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Rainfall in Cardiff

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

The average of 5 rain gauges within 15km of the centre of Cardiff, all reporting in the last two days. The nearest is St Fagans Raingauge, 6.0km away. Rain can be very local, so one street may differ from the average.

0.0mm

Yesterday (24 Sep 2026)

4.5mm

Last 7 days

–

September so far

0.0mm

Today so far (UTC)

Rain forecast

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

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).

Chance of rain in Cardiff

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

Next 48 hours: 80% chance of more than 1 mm.

Updated 18:07 on Fri 25 Sep. For the Met Office forecast point under 1 km from Cardiff. Powered by Met Office data.

Nearest rain gauges to Cardiff

Gauge	Distance	Yesterday	7 days	September	Today
St Fagans Raingauge	6.0km	0.0mm	2.0mm	–	0.0mm
Rhiwbina Reservoir Raingauge	6.9km	0.0mm	6.0mm	–	0.0mm
Cogmoors Raingauge	7.2km	0.0mm	1.6mm	–	0.0mm

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

Daily totals 26 Aug–24 Sep. Wettest day: 12.8mm. Striped days have no daily total from these gauges (missing data, not a dry day).

Rain days this September

12 days with at least 0.2mm of rain so far this September at St Fagans Raingauge.

Average rainfall in Cardiff

Cardiff gets about 1,182 mm of rain a year on average (wettest month December, 137 mm; driest April, 72 mm). That is close to the UK as a whole, which averages 1,163 mm a year.

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
126	90	83	72	77	76	86	100	82	126	128	137

Monthly averages in mm. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 1.4 km from the centre of Cardiff. 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.

More for Cardiff

St Fagans Raingauge — full gauge history → Rhiwbina Reservoir Raingauge — full gauge history → Cogmoors Raingauge — full gauge history → Notable recent rainfall across the UK → River stations in Cardiff →

Frequently asked questions

How much rain fell in Cardiff yesterday?

0.0mm of rain fell yesterday (24 Sep 2026), from the average of 5 rain gauges within 15km of Cardiff.

Is this month wetter than normal in Cardiff?

The gauges near Cardiff do not have a complete record for September yet, so no month total is shown.

Where is the nearest rain gauge to Cardiff?

St Fagans Raingauge is the nearest rain gauge, 6.0km from the centre of Cardiff. 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 Cardiff — local rainfall can vary over short distances. The centre of Cardiff is the Ordnance Survey Open Names point for the city or town. Contains OS data © Crown copyright and database right 2026 (OGL v3.0).

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