Pontneddfechan is among the wettest of UK towns: 1,788 mm (70 in) of rain a year
Expect July afternoons of about 20.2°C (68°F). In July, afternoons here are cooler than in 72% of UK towns. Only 18°C separates winter nights from summer afternoons. Garden chairs stay out from June to September, the months with highs of 17–20°C.
Met Office 1991–2020 averages for the town itself.
A year in Pontneddfechan at a glance
Each month’s typical high and low, in °C.
What a year in Pontneddfechan feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 1,788 mm of rain a year
December is the wettest month and April the driest. About 61 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
44 air frosts and 6 days of 25°C a year
On about 44 nights a year the air drops below freezing, and on about 1 days it stays below freezing all day. About 6 days a year reach 25°C (77°F).
Day counts are 1991–2020 averages from the Met Office’s 2 km grid. The Met Office calls a day of 25°C or more a summer day and a night below 0°C an air frost; ground frosts, on grass, come more often.
The Met Office station at Cardiff Bute Park
Cardiff Bute Park is 25 miles south-east of Pontneddfechan, 9 m (30 ft) above sea level. It is the nearest of the 37 long-running stations the Met Office publishes in full; at that distance read it for sunshine and the station’s own record, not as the town’s figures.
| Month | High | Low | Rain | Air frosts |
|---|---|---|---|---|
| January | 8.6°C | 2.5°C | 127 mm | 8.1 |
| February | 9.1°C | 2.5°C | 93 mm | 7.5 |
| March | 11.3°C | 3.9°C | 85 mm | 3.9 |
| April | 14.4°C | 5.7°C | 72 mm | 1.4 |
| May | 17.4°C | 8.5°C | 78 mm | 0.0 |
| June | 20.1°C | 11.3°C | 73 mm | 0.0 |
| July | 21.8°C | 13.1°C | 84 mm | 0.0 |
| August | 21.4°C | 12.9°C | 105 mm | 0.0 |
| September | 19.1°C | 10.7°C | 87 mm | 0.0 |
| October | 15.2°C | 8.0°C | 128 mm | 1.0 |
| November | 11.6°C | 4.9°C | 131 mm | 3.7 |
| December | 9.1°C | 2.9°C | 140 mm | 8.3 |
| Year | 14.9°C | 7.2°C | 1,201 mm | 34 |
Met Office historic station data, Cardiff Bute Park, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.
How Pontneddfechan compares
Against the 2,537 towns and cities of 2,500 or more across the UK, each with its own Met Office averages, and its place among Powys towns that size.
Nearby towns’ climate
The nearest towns of 1,000+ within 12 miles: a hill, a valley or the sea can make a real difference over a few miles.
| Town | July high | January low | Rain a year |
|---|---|---|---|
| Pontneddfechan | 20.2°C | 1.9°C | 1,788 mm |
| Glyn-neath 1.7 mi | 20.7°C about the same | 2.4°C 0.6°C milder | 1,605 mm |
| Cwmgwrach 2.7 mi | 20.7°C about the same | 2.4°C 0.6°C milder | 1,605 mm |
| Seven Sisters 5.3 mi | 20.2°C about the same | 1.9°C about the same | 1,921 mm |
| Resolven 5.6 mi | 18.2°C 2.1°C cooler | 2.4°C 0.6°C milder | 2,293 mm |
| Treherbert 6.1 mi | 18.0°C 2.3°C cooler | 1.2°C 0.6°C colder | 2,687 mm |
| Aberdare 6.6 mi | 19.4°C 0.9°C cooler | 2.0°C about the same | 1,969 mm |
Pontneddfechan weather by month
Average daily high and low, mean temperature and rain, 1991–2020, for the town itself (the Met Office’s HadUK-Grid).
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 7.3°C 45°F | 1.9°C 35°F | 4.6°C | 208 mm 8.2 in |
| February | 7.6°C 46°F | 1.8°C 35°F | 4.7°C | 159 mm 6.2 in |
| March | 10.0°C 50°F | 3.1°C 38°F | 6.5°C | 131 mm 5.1 in |
| April | 12.9°C 55°F | 4.5°C 40°F | 8.7°C | 98 mm 3.8 in |
| May | 16.1°C 61°F | 7.3°C 45°F | 11.7°C | 99 mm 3.9 in |
| June | 18.6°C 65°F | 10.1°C 50°F | 14.4°C | 98 mm 3.9 in |
| July | 20.2°C 68°F | 11.9°C 53°F | 16.1°C | 109 mm 4.3 in |
| August | 19.8°C 68°F | 11.8°C 53°F | 15.8°C | 129 mm 5.1 in |
| September | 17.5°C 63°F | 9.7°C 49°F | 13.6°C | 127 mm 5.0 in |
| October | 13.7°C 57°F | 7.2°C 45°F | 10.5°C | 200 mm 7.9 in |
| November | 10.1°C 50°F | 4.3°C 40°F | 7.2°C | 204 mm 8.0 in |
| December | 7.8°C 46°F | 2.4°C 36°F | 5.1°C | 226 mm 8.9 in |
| Year | 13.5°C | 6.3°C | 9.9°C | 1,788 mm |
Where Pontneddfechan’s numbers come from
Averages over 30 years, not a forecast.
- Mean temperature, rain and day counts: HadUK-Grid 1991–2020 averages for the Met Office 2 km grid square nearest Pontneddfechan’s centre (the town is smaller than one square).
- Highs and lows: the Met Office publishes average daily maxima and minima on its 12 km grid; each is moved by the difference between the town’s 2 km mean temperature and the 12 km square’s, which carries the town’s own height and setting over.
- Weather station and sunshine: Met Office historic station data for Cardiff Bute Park, 25 miles away, months of 1991–2020 averaged.
- Comparisons: every town and city of 2,500 or more across the UK, all four nations, read the same way.
Met Office HadUK-Grid · Met Office Climate Data Portal · Historic station data. Open Government Licence v3.0.
Questions about Pontneddfechan’s climate
How warm does Pontneddfechan get in summer?
July is the warmest month, with average highs of 20.2°C (68°F). About 6 days a year reach 25°C (77°F), fewer than 71% of UK towns.
How cold does Pontneddfechan get in winter?
February nights average 1.8°C (35°F). The air drops below freezing on about 44 nights a year, and about 1 days a year stay below freezing all day.
How much rain does Pontneddfechan get?
About 1,788 mm (70 in) a year, more than almost every UK town. December is the wettest month (226 mm) and April the driest (98 mm).
Where do these figures come from?
The Met Office’s HadUK-Grid 1991–2020 averages, which turn thousands of weather stations into a map of the UK in 2 km squares; the page reads the squares inside Pontneddfechan. They are 30-year averages, not a forecast.
Contains Met Office data © Crown copyright 2026, Open Government Licence v3.0. HadUK-Grid 1991–2020 averages via the Met Office Climate Data Portal; station averages from Met Office historic station data. Today’s forecast for Pontneddfechan →
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