History in Your Hands on the Medway
- Rating: Fair Beach
- Terrain: Tricky- muddy tidal river foreshore, only accessible around low water, uneven underfoot
- Level: Intermediate
- Dog friendly: Yes- dogs welcome all year round, no seasonal restrictions
- Common colours: White, green, brown
- Rare colours: Cobalt Blue, Black, Lavender, Red sea pottery
- Location: Lower Upnor, Medway, Kent
- Sat Nav: ME2 4XB (Lower Upnor car park, closest to the beach) or ME2 4UP (Upper Upnor car park- 15-minute walk)
Best For:
- Sea glass hunting
- Harbour finds
- Long beach walks
- Maritime history
Note: Upnor Beach is on the River Medway in Medway, Kent, not the Isle of Sheppey, which lies further east in the Thames Estuary. The two areas are sometimes confused because they share the same tidal waterway. Upnor is its own distinct find.
Why Upnor Beach
Let’s be honest from the start: Upnor isn’t a glass beach in the traditional sense. There’s no crashing surf here, no vast shingle strandline loaded with frosted gems. What you get instead is a narrow, muddy river foreshore on the western bank of the River Medway tidal, exposed only at low water, and thoroughly unlike anywhere else in this guide.
And that’s exactly why it belongs here.
The Medway at Upnor is one of the most historically saturated stretches of water in England. Directly across the river, where you can still make out the outline of the old slipways and wharves, stood Chatham Dockyard, one of the most important Royal Naval facilities in the world for over 400 years.
Opposite that, Upnor Castle has watched over this reach of the river since Elizabeth I ordered it built in 1559. The foreshore underfoot isn’t just mud and stones. It’s centuries of human activity, barge-building, ordnance storage, naval supply, wartime industry compressed into a narrow strip of riverbank. What washes up here is a direct result of all of that.
Finding glass at Upnor requires patience, low tides, and a willingness to get your boots genuinely dirty. Your dog absolutely does not care about any of this and will be in the mud before I’ve even got the zip-lock bags out of your pocket. If you come prepared for a slow, contemplative hunt rather than a haul, Upnor rewards you with something different, occasional pieces with real character, mixed in with clay pipe fragments, Victorian pottery, and the kind of historical flotsam that makes the Medway such a rich beachcombing stretch.
What you’ll find here
Colours commonly found: Green, brown, white
Occasional finds: Blue, Aqua, Amber, Turquoise
Rare finds: Cobalt Blue, Black, Lavender, Red
Bonus: Sea pottery (some with visible glaze patterns), clay pipe stems and bowls, fragments of Victorian stoneware, the occasional embossed bottle shard and a tidal window that keeps most people away, meaning less competition when you do go.
When to go
Timing isn’t just important at Upnor, it’s everything. This is a river foreshore, not a beach. At high tide, there is no beach. You need to arrive as the tide is ebbing and work the two to three hours either side of low water. Check tide times carefully before you set off. The tidal range on the Medway is significant, up to 6 metres on a spring tide, meaning the difference between a good low and a neap low is considerable in terms of the foreshore exposed.
The best hunting windows are around new and full moon when spring tides pull the water back furthest. After periods of sustained rainfall or river activity, fresh material can be moved and deposited along the foreshore. There’s no storm-surge advantage here, the way there is on open coast beaches.
The Medway is a river estuary and behaves differently, but high river flow after winter rain does redistribute material along the bank. Autumn and winter are quieter, and the foreshore is less picked over. Summer weekends bring dog walkers and day trippers to the village; they’re mostly there for the pubs rather than the foreshore, but quieter visits are always more productive.
Today’s tide times & Sea Glass Score
Upnor Beach sits on the western bank of the River Medway, a tidal river estuary rather than an open coast beach. The tidal range here runs to around 4–5 metres on a spring tide, which makes an enormous difference to what’s accessible: at high water the foreshore disappears entirely, and at low water a productive strip of muddy, stony riverbed is exposed.
The Medway’s semi-diurnal tidal pattern gives two lows per day, but the window around each low is relatively short. Plan to arrive on the ebb and work the foreshore as the water drops.
The widget below uses Upnor tide data, the nearest UKHO standard port, to show today’s Sea Glass Score, tide curve and best hunting window. Do not attempt to access the foreshore within two hours of high water.
