Halwill Junction is wetter than 92% of UK towns: 1,295 mm (51 in) of rain a year
Sunny July days climb to about 19.7°C (67°F). Of all months, December brings the most rain and May the least. By January nights alone, it runs milder than 88% of UK towns. Gritters and ice scrapers earn their keep on roughly 32 nights a year below 0°C.
Met Office 1991–2020 averages for the town itself.
A year in Halwill Junction at a glance
Each month’s typical high and low, in °C.
What a year in Halwill Junction feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 1,295 mm of rain a year
December is the wettest month and May the driest. About 39 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
32 air frosts and 5 days of 25°C a year
On about 32 nights a year the air drops below freezing, and on about under 1 days it stays below freezing all day. About 5 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 22 miles north of Halwill Junction, 6 m (20 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 | 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 Halwill Junction 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 Devon 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 |
|---|---|---|---|
| Halwill Junction | 19.7°C | 2.6°C | 1,295 mm |
| Holsworthy 6.8 mi | 20.0°C about the same | 2.6°C about the same | 1,172 mm |
| Okehampton 9.7 mi | 19.6°C about the same | 2.8°C about the same | 1,319 mm |
| Launceston 11.8 mi | 20.4°C 0.7°C warmer | 2.7°C about the same | 1,269 mm |
| Withnoe 11.9 mi | 20.8°C 1.2°C warmer | 3.0°C about the same | 1,154 mm |
Halwill Junction 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 | 8.2°C 47°F | 2.6°C 37°F | 5.4°C | 133 mm 5.2 in |
| February | 8.2°C 47°F | 2.1°C 36°F | 5.1°C | 108 mm 4.3 in |
| March | 10.0°C 50°F | 3.0°C 37°F | 6.5°C | 90 mm 3.5 in |
| April | 12.5°C 55°F | 4.3°C 40°F | 8.5°C | 78 mm 3.1 in |
| May | 15.5°C 60°F | 6.9°C 44°F | 11.1°C | 73 mm 2.9 in |
| June | 18.0°C 64°F | 9.4°C 49°F | 13.7°C | 81 mm 3.2 in |
| July | 19.7°C 67°F | 11.3°C 52°F | 15.5°C | 95 mm 3.7 in |
| August | 19.6°C 67°F | 11.4°C 53°F | 15.5°C | 99 mm 3.9 in |
| September | 17.6°C 64°F | 9.6°C 49°F | 13.6°C | 94 mm 3.7 in |
| October | 14.1°C 57°F | 7.4°C 45°F | 10.8°C | 139 mm 5.5 in |
| November | 10.8°C 51°F | 4.9°C 41°F | 7.8°C | 148 mm 5.8 in |
| December | 8.6°C 47°F | 2.9°C 37°F | 5.7°C | 157 mm 6.2 in |
| Year | 13.6°C | 6.3°C | 9.9°C | 1,295 mm |
Where Halwill Junction’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 Halwill Junction’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, 22 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 Halwill Junction’s climate
How warm does Halwill Junction get in summer?
July is the warmest month, with average highs of 19.7°C (67°F). About 5 days a year reach 25°C (77°F), fewer than 78% of UK towns.
How cold does Halwill Junction get in winter?
February nights average 2.1°C (36°F). The air drops below freezing on about 32 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Halwill Junction get?
About 1,295 mm (51 in) a year, more than 92% of UK towns. December is the wettest month (157 mm) and May the driest (73 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 Halwill Junction. 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 Halwill Junction →
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