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Rainfall in Harleston

How much rain fell in Harleston, Norfolk? 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 Harleston's monitored area, all reporting in the last two days. This October they range from 67.2mm to 79.9mm. The nearest is Rainfall gauge nr Harleston, 0.0km away. Rain can be very local, so one street may differ from the average.
0.1mm
Yesterday (25 Oct 2026)
40.0mm
Last 7 days
75.9mm
October so far
vs 64.0mm avg — 19% wetter
3.0mm
Today so far (UTC)

Rain forecast

Next 24 hours: about 1.0mm of rain forecast for the area around Harleston, heaviest in the hour to Tue 08:00 (0.7mm).

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.

Chance of rain in Harleston

Met Office forecast for the next 24 hours: 90% chance of more than 1 mm, 15% chance of more than 4 mm and less than 5% chance of more than 12 mm.

Next 48 hours: 90% chance of more than 1 mm.

Updated 16:40 on Mon 26 Oct. For the Met Office forecast point under 1 km from Harleston. Powered by Met Office data.

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Nearest rain gauges to Harleston

GaugeDistanceYesterday7 daysOctoberToday
Rainfall gauge nr Harleston 0.0km 0.0mm 42.8mm 79.1mm 3.3mm
Rainfall gauge nr Mid Suffolk nr Mid Suffolk 9.6km 0.0mm 40.8mm 77.5mm 2.8mm
Rainfall gauge nr Chediston nr Chediston 10.4km 0.2mm 36.0mm 67.2mm 2.6mm

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

Daily totals 26 Sep–25 Oct. Wettest day: 16.2mm.

Rain days this October

14 days with at least 0.2mm of rain so far this October at Rainfall gauge nr Harleston, against a full-month average of 17.2 rain days (based on 2 months of records at this gauge).

Rainfall year by year in Harleston

2026 so far: 392 mm (1 Jan to 25 Oct), against 475 mm by the same date in an average year (2001–2025) — 17% drier.

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: 2012 (789 mm). Driest: 2001 (426 mm). Average: 596 mm a year. Striped years have gaps in the record, so no total is shown for them.

Wettest days and storms in Harleston

Wettest days since 2000

  1. 54.7 mm 27 May 2007up to 67.0 mm at one gauge
  2. 45.7 mm 24 Jul 2015up to 56.8 mm at one gauge
  3. 38.2 mm 6 Oct 2019up to 53.8 mm at one gauge
  4. 34.0 mm 4 Jul 2023up to 37.4 mm at one gauge
  5. 33.3 mm 25 Sep 2020up to 36.6 mm at one gauge

Storms that brought the most rain here

  1. 79.6 mm Storm Babet · 18–22 Oct 2023
  2. 32.5 mm Storm Angus · 19–21 Nov 2016
  3. 32.3 mm Storm Henk · 2–5 Jan 2024
  4. 22.9 mm Storm Ciaran · 1–2 Nov 2023
  5. 16.2 mm Storm Boelo · 24–25 Oct 2026

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 Harleston

Harleston gets about 636 mm of rain a year on average (wettest month August, 64 mm; driest April, 37 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), 2.8 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 Harleston

Rain gauge River gauge Storm overflow

Rivers near Harleston

River Waveney the largest river near Harleston

Nearest gauge on it: Needham, 3.7 km away: 0.29 m Steady.

Every gauge on the River Waveney →

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 Harleston's monitored area.

Storm overflows near Harleston

3 storm overflows within 5 km of the centre of Harleston's monitored area. The 1 with a live status is not discharging right now, and 2 have no current status.

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: © Anglian 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 Harleston

Harleston, Norfolk
Photo: Wikimedia Commons (author and licence on the file page)

Town in Norfolk, England

Harleston is a town in the civil parish of Redenhall with Harleston, in the South Norfolk district, in the county of Norfolk, England. It is 16 miles (26 km) from Norwich. In 2018, it had an estimated population of 5,067, and is known for being the birthplace of Literary modernism. Harleston is on the Norfolk/Suffolk border, close to the River Waveney. Harleston has two markets every Wednesday.

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

Frequently asked questions

How much rain fell in Harleston yesterday?

0.1mm of rain fell yesterday (25 Oct 2026), from the average of 4 rain gauges within 15km of Harleston.

Is this month wetter than normal in Harleston?

October so far: 75.9mm vs 64.0mm October average — 19% wetter (the average covers the whole month; we are 26 days in). Figures are the average of 4 rain gauges within 15km.

Where is the nearest rain gauge to Harleston?

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

14 days with at least 0.2mm of rain so far this October at Rainfall gauge nr Harleston, against a full-month average of 17.2 rain days.

What was the wettest year in Harleston?

2012 was the wettest year in the record since 2001, with 789 mm from the average of 4 local rain gauges, against an average of 596 mm a year. The driest was 2001, with 426 mm.

What is the wettest day on record in Harleston?

27 May 2007: 54.7 mm on average across 4 local rain gauges, and up to 67.0 mm at one of them. Records since 16 Jul 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 Harleston's monitored area — local rainfall can vary over short distances.