Where to look on the beach
Access the foreshore from the end of the road in Lower Upnor, past The Ship and The Pier pubs, where you reach the Upnor Sailing Club. The beach opens up along the riverbank from here. You’re on the Saxon Shore Way, the long-distance coastal path that follows much of the Kent shoreline, so the route is well-walked, even if the foreshore itself is less visited.
Work the strandline carefully, which means the zone where the river deposits material as the tide retreats. Look in the gravel and stone patches rather than the clay mud, where glass will sit rather than sink. The material here hasn’t been churned by open-sea swells, so the frosting tends to be lighter than on exposed coastal beaches. Don’t dismiss pieces with less frosting than you’d expect. River glass often has a different quality from sea glass, but it is genuine and interesting nonetheless.
Keep an eye out for the WWII pillbox partway along the foreshore, a FW3/22 class box built in 1940 that has since slipped from its original position on the bank and now sits on the foreshore itself. It’s a useful landmark and a reminder of just how layered the history here is. The foreshore continues northward towards Hoo if the tide allows; that stretch is even less walked and worth exploring if you have time.
One safety note: the clay foreshore can be deceptively deep in places. Stick to the stoniest sections and don’t venture onto the mud flats. Wear boots with ankle support, not just wellies. The foreshore is not suitable for very young children without close supervision.
Difficulty Level – Intermediate
- Tidal conditions significantly affect the accessible hunting ground
- Muddy foreshore sections require careful route selection
- Productive material is scattered rather than heavily concentrated
- Success depends on reading the strandline and river deposits
- Longer walks reward those willing to explore beyond the main access point
Hunting Style – The River Explorer
Lower Upnor rewards hunters who enjoy following the shoreline and investigating changing deposits left by the tide. Work the strandline methodically, paying close attention to gravel patches, shell beds and areas where heavier material gathers. The best finds often come from careful observation rather than covering large amounts of ground.
Beach Personality
Lower Upnor feels like a journey through layers of English history. Historic warships, riverside pubs, defensive structures and centuries of maritime activity line the banks of the Medway, creating a shoreline with a story around every corner. Unlike the dramatic surf beaches of Cornwall or the North East, this is a quieter hunting ground where the river, rather than the sea, shapes the finds. Patient hunters are rewarded with pieces that feel intimately connected to the area’s long naval and trading heritage.
Dog friendly?
Yes – Upnor Beach is dog-friendly all year round, and it’s a genuinely great spot for dogs. The riverbank gives dogs space to run, the water is right there, and the general vibe of Lower Upnor is relaxed and welcoming to four-legged visitors. A word of warning: the foreshore is very muddy. Your dog will be filthy. Bring towels – plural.
The pubs in Lower Upnor are dog-friendly (though check individual policies before visiting, as these change). Lower Upnor has a lovely village atmosphere with a handful of pubs right on the waterfront that make a brilliant post-hunt stop. Check our Yappy Places listing for Lower Upnor for the most up-to-date dog-friendly recommendations in the village.
Practical information
Parking: Two free car parks. The Lower Upnor car park (ME2 4XB, off Albion Place, just past the Arethusa Centre and before the Medway Yacht Club) has around 50 spaces and is the closest option, about a 3-minute walk to the foreshore. Note that the gates are locked: 8am–9pm in summer, 8am–5pm in winter. Don’t get caught out.
The Upper Upnor car park (ME2 4UP, sometimes called Upnor Castle car park) has limited spaces and is a 15-minute walk to the beach. Street parking in Lower Upnor is possible during weekdays but difficult at weekends. The Lower Upnor car park has had occasional reports of vehicle security issues. Don’t leave valuables visible.
Toilets: Public toilets are located near the Lower Upnor car park.
Food and drink: Lower Upnor is unusually well-served for such a small village, with four pubs within a short walk of the foreshore. The Ship and The Pier are both on the waterfront in Lower Upnor. Upper Upnor has The King’s Arms and The Tudor Rose on the cobbled High Street, both with a long history of serving sailors from the Chatham fleet. All serve food. Check Yappy Places for current dog-friendly details.
Getting there without a car: Strood station (on the Southeastern mainline from London St Pancras and London Victoria) is approximately 1.5 miles from Lower Upnor. From there, it’s either a taxi or a walk. There is no direct bus to Lower Upnor; the village is small, and access is limited. Having your own transport makes life considerably easier here.
Accessibility: The car park and village street are accessible. The foreshore itself is entirely natural – uneven, stony, muddy and is not suitable for wheelchairs or buggies. The Saxon Shore Way path along the top of the sea wall is more manageable, but the foreshore is strictly boots-and-mud territory.
