Home › Rainfall › Colwell Bay

Rainfall in Colwell Bay

How much rain fell in Colwell Bay, Isle of Wight? Daily, weekly and monthly totals averaged over the Environment Agency rain gauges within 15km, updated every 15 minutes.

Yellow Yellow warning of rain

Heavy rain brings a high likelihood of moderate impacts from surface water flooding.

In force until 11pm Sat 24 Oct (UK time). Issued 9:05am Sat 24 Oct by the Met Office.

What to expect and what to do

What to expect

  • Spray and flooding on roads probably making journey times longer
  • Bus and train services probably affected with journey times taking longer
  • Some interruption to power supplies and other services likely
  • Flooding of a few homes and businesses is possible

What should I do?

Give yourself the best chance of avoiding delays by checking road conditions if driving, or bus and train timetables, amending your travel plans if necessary.

People cope better with power cuts when they have prepared for them in advance. It's easy to do; consider gathering torches and batteries, a mobile phone power pack and other essential items.

Check if your property could be at risk of flooding. If so, consider preparing a flood plan and an emergency flood kit.

Be prepared for weather warnings to change quickly: when a weather warning is issued, the Met Office recommends staying up to date with the weather forecast in your area.

What should I do? See the Met Office warnings and advice. Met Office Weather Warnings © Crown Copyright 2026

The average of 4 rain gauges within 15km of the centre of Colwell Bay's monitored area, all reporting in the last two days. This October they range from 118.0mm to 131.6mm. The nearest is Rainfall gauge nr Freshwater Bay, 3.2km away. Rain can be very local, so one street may differ from the average.
25.1mm
Yesterday (23 Oct 2026)
78.4mm
Last 7 days
125.7mm
October so far
vs 100.4mm avg — 25% wetter
17.6mm
Today so far (UTC)

Rain forecast

A Met Office weather warning is in force here: see the warning above.

Next 24 hours: about 8.2mm of rain forecast for the area around Colwell Bay, heaviest in the hour to 23:00 (3.4mm).

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.

🏠 Thinking of buying in Colwell Bay? Get the Property Flood-Risk Report for any Colwell Bay postcode — official risk band, recorded floods since 1946, warning history, river behaviour and nearby storm overflows. £19 one-off, instant. Learn more →
⚠️ Yesterday's 30.8mm at Rainfall gauge nr Freshwater Bay was the wettest day at this gauge since 8 Sep 2026 and in the top 1.3% of 466 rain days in this gauge's 2-year record.
⚠️ Yesterday's 23.5mm at Rainfall gauge nr Everton was the wettest day at this gauge since 8 Sep 2026 and in the top 2.1% of 471 rain days in this gauge's 2-year record.
⚠️ Yesterday's 18.9mm at Rainfall gauge nr Brighstone was the wettest day at this gauge since 20 Oct 2026 and in the top 4.3% of 517 rain days in this gauge's 2-year record.

Nearest rain gauges to Colwell Bay

GaugeDistanceYesterday7 daysOctoberToday
Rainfall gauge nr Freshwater Bay nr Freshwater Bay 3.2km 30.8mm 80.4mm 126.1mm 18.4mm
Rainfall gauge nr Everton nr Everton 7.9km 23.5mm 79.1mm 118.0mm 15.8mm
Rainfall gauge nr Brighstone nr Brighstone 10.6km 18.9mm 67.2mm 127.1mm 22.0mm

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

Daily totals 24 Sep–23 Oct. Wettest day: 25.1mm.

Rain days this October

14 days with at least 0.2mm of rain so far this October at Rainfall gauge nr Freshwater Bay, against a full-month average of 15.3 rain days (based on 2 months of records at this gauge).

Rainfall year by year: south-east and central southern England

The rain gauges near Colwell Bay do not have a long enough daily record yet, so this is the Met Office series for the wider region.

Yearly rainfall 1986–2025, with the dashed line at the 1991–2020 average. Wettest: 2000 (1,109 mm). Driest: 2005 (610 mm). Source: Met Office HadUK-Grid areal series, Open Government Licence v3.0.

Wettest days and storms in Colwell Bay

Wettest days since 2001

  1. 61.6 mm 24 Oct 2023up to 80.1 mm at one gauge
  2. 55.1 mm 27 May 2007up to 55.8 mm at one gauge
  3. 51.8 mm 18 Nov 2007up to 68.2 mm at one gauge
  4. 42.4 mm 23 Dec 2013 · 2013-14 UK winter floodsup to 50.6 mm at one gauge
  5. 39.8 mm 23 Sep 2012up to 43.4 mm at one gauge

Storms that brought the most rain here

  1. 51.8 mm Storm Angus · 19–21 Nov 2016
  2. 49.9 mm Storm Babet · 18–22 Oct 2023
  3. 42.4 mm Storm Deirdre · 15–16 Dec 2018
  4. 42.3 mm Storm Henk · 2–5 Jan 2024
  5. 36.6 mm Storm Callum · 11–14 Oct 2018

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 Colwell Bay

Colwell Bay gets about 824 mm of rain a year on average (wettest month November, 107 mm; driest July, 45 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), 1.4 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 Colwell Bay

Rain gauge River gauge Storm overflow Discharging now

Rivers near Colwell Bay

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 Colwell Bay's monitored area.

Storm overflows near Colwell Bay

13 storm overflows within 5 km of the centre of Colwell Bay's monitored area. 2 are discharging now, 11 report not discharging.

Discharging now, then 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: © Southern 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.

Frequently asked questions

How much rain fell in Colwell Bay yesterday?

25.1mm of rain fell yesterday (23 Oct 2026), from the average of 4 rain gauges within 15km of Colwell Bay.

Is this month wetter than normal in Colwell Bay?

October so far: 125.7mm vs 100.4mm October average — 25% wetter (the average covers the whole month; we are 24 days in). Figures are the average of 4 rain gauges within 15km.

Where is the nearest rain gauge to Colwell Bay?

Rainfall gauge nr Freshwater Bay is the nearest rain gauge, 3.2km from the centre of Colwell Bay'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 Colwell Bay had this month?

14 days with at least 0.2mm of rain so far this October at Rainfall gauge nr Freshwater Bay, against a full-month average of 15.3 rain days.

What is the wettest day on record in Colwell Bay?

24 Oct 2023: 61.6 mm on average across 4 local rain gauges, and up to 80.1 mm at one of them. Records since 30 Mar 2001.

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 Colwell Bay's monitored area — local rainfall can vary over short distances.