PJs Guide to The Severn Bore

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The funnel-shape of the Bristol Channel is perfect for the formation of tidal bores in the upper reaches of the Severn Estuary near Gloucester. The high tide (especially spring tides) enter the river as a wall of water called a bore. This then breaks like a wave against the banks or in the shallow parts of the river.

Tidal bores also occur in the Petitcodiac River at the northern end of the Bay of Fundy, in the Amazon River in Brazil, and in the Fuchun Jiang in China (reported to have the biggest bore wave at around 15-20 feet) as well as some other European rivers

Where to watch or ride the bore


Newnham is the first stop to see the bore. As the bore travels about 5 - 10 mph, after the bore has passed you have plenty of time to drive to Minsterworth to see it pass there and then to continue on. Probably the best place to view the bore is at Overbridge where you can stand on the bridge and watch it travel under the bridge and up river.

Riding the bore

As riding the bore is popular, you will find yourself jostling with a number of canoeists, jet skis, inflatables and other surfers in the river while waiting for the bore to arrive. Because the bore wave is slow and weak catching it can be a problem even if you have a longboard.

If you do catch it you will find yourself line abreast with the other lucky contenders (between 6 and 10 people) moving forward. As the bore travels up river around corners the wave surges from one bank to another and you need to be where the concentration of the surge occurs to ride the bore any distance.

The ugly part of bore riding is after you lose the bore and you are being towed along with all the debris (trees, plastic rubbish and dead animals!) that gets sucked along behind. You have to approach the muddy bank (in the 10mph current) and grab a hold and pull yourself up on the bank - yuck, yuck, yuck. But if you are quick you can run back to your truck, race up the road and catch it again!

Maisemore is only of significance as there is a weir which the bore cannot pass and so the bore ends here.

Severn Bore Times for 2004

The bore can come up to 30 minutes early or 30 minutes late depending on weather conditions that day. Make sure you get there early, be alert and don't get caught out! - Only one wave...

Month Date Day Newnham Severn Bore Pub Minsterworth Stonebench Over Bridge Tide (m) Sun Rise/Set Outlook
Feb 21 Sat 0747 0842 0847 0902 0922 12.6 0719 AA

22 Sun 0825 0920 0925 0940 1000 12.7 0717 AA
Mar 21 Sun 0726 0821 0826 0841 0901 12.5 0615 AA

22 Mon 0800 0855 0900 0915 0935 12.6 0613 AA
Apr 6 Tue 0835 0930 0935 0950 1010 12.9 0639 AAA

7 Wed 0912 1007 1012 1027 1047 13.0 0636 AAA

8 Thu 0951 1046 1051 1106 1126 12.9 0634 AA
May 5 Wed 0808 0903 0908 0923 0943 12.8 0539 AA

6 Thu 0850 0945 0950 1005 1025 12.9 0537 AAA
Aug 31 Tue 0844 0939 0944 0959 1019 12.6 0626 AA
Sep 1 Wed 0922 1017 1022 1037 1057 12.7 0628 AA

29 Wed 0821 0916 0921 0936 0956 12.6 0713 AA

30 Thu 0855 0950 0955 1010 1030 12.7 0715 AAA
Oct 15 Fri 0820 0915 0920 0935 0955 12.8 0740 AA

16 Sat 0906 1001 1006 1021 1041 12.9 0742 AAA

All times are corrected for BST or GMT. Tide heights are for Swansea (our tide tables)

These are predicted to be the best bores for riding. Just because a bore is predicted does not mean it will arrive. Weather conditions play a major part in the size of bore that comes up the river. Unfortunately 2004 is not predicted to be a good year for bores.

AAA are predicted to be the best bores of 2004