Crymych sits near the top of UK towns for rain, with 1,695 mm (67 in) a year
A clear January night here typically dips to 2.0°C (36°F). By July afternoons alone, it runs cooler than 93% of UK towns. Of all months, December brings the most rain and May the least. Warm coats and heating bills mark the months from November to April, when means dip under 10°C.
Met Office 1991–2020 averages for the town itself.
A year in Crymych at a glance
Each month’s typical high and low, in °C.
What a year in Crymych feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 1,695 mm of rain a year
December is the wettest month and May the driest. About 59 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Aberporth
40 air frosts and 4 days of 25°C a year
On about 40 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 4 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 Aberporth
Aberporth is 12 miles north of Crymych, 133 m (436 ft) above sea level. It is the nearest of the 37 long-running stations the Met Office publishes in full.
| Month | High | Low | Rain | Air frosts | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.8°C | 3.4°C | 90 mm | 4.5 | 60 |
| February | 7.9°C | 3.3°C | 67 mm | 3.8 | 79 |
| March | 9.4°C | 4.2°C | 58 mm | 1.8 | 127 |
| April | 11.6°C | 5.7°C | 54 mm | 0.4 | 172 |
| May | 14.3°C | 8.2°C | 55 mm | 0.0 | 210 |
| June | 16.6°C | 10.7°C | 64 mm | 0.0 | 203 |
| July | 18.3°C | 12.5°C | 67 mm | 0.0 | 187 |
| August | 18.3°C | 12.7°C | 75 mm | 0.0 | 169 |
| September | 16.7°C | 11.2°C | 71 mm | 0.0 | 141 |
| October | 13.6°C | 8.9°C | 107 mm | 0.0 | 99 |
| November | 10.5°C | 6.2°C | 117 mm | 0.6 | 59 |
| December | 8.5°C | 4.1°C | 107 mm | 3.5 | 49 |
| Year | 12.8°C | 7.6°C | 931 mm | 15 | 1,554 |
Met Office historic station data, Aberporth, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Kipp & Zonen recorder.
How Crymych 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 Dyfed 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 |
|---|---|---|---|
| Crymych | 18.9°C | 2.0°C | 1,695 mm |
| St Dogmaels 7.6 mi | 19.6°C 0.7°C warmer | 3.3°C 1.3°C milder | 1,083 mm |
| Cardigan 7.8 mi | 19.0°C about the same | 3.2°C 1.2°C milder | 1,243 mm |
| Newcastle Emlyn 8.8 mi | 20.0°C 1.1°C warmer | 2.4°C about the same | 1,278 mm |
| Whitland 10.8 mi | 20.5°C 1.6°C warmer | 2.3°C about the same | 1,414 mm |
| Aberporth 11.9 mi | 19.0°C about the same | 3.3°C 1.3°C milder | 1,236 mm |
Crymych 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 | 7.4°C 45°F | 2.0°C 36°F | 4.7°C | 175 mm 6.9 in |
| February | 7.6°C 46°F | 1.8°C 35°F | 4.8°C | 117 mm 4.6 in |
| March | 9.3°C 49°F | 2.6°C 37°F | 5.9°C | 121 mm 4.8 in |
| April | 12.0°C 54°F | 3.9°C 39°F | 7.9°C | 102 mm 4.0 in |
| May | 14.9°C 59°F | 6.2°C 43°F | 10.5°C | 100 mm 3.9 in |
| June | 17.3°C 63°F | 8.8°C 48°F | 13.0°C | 108 mm 4.3 in |
| July | 18.9°C 66°F | 10.8°C 51°F | 14.8°C | 111 mm 4.4 in |
| August | 18.7°C 66°F | 10.9°C 52°F | 14.8°C | 131 mm 5.2 in |
| September | 16.8°C 62°F | 9.2°C 49°F | 13.0°C | 116 mm 4.6 in |
| October | 13.5°C 56°F | 7.1°C 45°F | 10.3°C | 204 mm 8.0 in |
| November | 10.3°C 50°F | 4.5°C 40°F | 7.4°C | 200 mm 7.9 in |
| December | 8.0°C 46°F | 2.6°C 37°F | 5.3°C | 210 mm 8.3 in |
| Year | 12.9°C | 5.9°C | 9.4°C | 1,695 mm |
Where Crymych’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 Crymych’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 Aberporth, 12 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 Crymych’s climate
How warm does Crymych get in summer?
July is the warmest month, with average highs of 18.9°C (66°F). About 4 days a year reach 25°C (77°F), fewer than 82% of UK towns.
How cold does Crymych get in winter?
February nights average 1.8°C (35°F). The air drops below freezing on about 40 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Crymych get?
About 1,695 mm (67 in) a year, more than 98% of UK towns. December is the wettest month (210 mm) and May the driest (100 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Aberporth (12 miles away), averages 1,554 hours of bright sunshine a year. Sunshine isn’t on the town grid, so this is the station’s figure.
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 Crymych. 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 Crymych →
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.