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Bosham Tide Times

Bosham tide times and Shore Road flood risk

When Does Shore Road in Bosham Flood?

Shore Road in Bosham can flood around larger high tides. This page is for residents and visitors deciding when the road may be at risk: walkers, photographers, people parking by the water, and anyone staying nearby.

BoshamTide uses Admiralty tide predictions to estimate when water may cover the road. High-water times and heights come from the UK Hydrographic Office via the Admiralty API, shown in metres above Chart Datum. The live answer is at the top of this page; the rest explains how to read it. For moving a car in time, see the Bosham parking guide.

LIVE SHORE ROAD STATUS

Is Shore Road likely to flood today?

Saturday, 10 October 2026

Flooding likely

NEXT HIGH TIDE
12:14 4.9m
PARKING RISK
SAFE TO PARK until 09:13
ESTIMATED FLOOD WINDOW
09:13–14:08

BOSHAMTIDE.COM

NEXT TIDE THAT MAY FLOOD SHORE ROAD

DATE
Saturday, 10 October 2026
HIGH TIDE
12:14
PREDICTED HEIGHT
4.9m Chart Datum
EXPECTED FLOOD WINDOW
09:13–14:08

Estimated from Admiralty tide predictions. Always check conditions on arrival.

Today's Bosham high tides

Today's Bosham high tide times, heights and Shore Road flood status
TIMEHEIGHTSHORE ROAD
12:144.9mFloods 09:13–14:08

TODAY & TOMORROW

NEXT FLOOD 09:13 – 14:08

TODAYTOMORROW
NOW
00:0006:0012:0018:0000:0006:0012:0018:0000:00
ParkableRoad likely under waterAlready passed

WATER LEVEL

METERS

6m5m4m3m2m1m0m
FLOOD
MAX
NOW: 1.0m
MAX: 4.9m
Current
Flood zone

NEXT TIDES

HIGH TIDE12:144.9m
LOW TIDE-
NEXT HIGH00:224.7m

TIDE TYPE

Spring tide

TIDE CONTEXT (24H)(INDICATIVE)

FLOOD WINDOW 09:13 – 14:08

←Swipe to scroll→
FLOOD1m2m3m4m00:0006:0012:0018:0024:00NOWPROJECTEDFLOOD WINDOW

Visiting Bosham?

Check the tide before parking or walking along Shore Road. Larger high tides can cover parts of the road. Start with today's live tide times, or see where to leave a car inland.

What tide height floods Shore Road?

BoshamTide currently uses an approximate threshold of about 4.0m Chart Datum for Shore Road flooding. That figure is a local working estimate for this site, not a published UKHO constant, so treat it as guidance, not a guarantee.

Predicted high water at or above that level is treated as likely to cover the road. High water within about 0.3m of 4.0m is treated as borderline: wind and low pressure can tip it either way. Below that band, the road is generally expected to stay dry.

Real water can differ from the table because of weather, atmospheric pressure, wind set-up and the shape of Bosham Harbour. Always look at the road on arrival. See how BoshamTide calculates Shore Road flooding.

When should I move my car from Shore Road?

Do not use the exact high-tide time as the only moment to move a car. If a tide is high enough to flood, water usually starts covering the road before high water and can still be on the tarmac after the tide has turned.

Where BoshamTide predicts a flooding window, that start and end is shown in the live status above. Leave a safety margin around the predicted flooding window: arrive earlier than the start, and do not assume the road is clear the minute the window ends.

For the current tide the estimated window is about 09:13–14:08. That is a modelled estimate from the predicted height, not a surveyed water-on-road observation.

This is not a safety guarantee. If you are unsure, park further inland and walk down.

Why does Shore Road flood?

Bosham Harbour is tidal. Shore Road runs immediately beside it, and parts of the carriageway sit low enough that a larger high tide comes over the quay edge and across the tarmac — the same stretch visitors use for parking by the water.

That is why a quiet neap can leave the road dry all day, while a spring tide can put cars in the water if they are left too long. The live Bosham tide times dashboard is built around that local problem, not around a generic tide table.

Tide-height guide

BoshamTide does not use a long ladder of flood bands. Parking advice follows one working threshold (4.0m) and a borderline margin of 0.3m:

Typical Shore Road status from predicted high-water height
PREDICTED TIDETYPICAL BOSHAMTIDE STATUS
Below about 3.7mShore Road generally expected to remain dry
About 3.7m to just below 4.0mPossible / marginal flooding: weather can decide it
4.0m and aboveFlooding increasingly likely around high water

Heights are Admiralty predictions for Bosham, not a live gauge on Shore Road. See Bosham tide data and methodology for how the flood window is modelled.

Shore Road flooding FAQ

Does Shore Road in Bosham flood every day?
No. Shore Road floods when a high tide is large enough to reach the harbour edge, typically around 4.0m Chart Datum on this site. On smaller neap tides the road may stay dry all day. On spring tides it can be underwater for hours.
What tide height does Shore Road flood?
BoshamTide uses an approximate working threshold of about 4.0 metres above Chart Datum. That is a local estimate for Shore Road, not a published UK Hydrographic Office constant. Real water can sit above or below the prediction.
Can I park on Shore Road at high tide?
Right now Shore Road parking looks safe to park until about 09:13. High tide itself is not a guarantee of flooding. Only tides that reach about 4.0m Chart Datum typically cover the road. Leave a safety margin around any predicted flood window, and check conditions on arrival.
How accurate are Bosham tide predictions?
High-water times and heights come from UK Hydrographic Office predictions via the Admiralty API. Flood windows are modelled from those predictions and a harbour curve, so they are estimates. Weather, pressure and local harbour conditions can change the outcome. Always judge what you see on the ground.
Does weather affect flooding in Bosham?
Yes. Wind, low pressure and surge can raise water above a predicted height, especially when high water is within about 0.3m of the 4.0m flood level. A borderline tide can stay dry on a calm day and cover the road in a southerly blow.

Tidal predictions are for guidance only. Times and heights are based on published forecasts and modelled data. Actual conditions may vary with weather, pressure, and local factors. Always assess the road on arrival.

The tide has been winning this argument since at least the 11th century.

Data & methodology

© 2026 BoshamTide·Built by Harvey Woods

Updated 04:14