Does SO45 flood?

Yes — parts of the SO45 district carry real flood risk: 36 of its 80 at-risk postcodes reach the Environment Agency's High likelihood band. The SO45 postcode district covers Hythe Central, Fawley, Blackfield, Calshot & Langley, Hythe South, Hardley, Holbury & North Blackfield, close to Woolston, Beaulieu, Hamble, and surrounding villages in parts of Hampshire and England.

80 postcodes in the SO45 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 36 high, 9 medium, 24 low, 11 very low. A postcode not listed here has no properties in any recorded risk band (which is good news, but never proof it cannot flood).

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Which SO45 postcodes are at risk?

SO45 1AD up to High SO45 1BR up to High SO45 1DT up to High SO45 1TW up to High SO45 2HD up to High SO45 2HG up to High SO45 3LD up to High SO45 3NP up to High SO45 4NB up to High SO45 4NP up to High SO45 4NZ up to High SO45 5DL up to High SO45 5DN up to High SO45 5DS up to High SO45 5FD up to High SO45 5FE up to High SO45 5FQ up to High SO45 5FR up to High SO45 5FU up to High SO45 5FZ up to High SO45 5GD up to High SO45 5GP up to High SO45 5XA up to High SO45 6AT up to High SO45 6AU up to High SO45 6BA up to High SO45 6BQ up to High SO45 6DB up to High SO45 6DD up to High SO45 6DF up to High SO45 6DS up to High SO45 6DW up to High SO45 6DY up to High SO45 6GJ up to High SO45 6HE up to High SO45 6JZ up to High SO45 5TB up to Medium SO45 6AH up to Medium SO45 6AJ up to Medium SO45 6AN up to Medium SO45 6AR up to Medium SO45 6FD up to Medium SO45 6YU up to Medium SO45 6ZB up to Medium SO45 6ZN up to Medium SO45 1AE up to Low SO45 1BB up to Low SO45 2HE up to Low SO45 3LS up to Low SO45 4HU up to Low SO45 4NL up to Low SO45 5FB up to Low SO45 5GA up to Low SO45 6AG up to Low SO45 6AL up to Low SO45 6AP up to Low SO45 6AQ up to Low SO45 6BB up to Low SO45 6BP up to Low SO45 6BZ up to Low SO45 6DA up to Low SO45 6EA up to Low SO45 6HD up to Low SO45 6JU up to Low SO45 6JW up to Low SO45 6JY up to Low SO45 6RU up to Low SO45 6YW up to Low SO45 6ZL up to Low SO45 1BH up to Very low SO45 6AE up to Very low SO45 6BJ up to Very low SO45 6DT up to Very low SO45 6DX up to Very low SO45 6DZ up to Very low SO45 6HA up to Very low SO45 6HB up to Very low SO45 6JD up to Very low SO45 6JR up to Very low SO45 6LA up to Very low

Rivers and flooding history near SO45

The rivers that matter here, each monitored live on FloodRadar:

379 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (91 at warning level or above), most recently 30 August 2026. Warnings cover flood areas, not individual addresses.

Recorded flood extents near the district (Environment Agency record):

Records, not floods: no outline on the record is not evidence a place has not flooded.

🏠 Buying or renting in SO45? The full property flood-risk report covers any postcode here — the official likelihood band, every recorded flood nearby with distances, warning history year by year, how the local rivers behave, and an insurance outlook, print-ready for £19. See what's in the report →

Flood risk in nearby postcode districts

SO43 SO42 SO41 SO40 SO50 SO51 SO52 SO53

Band = the worst likelihood band of any property in that postcode (EA Risk of Flooding from Rivers & Sea, defence-adjusted, area-level). Check any postcode in detail — or get the full £19 property report — at the property flood-risk report. © Environment Agency copyright and/or database right 2025. All rights reserved. Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH). © Crown Copyright and Database Rights 2025 OS AC0000807064. This product is produced in part from PAF® and Multiple Residence Data, the copyright in which is owned by Royal Mail Group Limited and/or Royal Mail Group plc. All rights reserved. Licence number AC0000807064.