Photo: N Chadwick · CC BY-SA 2.0Summer warmth: High Wycombe logs more 25-degree days than 81% of UK towns
January nights here settle around 2.0°C (36°F). A year here swings 20°C from midwinter lows to midsummer highs. Winters are mild: January nights here are milder than in 67% of UK towns. Keep the boiler serviced for the months from November to April, which average under 10°C.
Met Office 1991–2020 averages for the town itself.
A year in High Wycombe at a glance
Each month’s typical high and low, in °C.
What a year in High Wycombe feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 781 mm of rain a year
November is the wettest month and March the driest. About 22 days a year bring 10 mm (0.4 in) or more. 11th wettest of 39 Buckinghamshire towns of 2,500+.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Heathrow
41 air frosts and 17 days of 25°C a year
On about 41 nights a year the air drops below freezing, and on about 2 days it stays below freezing all day. About 17 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 Heathrow
Heathrow is 17 miles south-east of High Wycombe, 25 m (82 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 | Sun (hours) |
|---|---|---|---|---|---|
| January | 8.4°C | 2.7°C | 59 mm | 6.8 | 59 |
| February | 9.0°C | 2.6°C | 45 mm | 6.2 | 76 |
| March | 11.7°C | 4.1°C | 39 mm | 3.0 | 120 |
| April | 15.0°C | 6.0°C | 42 mm | 0.8 | 169 |
| May | 18.4°C | 9.1°C | 46 mm | 0.0 | 197 |
| June | 21.6°C | 12.0°C | 47 mm | 0.0 | 197 |
| July | 23.9°C | 14.2°C | 46 mm | 0.0 | 206 |
| August | 23.4°C | 14.1°C | 54 mm | 0.0 | 192 |
| September | 20.2°C | 11.6°C | 50 mm | 0.0 | 150 |
| October | 15.8°C | 8.8°C | 65 mm | 0.3 | 111 |
| November | 11.5°C | 5.3°C | 67 mm | 2.7 | 68 |
| December | 8.8°C | 3.1°C | 57 mm | 7.2 | 53 |
| Year | 15.6°C | 7.8°C | 616 mm | 27 | 1,597 |
Met Office historic station data, Heathrow (London Airport), 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Kipp & Zonen recorder.
How High Wycombe 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 Buckinghamshire 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 |
|---|---|---|---|
| High Wycombe | 22.3°C | 2.0°C | 781 mm |
| Downley 1.6 mi | 22.3°C about the same | 2.0°C about the same | 797 mm |
| Hazlemere 2.3 mi | 22.3°C about the same | 1.7°C about the same | 817 mm |
| Hughenden Valley 2.6 mi | 21.8°C 0.5°C cooler | 1.8°C about the same | 828 mm |
| Flackwell Heath and Wooburn Green 3.0 mi | 23.0°C 0.7°C warmer | 1.5°C about the same | 709 mm |
| Marlow Bottom 3.1 mi | 22.7°C about the same | 1.4°C 0.6°C colder | 787 mm |
| Great Kingshill 3.1 mi | 22.3°C about the same | 1.6°C about the same | 816 mm |
High Wycombe 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 | 7.2°C 45°F | 2.0°C 36°F | 4.6°C | 84 mm 3.3 in |
| February | 7.9°C 46°F | 2.0°C 36°F | 4.9°C | 57 mm 2.3 in |
| March | 10.6°C 51°F | 3.3°C 38°F | 6.9°C | 49 mm 1.9 in |
| April | 13.7°C 57°F | 5.0°C 41°F | 9.4°C | 54 mm 2.1 in |
| May | 16.8°C 62°F | 7.9°C 46°F | 12.4°C | 56 mm 2.2 in |
| June | 19.8°C 68°F | 10.7°C 51°F | 15.3°C | 53 mm 2.1 in |
| July | 22.3°C 72°F | 12.7°C 55°F | 17.5°C | 54 mm 2.1 in |
| August | 21.9°C 71°F | 12.7°C 55°F | 17.2°C | 67 mm 2.6 in |
| September | 18.6°C 66°F | 10.3°C 51°F | 14.5°C | 60 mm 2.4 in |
| October | 14.3°C 58°F | 7.9°C 46°F | 11.0°C | 84 mm 3.3 in |
| November | 10.1°C 50°F | 4.5°C 40°F | 7.4°C | 87 mm 3.4 in |
| December | 7.6°C 46°F | 2.4°C 36°F | 5.0°C | 78 mm 3.1 in |
| Year | 14.2°C | 6.8°C | 10.5°C | 781 mm |
Where High Wycombe’s numbers come from
Averages over 30 years, not a forecast.
- Mean temperature, rain and day counts: HadUK-Grid 1991–2020 averages for the 5 Met Office 2 km grid squares whose centre lies inside High Wycombe’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 Heathrow (London Airport), 17 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 High Wycombe’s climate
How warm does High Wycombe get in summer?
July is the warmest month, with average highs of 22.3°C (72°F). About 17 days a year reach 25°C (77°F), more than 81% of UK towns.
How cold does High Wycombe get in winter?
February nights average 2.0°C (36°F). The air drops below freezing on about 41 nights a year, and about 2 days a year stay below freezing all day.
How much rain does High Wycombe get?
About 781 mm (31 in) a year, more than 51% of UK towns. November is the wettest month (87 mm) and March the driest (49 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Heathrow (17 miles away), averages 1,597 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 High Wycombe. 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 High Wycombe →
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.