday is 11:00, averaging 58 mph, about 6% below the speed the road runs at when it is clear. The comparison is against this road's own free-flowing speed, so "slower" means slower than the M23 normally manages rather than slower than some national figure. Measured from roadside sensors between 1 May 2026 and 15 June 2026. It is an archive of the usual pattern, not a live reading, so check conditions before you set off.