Yes, in the low ground along the Wey, and not much beyond it. Around one postcode in ten carries a high risk on at least one flood measure. A smaller slice sits in the river's highest-risk zone. The town has flooded repeatedly within living memory and has built defences in response. The risk is real, concentrated and checkable, which makes it a question of which street, not which town.
On the Environment Agency's river-and-sea flood zones, about 2% of the area's postcodes sit in Zone 3, the highest-probability band, and about 11% sit in Zone 2, the medium-probability fringe beyond it. The two are separate bands, not one inside the other, and the larger Zone 2 share reflects the shape of the Wey valley: a wide shelf of land at moderate risk around a narrow core at high risk. The Lammas Lands water meadows between the town and the river exist for exactly this reason.
There is no separate surface-water share for Godalming in this brief. Surface water is folded into the postcode indicators further down, so the zone figures above describe rivers and the sea only. The history sits alongside both. About 13% of the area's postcodes fall inside recorded historic flood outlines, and the Environment Agency holds 120 recorded flood events for the area, the latest in that record logged in January 2003 from the main river, where channel capacity was exceeded with no raised defences in place. Serious floods hit the town in 1968, 1990, 2000, 2013 and 2020, and a flood wall and pumping stations were installed in the winter of 2018 to 2019.
Looking forward, the Environment Agency's climate-adjusted flood zone covers about 14% of the area's postcodes. That is the zone the modelling expects once future rainfall and river flows are allowed for, and it is the figure a buyer holding a mortgage for decades should weigh.
For insurance, a home in or near the river zones can mean higher premiums, a larger excess or more questions at quote stage. Get an indicative quote on the exact address before committing to a purchase, not after exchange.
At postcode level, and counting surface water alongside rivers and the sea, about 10% of postcodes rate high on at least one flood measure, about 13% medium and about 27% low. These bands overlap with the zone figures above and should not be added to them. They describe the broader picture of any flooding source reaching a postcode, which is why they run higher.
Counted as homes and buildings rather than postcodes, the Environment Agency's rivers-and-sea mapping lists 25 postcodes carrying some risk, covering 415 properties. Of those, 37 are at high risk, 81 at medium risk and 70 at low risk, and 10 of the high-risk properties are residential. Postcodes carrying no river-or-sea risk do not appear in this count at all, so the figure describes the exposed pockets, not the whole town.
On defences, about 2% of postcodes fall inside the modelled high-risk extent without defences, and the same 2% with defences present in the model. A defence showing in the model does not mean the property behind it is safe. In the high-risk core, the modelled extent does not shrink when defences are counted, which is worth knowing before anyone mentions the flood wall as a selling point. The wider low-probability extent, undefended, covers about 4% of postcodes.
The nearest tide gauge, at Portsmouth, recorded sea level rising at about 2 millimetres a year across its record from 1962 to 2023. That is a measured historic rate at the coast, not a forecast, and for an inland river town it matters far less than rainfall on the Wey catchment.
Godalming's flood risk is middling: most of the town sits well clear, and the valley floor does not. Check the exact address against the Environment Agency's mapping, and treat any home near the river as a property with a flood history until the paperwork proves otherwise.