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Rainfall in Alton

How much rain fell in Alton, Hampshire? Daily, weekly and monthly totals averaged over the Environment Agency rain gauges within 15km, updated every 15 minutes.

The average of 4 rain gauges within 15km of the centre of Alton's monitored area, all reporting in the last two days. This October they range from 109.2mm to 124.9mm. The nearest is Rainfall gauge nr Alton, 0.0km away. Rain can be very local, so one street may differ from the average.
6.3mm
Yesterday (26 Oct 2026)
88.7mm
Last 7 days
116.2mm
October so far
vs 106.7mm avg — 9% wetter
5.8mm
Today so far (UTC)

Rain forecast

Next 24 hours: little or no rain forecast for the area around Alton (under 0.2mm).

A computer model forecast (DWD ICON) for a square about 15 km across, updated 11:05 UK time. It is a forecast, not a measurement, and not a Met Office forecast. Weather data by Open-Meteo (CC BY 4.0).

Next 4 days

Daily totals for UK days from the same computer model; "dry" means under 0.2mm. Forecasts further ahead are less certain.

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⚠️ Yesterday's 5.3mm at Rainfall gauge nr Alton was the wettest day at this gauge since 24 Oct 2026 and in the top 25.3% of 517 rain days in this gauge's 2-year record.
⚠️ Yesterday's 6.3mm at Rainfall gauge nr Lindford was the wettest day at this gauge since 24 Oct 2026 and in the top 19.3% of 535 rain days in this gauge's 2-year record.
⚠️ Yesterday's 7.0mm at Rainfall gauge nr Liss was the wettest day at this gauge since 24 Oct 2026 and in the top 22.1% of 498 rain days in this gauge's 2-year record.

Nearest rain gauges to Alton

GaugeDistanceYesterday7 daysOctoberToday
Rainfall gauge nr Alton 0.0km 5.3mm 86.0mm 109.2mm 5.7mm
Rainfall gauge nr Lindford nr Lindford 7.8km 6.3mm 91.8mm 118.0mm 5.1mm
Rainfall gauge nr Liss nr Liss 12.1km 7.0mm 95.6mm 124.9mm 6.0mm

Last 30 days (average of 4 gauges within 15km)

Daily totals 27 Sep–26 Oct. Wettest day: 21.4mm.

Rain days this October

17 days with at least 0.2mm of rain so far this October at Rainfall gauge nr Alton, against a full-month average of 16.7 rain days (based on 2 months of records at this gauge).

Rainfall year by year in Alton

2026 so far: 681 mm (1 Jan to 26 Oct), against 676 mm by the same date in an average year (2002–2025) — about average.

One bar per calendar year, the average of 4 local rain gauges: the Environment Agency's quality-checked daily archive, then live telemetry for the latest months. Wettest: 2023 (1,164 mm). Driest: 2005 (695 mm). Average: 912 mm a year. Striped years have gaps in the record, so no total is shown for them.

Wettest days and storms in Alton

Wettest days since 2000

  1. 79.7 mm 4 Jul 2000up to 90.2 mm at one gauge
  2. 64.0 mm 23 Dec 2013 · 2013-14 UK winter floodsup to 79.2 mm at one gauge
  3. 63.2 mm 2 Oct 2020up to 83.3 mm at one gauge
  4. 49.0 mm 29 Oct 2000up to 51.0 mm at one gauge
  5. 45.5 mm 1 Dec 2005up to 50.4 mm at one gauge

Storms that brought the most rain here

  1. 54.4 mm Storm Angus · 19–21 Nov 2016
  2. 51.7 mm Storm Babet · 18–22 Oct 2023
  3. 50.4 mm Storm Dennis · 15–16 Feb 2020
  4. 48.0 mm Storm Henk · 2–5 Jan 2024
  5. 47.5 mm Storm Bert · 22–25 Nov 2024

Daily totals are the average of 4 local rain gauges, for UTC days; one gauge can catch much more than the average. A storm's figure adds up the rain measured on its dates, from our list of Met Office named storms and major floods — other weather on those days counts too.

Average rainfall in Alton

Alton gets about 925 mm of rain a year on average (wettest month November, 109 mm; driest May, 55 mm). That is drier than the UK as a whole, which averages 1,163 mm a year.

Monthly averages in mm. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 1.0 km from the town's gauge centre. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0. UK comparison: Met Office HadUK-Grid areal series, 1991-2020, Open Government Licence v3.0.

Gauges and storm overflows around Alton

Rain gauge River gauge Storm overflow

Rivers near Alton

River Wey the largest river near Alton

Nearest gauge on it: Kings Pond, 1.3 km away: 0.07 m Steady.

Every gauge on the River Wey →

Nearest river gauges

A level is shown only when the gauge's latest reading is under 6 hours old. Distances are straight-line from the centre of Alton's monitored area.

Storm overflows near Alton

4 storm overflows within 5 km of the centre of Alton's monitored area. None of the 4 with a live status is discharging right now.

The most spills in 2025

Sewage & storm overflows →

Event Duration Monitors show when an overflow may be spilling; they do not confirm it, and this is not advice on water quality. A live status older than two hours counts as no current status. Live status: © Thames Water storm overflow activity data, licensed under CC BY 4.0. Annual spill figures: Environment Agency Event Duration Monitoring return, © Environment Agency copyright and/or database right, Open Government Licence (OGL) v3.0.

About Alton

Alton, Hampshire
Photo: Wikimedia Commons (author and licence on the file page)

Market town in Hampshire, England

Alton is a market town and civil parish in East Hampshire, England, near the source of the northern branch of the River Wey. It is on the A31 road 8.5 miles (13.7 km) southeast of Farnham and 16 miles (26 km) northwest of Winchester.

From Wikipedia, the free encyclopedia (CC BY-SA 4.0).

Frequently asked questions

How much rain fell in Alton yesterday?

6.3mm of rain fell yesterday (26 Oct 2026), from the average of 4 rain gauges within 15km of Alton.

Is this month wetter than normal in Alton?

October so far: 116.2mm vs 106.7mm October average — 9% wetter (the average covers the whole month; we are 27 days in). Figures are the average of 4 rain gauges within 15km.

Where is the nearest rain gauge to Alton?

Rainfall gauge nr Alton is the nearest rain gauge, 0.0km from the centre of Alton's monitored area. Rain gauges can be several kilometres from the town itself, so very local downpours may not register exactly.

How many rain days has Alton had this month?

17 days with at least 0.2mm of rain so far this October at Rainfall gauge nr Alton, against a full-month average of 16.7 rain days.

What was the wettest year in Alton?

2023 was the wettest year in the record since 2002, with 1,164 mm from the average of 4 local rain gauges, against an average of 912 mm a year. The driest was 2005, with 695 mm.

What is the wettest day on record in Alton?

4 Jul 2000: 79.7 mm on average across 4 local rain gauges, and up to 90.2 mm at one of them. Records since 1 Jan 2000.

Rainfall data: Environment Agency rain gauges, synced every 15 minutes. Daily totals are computed overnight (UTC days); "today so far" is live. Gauge distances are straight-line from the centre of Alton's monitored area — local rainfall can vary over short distances.