Hardly any UK towns collect more rain than Resolven: 2,293 mm (90 in) a year
Expect July afternoons of about 18.2°C (65°F). Rain peaks in December and eases off in May. By July afternoons alone, it runs cooler than 98% of UK towns. Frost greets about 38 mornings a year, so leave time to clear the car.
Met Office 1991–2020 averages for the town itself.
A year in Resolven at a glance
Each month’s typical high and low, in °C.
What a year in Resolven feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 2,293 mm of rain a year
December is the wettest month and May the driest. About 66 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
38 air frosts and 7 days of 25°C a year
On about 38 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 7 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 27 miles south-east of Resolven, 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 Resolven 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 |
|---|---|---|---|
| Resolven | 18.2°C | 2.4°C | 2,293 mm |
| Creunant 2.7 mi | 19.8°C 1.7°C warmer | 2.0°C about the same | 1,868 mm |
| Cwmgwrach 2.9 mi | 20.7°C 2.5°C warmer | 2.4°C about the same | 1,605 mm |
| Seven Sisters 3.9 mi | 20.2°C 2.0°C warmer | 1.9°C about the same | 1,921 mm |
| Glyn-neath 4.0 mi | 20.7°C 2.5°C warmer | 2.4°C about the same | 1,605 mm |
| Cilfrew 4.0 mi | 19.8°C 1.7°C warmer | 2.5°C about the same | 1,827 mm |
| Tonna 4.3 mi | 20.4°C 2.3°C warmer | 2.7°C about the same | 1,570 mm |
Resolven 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 | 7.9°C 46°F | 2.4°C 36°F | 5.2°C | 200 mm 7.9 in |
| February | 6.2°C 43°F | 0.5°C 33°F | 3.4°C | 186 mm 7.3 in |
| March | 8.3°C 47°F | 1.5°C 35°F | 4.9°C | 167 mm 6.6 in |
| April | 10.9°C 52°F | 2.8°C 37°F | 6.9°C | 134 mm 5.3 in |
| May | 14.2°C 58°F | 5.8°C 42°F | 10.0°C | 130 mm 5.1 in |
| June | 16.4°C 62°F | 8.0°C 46°F | 12.1°C | 144 mm 5.7 in |
| July | 18.2°C 65°F | 10.2°C 50°F | 14.1°C | 178 mm 7.0 in |
| August | 17.7°C 64°F | 10.1°C 50°F | 13.9°C | 189 mm 7.4 in |
| September | 15.8°C 60°F | 8.4°C 47°F | 12.1°C | 182 mm 7.2 in |
| October | 12.2°C 54°F | 5.8°C 42°F | 9.0°C | 256 mm 10.1 in |
| November | 8.8°C 48°F | 3.1°C 38°F | 5.9°C | 257 mm 10.1 in |
| December | 6.7°C 44°F | 1.3°C 34°F | 4.0°C | 271 mm 10.7 in |
| Year | 11.9°C | 5.0°C | 8.5°C | 2,293 mm |
Where Resolven’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 Resolven’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, 27 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 Resolven’s climate
How warm does Resolven get in summer?
July is the warmest month, with average highs of 18.2°C (65°F). About 7 days a year reach 25°C (77°F), fewer than 66% of UK towns.
How cold does Resolven get in winter?
February nights average 0.5°C (33°F). The air drops below freezing on about 38 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Resolven get?
About 2,293 mm (90 in) a year, more than almost every UK town. December is the wettest month (271 mm) and May the driest (130 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 Resolven. 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 Resolven →
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.