Does Sittingbourne flood?

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

Ordnance Survey places 116 postcodes in Sittingbourne 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 1,975 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.

Flood warning areas near Sittingbourne

5 Environment Agency flood warning areas lie within 10 km of Sittingbourne. The EA has issued 185 flood warnings and alerts for them since 2006, most recently on 26 Oct 2026.

• Areas at risk of coastal flooding on the Isle of Sheppey and North Kent Coast from Kemsley to Seasalter, including Sheerness, Minster, Queenborough, Leysdown on Sea, Sittingbourne and Faversham
  121 warnings and alerts since 2006, latest Oct 2026 7.2 km
• Areas at risk of coastal flooding in Sheerness, Minster and Queenborough, including Rushenden, Scrapsgate and West Minster
  no warning on record since 2006 8.1 km
• Areas at risk of coastal flooding from Kemsley to Seasalter, including Sittingbourne, Conyer and Faversham
  2 warnings and alerts since 2006, latest Feb 2022 8.4 km
• Scrapsgate Drain from the B2008 to the sea, through Minster and Scrapsgate and the Warden Bay Drain from Bay View to the sea, including Warden and surrounding holiday villages
  55 warnings and alerts since 2006, latest Jun 2025 9.2 km
• Scrapsgate Drain and Warden Bay Drain on the Isle of Sheppey
  7 warnings and alerts since 2006, latest Jan 2021 9.2 km

Recorded floods near Sittingbourne

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

• 11 Oct 2000 — 07302B910_OCT2000_Iwade Main river
• 11 Jan 1978 — 07308B100_JAN1978_Stour Tidal_Sittingbourne to Con Sea
• 11 Jan 1978 — 07308B100_JAN1978_Stour Tidal_Chetney Marshes Sea
• 11 Jan 1978 — 07308B100_JAN1978_Stour Tidal_Elmley Island_Isle O Sea
• 11 Jan 1978 — 07307C100_JAN1978_MedwayTidalEstuary_Lower Halstow Sea
• 1 Feb 1953 — 07307B100_FEB1953_The Swale_Sittingbourne Sea
• 1 Feb 1953 — 07308B100_FEB1953_Iwade CP Sea
• 1 Feb 1953 — 07308B100_FEB1953_The Swale_Sittingbourne Sea
• 1 Feb 1953 — 07307C100_FEB1953_Medway Estuary_Isle of Sheppey Sea
• 1 Feb 1953 — 07301B100_FEB1953_Chetney Marshes Sea
• 1 Feb 1953 — 07301C100_FEB1953_Medway Estuary_Isle of Sheppey Sea

Rainfall near Sittingbourne

Sittingbourne gets about 549 mm of rain a year on average (wettest month October, 62 mm; driest March, 32 mm). That is 53% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.9 km from the place centre.

The nearest rain gauge, Rainfall station (0.2 km away), recorded 1.0 mm in the last 24 hours and 38.6 mm in the last 7 days (latest reading 27 min ago).

At-risk postcodes in Sittingbourne

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

High likelihood (24)

Medium likelihood (5)

Low likelihood (40)

Very low likelihood (47)

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.