Hardly any UK towns see softer January nights than Duporth
In July the day’s top temperature is typically 20.5°C (69°F). Wet weather is most frequent in November and least in June. Rain is plentiful here, more than falls on 90% of UK towns. Comfortable outdoor weather lasts from June to September, with highs of 19–21°C.
Met Office 1991–2020 averages for the town itself.
A year in Duporth at a glance
Each month’s typical high and low, in °C.
What a year in Duporth feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 1,221 mm of rain a year
November is the wettest month and June the driest. About 39 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Camborne
12 air frosts and 3 days of 25°C a year
On about 12 nights a year the air drops below freezing; days that stay below freezing are rare. About 3 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 Camborne
Camborne is 26 miles west of Duporth, 87 m (285 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 | 9.2°C | 4.9°C | 121 mm | 2.2 | 60 |
| February | 9.1°C | 4.6°C | 95 mm | 2.1 | 82 |
| March | 10.2°C | 5.4°C | 72 mm | 1.1 | 121 |
| April | 12.1°C | 6.6°C | 73 mm | 0.0 | 181 |
| May | 14.5°C | 8.8°C | 61 mm | 0.0 | 208 |
| June | 16.9°C | 11.2°C | 63 mm | 0.0 | 205 |
| July | 18.7°C | 13.2°C | 69 mm | 0.0 | 190 |
| August | 19.0°C | 13.4°C | 79 mm | 0.0 | 180 |
| September | 17.5°C | 12.0°C | 78 mm | 0.0 | 154 |
| October | 14.6°C | 10.0°C | 111 mm | 0.0 | 108 |
| November | 11.8°C | 7.4°C | 130 mm | 0.2 | 68 |
| December | 9.9°C | 5.6°C | 126 mm | 1.7 | 54 |
| Year | 13.6°C | 8.6°C | 1,076 mm | 7 | 1,611 |
Met Office historic station data, Camborne, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Kipp & Zonen recorder.
How Duporth 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 |
|---|---|---|---|
| Duporth | 20.5°C | 4.2°C | 1,221 mm |
| Carlyon Bay 1.0 mi | 20.6°C about the same | 4.3°C about the same | 1,220 mm |
| St Austell 1.1 mi | 20.5°C about the same | 4.0°C about the same | 1,216 mm |
| Polgooth 2.5 mi | 20.2°C about the same | 3.8°C about the same | 1,236 mm |
| St Blazey 2.6 mi | 20.5°C about the same | 4.1°C about the same | 1,215 mm |
| Trewoon 2.6 mi | 19.6°C 0.9°C cooler | 3.8°C about the same | 1,358 mm |
| Penwithick 3.1 mi | 19.7°C 0.9°C cooler | 3.3°C 0.8°C colder | 1,448 mm |
Duporth 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 | 9.4°C 49°F | 4.2°C 40°F | 6.8°C | 135 mm 5.3 in |
| February | 9.4°C 49°F | 4.0°C 39°F | 6.7°C | 109 mm 4.3 in |
| March | 10.9°C 52°F | 4.9°C 41°F | 7.9°C | 90 mm 3.5 in |
| April | 13.2°C 56°F | 6.1°C 43°F | 9.7°C | 74 mm 2.9 in |
| May | 16.0°C 61°F | 8.4°C 47°F | 12.1°C | 67 mm 2.6 in |
| June | 18.6°C 66°F | 11.2°C 52°F | 14.9°C | 66 mm 2.6 in |
| July | 20.5°C 69°F | 13.0°C 55°F | 16.7°C | 83 mm 3.3 in |
| August | 20.2°C 68°F | 13.0°C 55°F | 16.6°C | 81 mm 3.2 in |
| September | 18.5°C 65°F | 11.5°C 53°F | 15.0°C | 84 mm 3.3 in |
| October | 15.3°C 60°F | 9.4°C 49°F | 12.3°C | 131 mm 5.2 in |
| November | 12.2°C 54°F | 6.7°C 44°F | 9.5°C | 155 mm 6.1 in |
| December | 10.2°C 50°F | 4.9°C 41°F | 7.5°C | 147 mm 5.8 in |
| Year | 14.5°C | 8.1°C | 11.3°C | 1,221 mm |
Where Duporth’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 Duporth’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 Camborne, 26 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 Duporth’s climate
How warm does Duporth get in summer?
July is the warmest month, with average highs of 20.5°C (69°F). About 3 days a year reach 25°C (77°F), fewer than 85% of UK towns.
How cold does Duporth get in winter?
February nights average 4.0°C (39°F). The air drops below freezing on about 12 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Duporth get?
About 1,221 mm (48 in) a year, more than 90% of UK towns. November is the wettest month (155 mm) and June the driest (66 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Camborne (26 miles away), averages 1,611 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 Duporth. 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 Duporth →
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.