Lewannick sits near the top of UK towns for rain, with 1,566 mm (62 in) a year
On a normal July day the thermometer tops out near 18.9°C (66°F). November is the wettest month, May the driest. Its July afternoons are the coolest among its 6 nearest neighbours. For walks and days out, the stretch from June to September brings highs of 17–19°C.
Met Office 1991–2020 averages for the town itself.
A year in Lewannick at a glance
Each month’s typical high and low, in °C.
What a year in Lewannick feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 1,566 mm of rain a year
November is the wettest month and May the driest. About 50 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
37 air frosts and 4 days of 25°C a year
On about 37 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 Chivenor
Chivenor is 36 miles north of Lewannick, 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 Lewannick 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 Cornwall 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 |
|---|---|---|---|
| Lewannick | 18.9°C | 2.4°C | 1,566 mm |
| Launceston 4.2 mi | 20.4°C 1.5°C warmer | 2.7°C about the same | 1,269 mm |
| Withnoe 4.5 mi | 20.8°C 1.9°C warmer | 3.0°C 0.5°C milder | 1,154 mm |
| Pensilva 6.8 mi | 19.7°C 0.8°C warmer | 2.3°C about the same | 1,538 mm |
| Kelly Bray 7.8 mi | 20.3°C 1.4°C warmer | 2.3°C about the same | 1,446 mm |
| St Cleer 7.8 mi | 19.6°C 0.7°C warmer | 2.6°C about the same | 1,577 mm |
| Callington 8.6 mi | 20.7°C 1.7°C warmer | 2.4°C about the same | 1,308 mm |
Lewannick 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 | 7.9°C 46°F | 2.4°C 36°F | 5.1°C | 166 mm 6.5 in |
| February | 7.8°C 46°F | 2.0°C 36°F | 4.9°C | 140 mm 5.5 in |
| March | 9.6°C 49°F | 3.0°C 37°F | 6.3°C | 111 mm 4.4 in |
| April | 12.1°C 54°F | 4.2°C 39°F | 8.0°C | 99 mm 3.9 in |
| May | 14.8°C 59°F | 6.5°C 44°F | 10.6°C | 86 mm 3.4 in |
| June | 17.3°C 63°F | 9.1°C 48°F | 13.2°C | 90 mm 3.5 in |
| July | 18.9°C 66°F | 11.0°C 52°F | 15.1°C | 103 mm 4.0 in |
| August | 18.8°C 66°F | 10.9°C 52°F | 14.8°C | 111 mm 4.4 in |
| September | 17.0°C 63°F | 9.2°C 48°F | 13.0°C | 108 mm 4.3 in |
| October | 13.7°C 57°F | 7.2°C 45°F | 10.5°C | 169 mm 6.7 in |
| November | 10.4°C 51°F | 4.5°C 40°F | 7.5°C | 192 mm 7.6 in |
| December | 8.3°C 47°F | 2.8°C 37°F | 5.6°C | 191 mm 7.5 in |
| Year | 13.0°C | 6.1°C | 9.6°C | 1,566 mm |
Where Lewannick’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 Lewannick’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, 36 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 Lewannick’s climate
How warm does Lewannick 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 81% of UK towns.
How cold does Lewannick get in winter?
February nights average 2.0°C (36°F). The air drops below freezing on about 37 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Lewannick get?
About 1,566 mm (62 in) a year, more than 97% of UK towns. November is the wettest month (192 mm) and May the driest (86 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 Lewannick. 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 Lewannick →
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.