What to bring
- Waterproof boots with ankle support – not just wellies; the foreshore is uneven, and the mud is deeper than it looks
- A small container or zip-lock bag for your finds -pieces tend to be smaller and lighter frosting than open coast glass
- Layers and a windproof jacket – the Medway river corridor is exposed and can feel raw even on mild days
- Old clothes you don’t mind getting muddy -the foreshore will get you
- Dog towels if they are coming
- A fully charged phone with tide times pre-checked, the mobile signal in Lower Upnor can be patchy
The history behind the glass
Upnor has been tangled up with the British Navy since the 16th century. Upnor Castle was built between 1559 and 1567 on the orders of Elizabeth I to protect the naval anchorage and the dockyard facilities taking shape on the opposite bank of the Medway. For centuries, this stretch of river was one of the most strategically important in the country. The castle served as England’s leading ammunition magazine by the late 17th century, holding more gunpowder and ordnance than even the Tower of London at its peak.
The village itself had its own industry. Barge-building took place at Little’s yard beside the castle well into the Victorian era. A potter’s kiln operated at the waterfront, recorded in a 1830 watercolour now held in Rochester Guildhall Museum.
The London Stones on the Lower Upnor shoreline mark the ancient limit of London’s charter fishing rights on the Medway, with the oldest bearing the date 1204. Centuries of human activity, naval, industrial, and domestic left material in and around this river, and the tides have been slowly redistributing it ever since.
The glass and pottery you find here doesn’t have one origin story, the way Seaham does. It’s more complicated and more diffuse domestic waste from the dockyard town across the water, manufacturing offcuts, bottle glass from the various riverside industries, material moved downriver from Chatham, Rochester, and further upstream.
The Medway has always been used as a dumping ground, and centuries of that habit mean the foreshore gives up a fragment of history on every low tide, if you’re patient enough to find it.
From beach to jewellery
The Medway doesn’t give up its glass easily, which makes every piece worth keeping. At Mermaid Tears, every piece of jewellery starts with a hunt just like this one. Hand-made from UK beaches and rivers, handmade into something you’ll wear forever. Browse the collection →
Disclaimer: Tide times, dog-friendly rules, parking arrangements and beach conditions at Upnor change regularly and should always be verified before your visit. Tide gate closing times at the Lower Upnor car park are seasonal; always check current hours. The foreshore is tidal and only accessible around low water – check tides carefully before setting out. Information on this page is provided in good faith but may not reflect the most current situation.
Last updated: May 2026
Frequently asked questions
Is Upnor Beach good for sea glass hunting? It can be, but it’s a fair-rated site rather than a reliable haul beach. Upnor is a tidal river foreshore rather than an open coast beach, which means glass is occasional rather than abundant, and frosting is lighter than you’d find at a high-energy sea beach. It’s best combined with a walk, a pub stop, and low expectations, which often means you come away pleasantly surprised.
What tide do I need to visit Upnor Beach? You need a low tide. The foreshore at Upnor is only accessible when the tide is out – roughly the two to three hours either side of low water. Check tide times before you go and plan your arrival for the ebb. The nearest UKHO tidal station is Sheerness.
Where exactly is Upnor Beach? Upnor Beach is on the western bank of the River Medway in Lower Upnor, Medway, Kent – not the Isle of Sheppey, which is a separate island further east. The postcode for the closest car park is ME2 4XB. The beach is accessed at the end of the road in Lower Upnor, past the Upnor Sailing Club.
Is Upnor Beach dog-friendly all year? Yes, dogs are welcome on the foreshore all year round. The beach is muddy, and dogs tend to love it. Come prepared with towels. The village pubs are generally dog-friendly too, though check individual venues before visiting.
What else can you find at Upnor besides sea glass? The foreshore is excellent for sea pottery, including Victorian stoneware fragments and pieces with visible glaze. Clay pipe stems and bowls, some potentially centuries old, turn up regularly. The occasional embossed glass shard or bottle base with moulded lettering can make the whole hunt worthwhile. There’s also the WWII pillbox on the foreshore, which is a good photographic landmark.
Is Upnor Beach safe to visit? The foreshore is safe when treated with respect. Wear proper boots with ankle support, not just flat wellies, as the terrain is uneven and the mud can be deceptively deep in places. Don’t venture onto the exposed mud flats away from the stony sections, and always check tide times to avoid being cut off. Keep children under close supervision near the water’s edge.
