Does Westergate flood?

Flood warnings in force near Westergate

• Flood alert — Climping Seafront
  Flooding is possible for 2 hours either side of Monday evening's tide at 23:15 on 26/10/2026 8.2 km

From the Environment Agency (England). Always check the GOV.UK Check for Flooding service or call Floodline on 0345 988 1188.

What the Environment Agency's rivers-and-sea flood-risk data says about Westergate

Ordnance Survey places 28 postcodes in Westergate in the Environment Agency's rivers-and-sea flood-risk dataset (Risk of Flooding from Rivers and Sea). Each postcode is counted once, under the worst band any of its properties reaches; together they hold 262 properties in the EA dataset's likelihood bands.

This dataset covers flooding from rivers and the sea only — one of five flood sources. Surface water, groundwater, sewers and reservoirs are assessed separately, so a postcode missing from it is not proof that a place cannot flood. The band describes the land around properties (allowing for defences), not any single address and not today's conditions.

Rivers and live river levels near Westergate

Environment Agency gauges within 10 km of Westergate watch Barnham Rife, Aldingbourne Rife, River Lavant, River Arun.

• Barnham
  Barnham Rife · 2.3 km away No recent reading
• Bognor
  Aldingbourne Rife · 4.6 km away -0.06 mAOD
  normal range · falling · 30 min ago
• Graylingwell
  River Lavant · 6.9 km away 0.01 m
  normal range · steady · 30 min ago
• Chichester Tozer Way
  River Lavant · 7.0 km away 12.65 mAOD
  normal range · 45 min ago
• Arundel
  River Arun · 8.3 km away 0.08 mAOD
  normal range · falling · 30 min ago
• Littlehampton Tidal
  River Arun · 9.4 km away -1.27 mAOD
  rises and falls with the tide · 30 min ago

Distances are from the middle of Westergate's at-risk postcodes. Tidal and structure gauges are shown as readings only — the tide and sluice gates move them, not floods. A gauge with no recent reading shows no level.

Flood warning areas near Westergate

23 Environment Agency flood warning areas lie within 10 km of Westergate. The EA has issued 409 flood warnings and alerts for them since 2006, most recently on 26 Oct 2026.

• The Barnham Rife at Barnham, including the B2233, Lake Lane, Orchard Way, and Downview Road
  1 warning or alert since 2006, latest Jun 2012 2.0 km
• Elbridge, Lidsey, Aldingbourne, Barnham, Yapton and Ryebank Rifes
  64 warnings and alerts since 2006, latest Aug 2026 3.7 km
• Coastal areas of Bognor, including Felpham, South Bersted, North Bersted and Shripney
  no warning on record since 2006 3.8 km
• The Aldingbourne Rife at Bersted, including Addison Way, Riverside Caravan Park, and the South Bersted industrial estate
  13 warnings and alerts since 2006, latest Feb 2024 4.0 km
• The River Lavant at Westhampnett, including Church Farm pit, the A27, and the Supermarket retail park at Portfield Way
  2 warnings and alerts since 2006, latest Jan 2023 5.0 km
• The Aldingbourne and Lidsey Rifes at Felpham, including the Whitfield Close, the A259, Links Avenue, and Butlins Holiday Centre
  4 warnings and alerts since 2006, latest Nov 2023 5.5 km
• The River Lavant from Mid Lavant to Shopwhyke including Chichester
  27 warnings and alerts since 2006, latest Feb 2026 5.6 km
• Coastal areas between Selsey Bill and Elmer, including Pagham, Sidlesham and Bognor
  49 warnings and alerts since 2006, latest Oct 2026 5.8 km
• Coastal areas of Elmer
  no warning on record since 2006 6.1 km
• The River Arun at Ford and Climping
  no warning on record since 2006 6.9 km
• The River Lavant within Chichester City Centre, including Whyke, the A285, A286, and Chichester College
  no warning on record since 2006 7.5 km
• River Road, Arundel, near Tarrant Wharf and Arun Street
  no warning on record since 2006 8.0 km

Recorded floods near Westergate

Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Westergate, most recent first. Records, not floods: no outline on the record is not evidence a place has not flooded. See them on the map →

• 5 Mar 2014 — East Hampshire Aerial Photography Winter 13/14 Other
• 5 Mar 2014 — East Hampshire Winter 13/14 event Other
• 30 Dec 1993 — BARNHAM 1993 Main river
• 1 Dec 1993 — River Lavant Flood 1994 Main river
• 1 Nov 1987 — BARNHAM 1987 Drainage
• 1 Nov 1987 — EASTERGATE 1987 Drainage
• 1 Nov 1987 — WALBERTON 1987 Drainage
• 1 Nov 1987 — YAPTON 1987 Drainage
• 9 Dec 1982 — WALBERTON 1982 Drainage
• 23 Nov 1974 — YAPTON 1974 Other
• 23 Nov 1974 — BARNHAM 1974 Drainage
• 23 Nov 1974 — WALBERTON 1974 Drainage

…and 4 earlier recorded floods on the map.

Rainfall near Westergate

Westergate gets about 863 mm of rain a year on average (wettest month November, 104 mm; driest May, 50 mm). That is 26% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.5 km from the place centre.

The nearest rain gauge, Rainfall station (1.6 km away), recorded 4.0 mm in the last 24 hours and 90.7 mm in the last 7 days (latest reading 30 min ago).

At-risk postcodes in Westergate

Every postcode Ordnance Survey places in Westergate that appears in the EA's rivers-and-sea dataset, worst band first. Each links to its own flood-risk page.

Medium likelihood (13)

Low likelihood (14)

Very low likelihood (1)

Postcode districts

Sources

FloodRadar summarises public flood data. It is not a flood-risk survey of any property, and it does not replace official GOV.UK flood warnings or the GOV.UK long-term flood risk service.