Weather without surprises: Lyneham keeps close to the norm for UK towns
A typical year brings 767 mm (30 in) of rain, with July afternoons around 21.9°C (71°F) and January nights around 1.7°C (35°F). By warm days alone, it ranks hotter than 61% of UK towns. November is the wettest month, March the driest. Central heating does most of its work from November to April, in months below 10°C on average.
Met Office 1991–2020 averages for the town itself.
A year in Lyneham at a glance
Each month’s typical high and low, in °C.
What a year in Lyneham feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 767 mm of rain a year
November is the wettest month and March the driest. About 19 days a year bring 10 mm (0.4 in) or more. 26th wettest of 34 Wiltshire towns of 2,500+.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Oxford
40 air frosts and 13 days of 25°C a year
On about 40 nights a year the air drops below freezing, and on about 2 days it stays below freezing all day. About 13 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 Oxford
Oxford is 35 miles north-east of Lyneham, 63 m (207 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 | Sun (hours) |
|---|---|---|---|---|---|
| January | 8.0°C | 2.4°C | 60 mm | 8.4 | 64 |
| February | 8.6°C | 2.3°C | 47 mm | 7.6 | 82 |
| March | 11.3°C | 3.6°C | 43 mm | 3.8 | 118 |
| April | 14.4°C | 5.3°C | 49 mm | 1.5 | 166 |
| May | 17.7°C | 8.2°C | 57 mm | 0.1 | 200 |
| June | 20.7°C | 11.1°C | 50 mm | 0.0 | 198 |
| July | 23.1°C | 13.1°C | 53 mm | 0.0 | 212 |
| August | 22.5°C | 13.0°C | 62 mm | 0.0 | 193 |
| September | 19.4°C | 10.7°C | 52 mm | 0.0 | 145 |
| October | 15.1°C | 8.0°C | 73 mm | 0.7 | 110 |
| November | 10.9°C | 4.9°C | 72 mm | 3.2 | 71 |
| December | 8.2°C | 2.6°C | 66 mm | 8.6 | 57 |
| Year | 15.0°C | 7.1°C | 681 mm | 34 | 1,615 |
Met Office historic station data, Oxford, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.
How Lyneham 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 Wiltshire 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 |
|---|---|---|---|
| Lyneham | 21.9°C | 1.7°C | 767 mm |
| Royal Wootton Bassett 4.0 mi | 22.1°C about the same | 1.7°C about the same | 770 mm |
| Sutton Benger 4.7 mi | 22.3°C about the same | 1.8°C about the same | 803 mm |
| Calne 4.8 mi | 21.9°C about the same | 1.8°C about the same | 802 mm |
| Derry Hill and Studley 6.2 mi | 21.5°C about the same | 1.3°C about the same | 869 mm |
| Purton 6.7 mi | 22.0°C about the same | 1.8°C about the same | 780 mm |
| Chippenham 7.5 mi | 22.0°C about the same | 1.5°C about the same | 770 mm |
Lyneham 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 | 7.5°C 46°F | 1.7°C 35°F | 4.6°C | 76 mm 3.0 in |
| February | 8.0°C 46°F | 1.5°C 35°F | 4.8°C | 56 mm 2.2 in |
| March | 10.5°C 51°F | 2.8°C 37°F | 6.7°C | 51 mm 2.0 in |
| April | 13.6°C 56°F | 4.4°C 40°F | 9.0°C | 53 mm 2.1 in |
| May | 16.8°C 62°F | 7.3°C 45°F | 12.1°C | 58 mm 2.3 in |
| June | 19.7°C 67°F | 10.3°C 50°F | 15.0°C | 55 mm 2.1 in |
| July | 21.9°C 71°F | 12.2°C 54°F | 17.0°C | 57 mm 2.3 in |
| August | 21.3°C 70°F | 12.1°C 54°F | 16.7°C | 67 mm 2.6 in |
| September | 18.7°C 66°F | 10.0°C 50°F | 14.4°C | 55 mm 2.2 in |
| October | 14.5°C 58°F | 7.4°C 45°F | 11.0°C | 80 mm 3.2 in |
| November | 10.5°C 51°F | 4.2°C 40°F | 7.4°C | 82 mm 3.2 in |
| December | 7.8°C 46°F | 2.0°C 36°F | 4.9°C | 78 mm 3.1 in |
| Year | 14.2°C | 6.3°C | 10.3°C | 767 mm |
Where Lyneham’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 Lyneham’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 Oxford, 35 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 Lyneham’s climate
How warm does Lyneham get in summer?
July is the warmest month, with average highs of 21.9°C (71°F). About 13 days a year reach 25°C (77°F), more than 61% of UK towns.
How cold does Lyneham get in winter?
February nights average 1.5°C (35°F). The air drops below freezing on about 40 nights a year, and about 2 days a year stay below freezing all day.
How much rain does Lyneham get?
About 767 mm (30 in) a year, less than 52% of UK towns. November is the wettest month (82 mm) and March the driest (51 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Oxford (35 miles away), averages 1,615 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 Lyneham. 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 Lyneham →
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