Live M3 Traffic Cameras — London to Southampton, Updated in Real Time

Check live M3 traffic cameras before you travel between London and the south coast. We currently stream 60 camera feeds covering the M3 from Junction 1 near Sunbury to Junction 14 near Winchester, refreshed roughly every minute. Below you'll find live route weather, any approved hazard reports, and the full camera grid by junction.

About the M3 Motorway

The M3 runs roughly 60 miles from Sunbury-on-Thames in Surrey to Southampton, passing through Fleet, Basingstoke, and Winchester along the way. It's the main artery for traffic heading to the south coast, Southampton's port, and connections to the M27 towards Portsmouth. One of its most notable features is the Twyford Down cutting near Winchester — a deep chalk cutting built in the 1990s that remains one of the most debated road construction projects in UK history due to its environmental impact near the historic water meadows.

Why Check M3 Traffic Cameras Before You Travel

Live camera access lets you:

  • Check conditions before port or coastal travel — the M3 feeds into the M27 towards Southampton and Portsmouth
  • Avoid the Fleet and Basingstoke commuter squeeze — this stretch sees heavy peak-hour traffic
  • Spot weather-related risk early — the Twyford Down cutting and open Hampshire stretches can see reduced visibility in fog or heavy rain
  • Confirm active hazards — verify reported incidents before rerouting

M3 Live Weather & Road Conditions

Our route weather snapshot is calculated from the geolocated positions of all 60 M3 cameras, giving a real average condition across the route rather than a single-point forecast.

Live route weather

M3 Weather & Driving Conditions
12.6°C Overcast

Updated 05:00 UK time

Feels like 11.1°C
Rain next 3 hours 2%
Wind 5.8 mph N
Visibility 16 miles
Generally good conditions

No significant weather-related driving risk is indicated for this route snapshot.

06:00 Overcast · 2% rain
13°
07:00 Drizzle · 2% rain
12°
08:00 Overcast · 2% rain
12°
Route snapshot calculated from 60 geolocated cameras. Weather data by Open-Meteo

Active M3 Road Hazards

Approved driver reports for this route.

Report a Hazard
No approved active hazards are currently listed for M3.

M3 Camera Coverage by Junction

Browse M3 traffic cameras by junction below, from J1 near Sunbury to J14 near Winchester. Each camera updates automatically and shows its current online status.

No northbound / eastbound / clockwise cameras are currently available for M3.
No southbound / westbound / anticlockwise cameras are currently available for M3.

Frequently Asked Questions

How many M3 traffic cameras are there?

There are currently 60 live camera feeds covering the M3, from Junction 1 to Junction 14.

How often do M3 camera images update?

Camera feeds refresh approximately every minute, giving a near real-time view of current traffic conditions.

Does the M3 connect to Southampton and the M27?

Yes. The M3 terminates near Southampton, connecting to the M27, which serves Southampton's port and continues towards Portsmouth.

What is the Twyford Down cutting on the M3?

Twyford Down is a deep chalk cutting near Winchester, built as part of the M3's extension in the early 1990s. It remains one of the UK's most well-known road construction controversies due to its impact on the surrounding water meadows and countryside.

Is there a live incident or hazard report for the M3 today?

Yes — our Active M3 Road Hazards section above shows any approved driver-submitted reports in real time. If none are listed, no hazards are currently confirmed.

What are the busiest sections of the M3?

The stretch through Fleet and Basingstoke sees the heaviest commuter traffic, particularly during weekday peak hours.