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Home › Rainfall › Nantgwyn

Rainfall in Nantgwyn

How much rain fell in Nantgwyn, Powys? Daily, weekly and monthly totals averaged over the Natural Resources Wales rain gauges within 15km, updated every 15 minutes.

The average of 7 rain gauges within 15km of the centre of Nantgwyn's monitored area, all reporting in the last two days. This October they range from 120.2mm to 189.2mm. The nearest is Nantgwyn Raingauge, 0.1km away. Rain can be very local, so one street may differ from the average.
8.1mm
Yesterday (26 Oct 2026)
90.9mm
Last 7 days
147.4mm
October so far
7.1mm
Today so far (UTC)

Rain forecast

Next 24 hours: about 2.8mm of rain forecast for the area around Nantgwyn, heaviest in the hour to Wed 08:00 (1.1mm).

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 6.6mm at Nantgwyn Raingauge was the wettest day at this gauge since 24 Oct 2026 and in the top 23.8% of 42 rain days in this gauge's very short record (short record — treat with caution).
⚠️ Yesterday's 8.2mm at Bwlch Y Sarnau Raingauge was the wettest day at this gauge since 24 Oct 2026 and in the top 12.5% of 40 rain days in this gauge's very short record (short record — treat with caution).
⚠️ Yesterday's 9.4mm at Llangurig Raingauge was the wettest day at this gauge since 24 Oct 2026 and in the top 22.2% of 45 rain days in this gauge's very short record (short record — treat with caution).

Nearest rain gauges to Nantgwyn

GaugeDistanceYesterday7 daysOctoberToday
Nantgwyn Raingauge 0.1km 6.6mm 83.6mm 129.8mm 4.2mm
Bwlch Y Sarnau Raingauge 5.6km 8.2mm 77.0mm 120.2mm 5.6mm
Llangurig Raingauge 7.6km 9.4mm 119.0mm 189.2mm 8.6mm

Last 30 days (average of 7 gauges within 15km)

Daily totals 27 Sep–26 Oct. Wettest day: 32.6mm.

Rain days this October

23 days with at least 0.2mm of rain so far this October at Nantgwyn Raingauge.

Rainfall year by year: south-west England and south Wales

The rain gauges near Nantgwyn 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 (1,619 mm). Driest: 2003 (959 mm). Source: Met Office HadUK-Grid areal series, Open Government Licence v3.0.

Average rainfall in Nantgwyn

Nantgwyn gets about 1,356 mm of rain a year on average (wettest month December, 171 mm; driest May, 77 mm). That is wetter 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), 0.7 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 Nantgwyn

Rain gauge River gauge

Rivers near Nantgwyn

Nearest river gauges

Rhos-Y-Pentref River Station Dulas · 6.3 km 0.78 m Steady Llanidloes River Station Severn · 8.3 km 1.27 m Steady Dolwen River Station Severn · 8.3 km 0.93 m Steady Ddol Farm River Station Wye · 9.3 km 1.01 m Falling slightly ▼ Bryntail River Station Clywedog · 11.8 km 0.15 m Steady Clywedog Reservoir Clywedog · 12.1 km -8.62 m Steady

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

More for Nantgwyn

Nantgwyn Raingauge — full gauge history → Bwlch Y Sarnau Raingauge — full gauge history → Llangurig Raingauge — full gauge history → Notable recent rainfall across the UK → River stations in Powys →

Frequently asked questions

How much rain fell in Nantgwyn yesterday?

8.1mm of rain fell yesterday (26 Oct 2026), from the average of 7 rain gauges within 15km of Nantgwyn.

Is this month wetter than normal in Nantgwyn?

October so far: 147.4mm, from the average of 7 rain gauges within 15km of Nantgwyn. There is not yet enough history to compute a reliable October average.

Where is the nearest rain gauge to Nantgwyn?

Nantgwyn Raingauge is the nearest rain gauge, 0.1km from the centre of Nantgwyn's monitored area. Rain gauges can be several kilometres from the town itself, so very local downpours may not register exactly.

Rainfall data: Natural Resources Wales 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 Nantgwyn's monitored area — local rainfall can vary over short distances.