DisasterAWARE
9
Extreme

flood Flood Risk in London, United Kingdom

Risk Level: Extreme — Score 9/10

Risk: 9Historical: 10

Live Flood alert status near London

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Live flood map around London

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Key Risk Factors

  • High risk rating for London based on ThinkHazard (Coastal flood)
  • 44 events recorded in proximity in recent decades
  • 4 event(s) in the last 12 months
  • Largest recent event exposed 15,200,000 people
  • Significant river or coastal flood exposure

Peak season: March-September

Last significant event: Flood - London, England, United Kingdom (2026-01-04) — 15,200,000 people exposed

Highest Risk Cities for Floods

1
New York, NY
FEMA: 9Historical: 10
2
Los Angeles, CA
FEMA: 9Historical: 10
3
Chicago, IL
FEMA: 9Historical: 10
4
Houston, TX
FEMA: 9Historical: 10
5
Phoenix, AZ
FEMA: 9Historical: 10
6
Philadelphia, PA
FEMA: 9Historical: 10
7
San Antonio, TX
FEMA: 9Historical: 10
8
San Diego, CA
FEMA: 9Historical: 10
9
Dallas, TX
FEMA: 9Historical: 10
10
San Jose, CA
FEMA: 9Historical: 10
London is not in the top 10 for flood risk among tracked cities.

How London Compares

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Notable Flood Events Near London

DisasterAWARE's historical archive records 5 notable flood events near London, ranked below by impact. The most impactful: Flood - London, England, United Kingdom (January 2026) — 15,200,000 people exposed; $3,014,398M capital exposed.

Flood - London, England, United Kingdom

January 3, 2026 — WATCH

15,200,000 people exposed; $3,014,398M capital exposed

Floods - England, United Kingdom

July 25, 2021 — WARNING

Impact data not available

Floods - South-central England, United Kingdom

December 28, 2020 — WARNING

Impact data not available

Floods - Southeast England, United Kingdom

July 19, 2018 — WARNING

Impact data not available

Floods - Anglian Region, United Kingdom

November 23, 2014 — WARNING

Impact data not available

Flood Preparedness Tips

  • 1.Know if your property is in a flood zone — check FEMA maps
  • 2.Consider flood insurance even if not in a high-risk zone
  • 3.Never drive through flooded roadways — Turn Around, Don’t Drown
  • 4.Move valuables and important documents to upper floors
  • 5.Install sump pumps and check valves in plumbing

Related Pages

earthquake
Earthquake Risk in London
Score: 1/10
wildfire
Wildfire Risk in London
Score: 9/10
hurricane
Hurricane Risk in London
Score: 0/10
tornado
Tornado Risk in London
Score: 0/10
winter-storm
Winter Storm Risk in London
Score: 0/10
landslide
Landslide Risk in London
Score: 0/10
extreme-heat
Extreme Heat Risk in London
Score: 3/10
drought
Drought Risk in London
Score: 3/10
high-wind
High Wind Risk in London
Score: 0/10
tsunami
Tsunami Risk in London
Score: 0/10
flood
Flood Risk in Amsterdam, Netherlands
Score: 0/10
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Flood Risk in Zurich, Switzerland
Score: 1/10
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Flood Risk in Munich, Germany
Score: 0/10

How this data is built

London, United Kingdom flood risk combines Historical Event Intelligence with authoritative hazard modeling from the Geospatial Intelligence Layers catalog. Live flood monitoring is available through the Event Intelligence API and the DisasterAWARE Platform.

The data behind this page

Every score and event here comes from DisasterAWARE's hazard database — available as downloadable historical datasets and a real-time API.

Historical flood event data for London, United Kingdom — free dataset samples →Real-time flood alerts by API →

Monitor Flood Risk in Real Time

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