Caer-went gets fewer frosts than 90% of UK towns
On a normal July day the thermometer tops out near 21.4°C (70°F). By rainfall alone, it ranks wetter than 80% of UK towns. A year here swings 19°C from midwinter lows to midsummer highs. Homes need heating from November to April, the months averaging under 10°C.
Met Office 1991–2020 averages for the town itself.
A year in Caer-went at a glance
Each month’s typical high and low, in °C.
What a year in Caer-went feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 1,041 mm of rain a year
December is the wettest month and April the driest. About 28 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
24 air frosts and 10 days of 25°C a year
On about 24 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 10 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 20 miles south-west of Caer-went, 9 m (30 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 |
|---|---|---|---|---|
| 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 Caer-went 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 Gwent 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 |
|---|---|---|---|
| Caer-went | 21.4°C | 2.8°C | 1,041 mm |
| Caldicot 1.2 mi | 21.6°C about the same | 2.9°C about the same | 850 mm |
| Rogiet 1.6 mi | 21.6°C about the same | 2.9°C about the same | 973 mm |
| Portskewett 2.1 mi | 21.6°C about the same | 2.9°C about the same | 850 mm |
| Undy and Magor 3.2 mi | 22.3°C 0.9°C warmer | 2.7°C about the same | 979 mm |
| Chepstow 4.1 mi | 21.7°C about the same | 2.6°C about the same | 997 mm |
| Beachley 4.8 mi | 21.4°C about the same | 2.7°C about the same | 989 mm |
Caer-went 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 | 8.4°C 47°F | 2.8°C 37°F | 5.6°C | 100 mm 3.9 in |
| February | 8.5°C 47°F | 2.3°C 36°F | 5.4°C | 81 mm 3.2 in |
| March | 10.7°C 51°F | 3.6°C 38°F | 7.1°C | 72 mm 2.8 in |
| April | 13.6°C 57°F | 5.2°C 41°F | 9.5°C | 67 mm 2.6 in |
| May | 16.7°C 62°F | 8.0°C 46°F | 12.4°C | 72 mm 2.8 in |
| June | 19.5°C 67°F | 10.9°C 52°F | 15.2°C | 69 mm 2.7 in |
| July | 21.4°C 70°F | 12.9°C 55°F | 17.1°C | 67 mm 2.6 in |
| August | 20.9°C 70°F | 12.7°C 55°F | 16.9°C | 94 mm 3.7 in |
| September | 18.5°C 65°F | 10.6°C 51°F | 14.6°C | 77 mm 3.0 in |
| October | 14.6°C 58°F | 8.0°C 46°F | 11.4°C | 109 mm 4.3 in |
| November | 10.9°C 52°F | 5.1°C 41°F | 8.0°C | 115 mm 4.5 in |
| December | 8.4°C 47°F | 2.8°C 37°F | 5.6°C | 120 mm 4.7 in |
| Year | 14.3°C | 7.1°C | 10.7°C | 1,041 mm |
Where Caer-went’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 Caer-went’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, 20 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 Caer-went’s climate
How warm does Caer-went get in summer?
July is the warmest month, with average highs of 21.4°C (70°F). About 10 days a year reach 25°C (77°F), fewer than 53% of UK towns.
How cold does Caer-went get in winter?
February nights average 2.3°C (36°F). The air drops below freezing on about 24 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Caer-went get?
About 1,041 mm (41 in) a year, more than 80% of UK towns. December is the wettest month (120 mm) and April the driest (67 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 Caer-went. 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 Caer-went →
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