Rainfall in Three Crosses tops that of 94% of UK towns: 1,341 mm (53 in) a year
The warmest part of a July day comes in at 21.0°C (70°F) on average. The rainiest month is November; the driest is April. By frosts alone, it ranks gentler than 91% of UK towns. Windscreens need scraping on about 24 mornings a year, the nights the air drops below 0°C.
Met Office 1991–2020 averages for the town itself.
A year in Three Crosses at a glance
Each month’s typical high and low, in °C.
What a year in Three Crosses feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 1,341 mm of rain a year
November is the wettest month and April the driest. About 46 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
24 air frosts and 6 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 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 Chivenor
Chivenor is 37 miles south of Three Crosses, 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 Three Crosses 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 |
|---|---|---|---|
| Three Crosses | 21.0°C | 2.7°C | 1,341 mm |
| Dunvant 1.2 mi | 21.0°C about the same | 3.0°C about the same | 1,340 mm |
| Gowerton 1.9 mi | 21.0°C about the same | 3.0°C about the same | 1,345 mm |
| Pen-clawdd 1.9 mi | 21.0°C about the same | 2.9°C about the same | 1,332 mm |
| Loughor 2.5 mi | 21.0°C about the same | 3.0°C about the same | 1,267 mm |
| Gorseinon 3.0 mi | 21.0°C about the same | 3.0°C about the same | 1,346 mm |
| Bishopston 3.4 mi | 20.6°C about the same | 3.4°C 0.7°C milder | 1,073 mm |
Three Crosses 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 | 8.1°C 47°F | 2.7°C 37°F | 5.4°C | 145 mm 5.7 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 | 10.8°C | 1,341 mm |
Where Three Crosses’s numbers come from
Averages over 30 years, not a forecast.
- Mean temperature, rain and day counts: HadUK-Grid 1991–2020 averages for the 1 Met Office 2 km grid square whose centre lies inside Three Crosses’s built-up area.
- 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, 37 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 Three Crosses’s climate
How warm does Three Crosses get in summer?
July is the warmest month, with average highs of 21.0°C (70°F). About 6 days a year reach 25°C (77°F), fewer than 74% of UK towns.
How cold does Three Crosses get in winter?
January nights average 2.7°C (37°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 Three Crosses get?
About 1,341 mm (53 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 Three Crosses. 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 Three Crosses →
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.