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Rainfall in Flaunden

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

The average of 5 rain gauges within 15km of the centre of Flaunden's monitored area, all reporting in the last two days. This October they range from 0.0mm to 99.5mm. The nearest is Rainfall gauge nr Flaunden, 0.0km away. Rain can be very local, so one street may differ from the average.
0.0mm
Yesterday (25 Oct 2026)
40.0mm
Last 7 days
59.1mm
October so far
vs 78.2mm avg — 24% drier
3.2mm
Today so far (UTC)

Rain forecast

Next 24 hours: about 3.6mm of rain forecast for the area around Flaunden, heaviest in the hour to Tue 06:00 (2.5mm).

A computer model forecast (DWD ICON) for a square about 15 km across, updated 17:05 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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Nearest rain gauges to Flaunden

GaugeDistanceYesterday7 daysOctoberToday
Rainfall gauge nr Flaunden 0.0km 0.2mm 1.6mm 15.8mm 2.0mm
Rainfall gauge nr Bushey nr Bushey 11.5km 0.0mm 66.6mm 86.2mm 4.0mm
Rainfall gauge nr Aldenham nr Aldenham 13.0km 0.0mm 62.9mm 99.5mm 4.1mm

Last 30 days (average of 5 gauges within 15km)

Daily totals 26 Sep–25 Oct. Wettest day: 12.2mm.

Rain days this October

14 days with at least 0.2mm of rain so far this October at Rainfall gauge nr Flaunden, against a full-month average of 18.5 rain days (based on 2 months of records at this gauge).

Rainfall year by year in Flaunden

2026 so far: 447 mm (1 Jan to 25 Oct), against 557 mm by the same date in an average year (2003–2025) — 20% drier.

One bar per calendar year, the average of 5 local rain gauges: the Environment Agency's quality-checked daily archive, then live telemetry for the latest months. Wettest: 2023 (1,488 mm). Driest: 2003 (512 mm). Average: 738 mm a year.

Wettest days and storms in Flaunden

Wettest days since 2000

  1. 55.5 mm 22 Sep 2024up to 83.4 mm at one gauge
  2. 51.0 mm 2 Oct 2020up to 57.7 mm at one gauge
  3. 47.0 mm 15 Sep 2016up to 67.9 mm at one gauge
  4. 44.6 mm 20 Oct 2023 · Storm Babetup to 177.6 mm at one gauge
  5. 41.1 mm 3 Oct 2020up to 53.0 mm at one gauge

Storms that brought the most rain here

  1. 118.2 mm Storm Babet · 18–22 Oct 2023
  2. 47.5 mm Storm Callum · 11–14 Oct 2018
  3. 39.0 mm Storm Angus · 19–21 Nov 2016
  4. 38.2 mm Storm Ciaran · 1–2 Nov 2023
  5. 35.1 mm Storm Bert · 22–25 Nov 2024

Daily totals are the average of 5 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 Flaunden

Flaunden gets about 773 mm of rain a year on average (wettest month November, 86 mm; driest March, 47 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), 2.6 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 Flaunden

Rain gauge River gauge Storm overflow

Rivers near Flaunden

River Colne the largest river near Flaunden

Nearest gauge on it: Moor Lane, 8.5 km away: no recent reading.

Every gauge on the River Colne →

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 Flaunden's monitored area.

Storm overflows near Flaunden

1 storm overflow within 5 km of the centre of Flaunden's monitored area. None of them has a live status we can show 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 Flaunden

Flaunden
Photo: Wikimedia Commons (author and licence on the file page)

Village in Hertfordshire, England

Flaunden is a village and civil parish in Hertfordshire, England, close to the border with Buckinghamshire, on the edge of the Chiltern Hills. Old Flaunden was on the banks of the River Chess, but owing to constant flooding, the settlement moved up the hill to its present location in the 18th and early 19th century.

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

Frequently asked questions

How much rain fell in Flaunden yesterday?

0.0mm of rain fell yesterday (25 Oct 2026), from the average of 5 rain gauges within 15km of Flaunden.

Is this month wetter than normal in Flaunden?

October so far: 59.1mm vs 78.2mm October average — 24% drier (the average covers the whole month; we are 26 days in). Figures are the average of 5 rain gauges within 15km.

Where is the nearest rain gauge to Flaunden?

Rainfall gauge nr Flaunden is the nearest rain gauge, 0.0km from the centre of Flaunden'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 Flaunden had this month?

14 days with at least 0.2mm of rain so far this October at Rainfall gauge nr Flaunden, against a full-month average of 18.5 rain days.

What was the wettest year in Flaunden?

2023 was the wettest year in the record since 2003, with 1,488 mm from the average of 5 local rain gauges, against an average of 738 mm a year. The driest was 2003, with 512 mm.

What is the wettest day on record in Flaunden?

22 Sep 2024: 55.5 mm on average across 5 local rain gauges, and up to 83.4 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 Flaunden's monitored area — local rainfall can vary over short distances.