Pen-clawdd is wetter than 94% of UK towns: 1,332 mm (52 in) of rain a year
The coldest hours of a January night bottom out at 2.9°C (37°F) on average. The gap between a January night and a July afternoon is 18°C. By January nights alone, it runs milder than 93% of UK towns. Radiators earn their keep from November to April, the months that average under 10°C.
Met Office 1991–2020 averages for the town itself.
A year in Pen-clawdd at a glance
Each month’s typical high and low, in °C.
What a year in Pen-clawdd feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 1,332 mm of rain a year
November is the wettest month and April the driest. About 42 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
27 air frosts and 9 days of 25°C a year
On about 27 nights a year the air drops below freezing; days that stay below freezing are rare. About 9 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 Chivenor
Chivenor is 38 miles south of Pen-clawdd, 6 m (20 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 | 9.1°C | 3.6°C | 91 mm | 5.4 |
| February | 9.4°C | 3.4°C | 70 mm | 5.0 |
| March | 11.2°C | 4.5°C | 60 mm | 2.6 |
| April | 13.7°C | 5.9°C | 56 mm | 0.9 |
| May | 16.5°C | 8.6°C | 55 mm | 0.0 |
| June | 19.0°C | 11.4°C | 68 mm | 0.0 |
| July | 20.7°C | 13.3°C | 74 mm | 0.0 |
| August | 20.5°C | 13.4°C | 77 mm | 0.0 |
| September | 18.8°C | 11.5°C | 70 mm | 0.0 |
| October | 15.4°C | 9.1°C | 107 mm | 0.4 |
| November | 12.1°C | 6.2°C | 106 mm | 1.8 |
| December | 9.9°C | 4.3°C | 107 mm | 4.6 |
| Year | 14.7°C | 7.9°C | 941 mm | 21 |
Met Office historic station data, Chivenor, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.
How Pen-clawdd 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 West Glamorgan 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 |
|---|---|---|---|
| Pen-clawdd | 21.0°C | 2.9°C | 1,332 mm |
| Three Crosses 1.9 mi | 21.0°C about the same | 2.7°C about the same | 1,341 mm |
| Loughor 2.4 mi | 21.0°C about the same | 3.0°C about the same | 1,267 mm |
| Bryn 3.0 mi | 21.0°C about the same | 2.9°C about the same | 1,257 mm |
| Dunvant 3.1 mi | 21.0°C about the same | 3.0°C about the same | 1,340 mm |
| Gowerton 3.3 mi | 21.0°C about the same | 3.0°C about the same | 1,345 mm |
| Gorseinon 3.3 mi | 21.0°C about the same | 3.0°C about the same | 1,346 mm |
Pen-clawdd 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 | 8.3°C 47°F | 2.9°C 37°F | 5.6°C | 136 mm 5.4 in |
| February | 8.7°C 48°F | 2.8°C 37°F | 5.7°C | 101 mm 4.0 in |
| March | 10.7°C 51°F | 3.9°C 39°F | 7.3°C | 92 mm 3.6 in |
| April | 13.7°C 57°F | 5.6°C 42°F | 9.6°C | 77 mm 3.0 in |
| May | 16.8°C 62°F | 8.3°C 47°F | 12.5°C | 80 mm 3.1 in |
| June | 19.3°C 67°F | 11.1°C 52°F | 15.2°C | 81 mm 3.2 in |
| July | 21.0°C 70°F | 13.0°C 55°F | 16.9°C | 94 mm 3.7 in |
| August | 20.7°C 69°F | 12.9°C 55°F | 16.8°C | 110 mm 4.3 in |
| September | 18.5°C 65°F | 10.9°C 52°F | 14.7°C | 102 mm 4.0 in |
| October | 14.9°C 59°F | 8.3°C 47°F | 11.6°C | 152 mm 6.0 in |
| November | 11.3°C 52°F | 5.4°C 42°F | 8.3°C | 157 mm 6.2 in |
| December | 8.8°C 48°F | 3.3°C 38°F | 6.0°C | 151 mm 5.9 in |
| Year | 14.4°C | 7.4°C | 10.9°C | 1,332 mm |
Where Pen-clawdd’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 Pen-clawdd’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 Chivenor, 38 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 Pen-clawdd’s climate
How warm does Pen-clawdd get in summer?
July is the warmest month, with average highs of 21.0°C (70°F). About 9 days a year reach 25°C (77°F), fewer than 58% of UK towns.
How cold does Pen-clawdd get in winter?
February nights average 2.8°C (37°F). The air drops below freezing on about 27 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Pen-clawdd get?
About 1,332 mm (52 in) a year, more than 94% of UK towns. November is the wettest month (157 mm) and April the driest (77 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 Pen-clawdd. 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 Pen-clawdd →
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