Dunster has some of the mildest winter nights among UK towns
Midsummer highs settle at about 20.7°C (69°F). It is a wet place: more rain falls here than on 80% of UK towns. Seasons differ by 18°C, from the coldest nights to the warmest afternoons. From June to September, highs of 18–21°C make it easy to spend the day outdoors.
Met Office 1991–2020 averages for the town itself.
A year in Dunster at a glance
Each month’s typical high and low, in °C.
What a year in Dunster feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 1,040 mm of rain a year
December is the wettest month and May the driest. About 25 days a year bring 10 mm (0.4 in) or more.
Rain by month
Millimetres
18 air frosts and 6 days of 25°C a year
On about 18 nights a year the air drops below freezing; days that stay below freezing are rare. About 6 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 Cardiff Bute Park
Cardiff Bute Park is 24 miles north-east of Dunster, 9 m (30 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 | 8.6°C | 2.5°C | 127 mm | 8.1 |
| February | 9.1°C | 2.5°C | 93 mm | 7.5 |
| March | 11.3°C | 3.9°C | 85 mm | 3.9 |
| April | 14.4°C | 5.7°C | 72 mm | 1.4 |
| May | 17.4°C | 8.5°C | 78 mm | 0.0 |
| June | 20.1°C | 11.3°C | 73 mm | 0.0 |
| July | 21.8°C | 13.1°C | 84 mm | 0.0 |
| August | 21.4°C | 12.9°C | 105 mm | 0.0 |
| September | 19.1°C | 10.7°C | 87 mm | 0.0 |
| October | 15.2°C | 8.0°C | 128 mm | 1.0 |
| November | 11.6°C | 4.9°C | 131 mm | 3.7 |
| December | 9.1°C | 2.9°C | 140 mm | 8.3 |
| Year | 14.9°C | 7.2°C | 1,201 mm | 34 |
Met Office historic station data, Cardiff Bute Park, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.
How Dunster 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 Somerset 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 |
|---|---|---|---|
| Dunster | 20.7°C | 3.5°C | 1,040 mm |
| Minehead 1.8 mi | 19.7°C 1.0°C cooler | 3.7°C about the same | 1,092 mm |
| Watchet 5.2 mi | 21.1°C about the same | 3.6°C about the same | 756 mm |
| Williton 5.7 mi | 20.7°C about the same | 3.3°C about the same | 854 mm |
| Porlock 6.6 mi | 19.5°C 1.2°C cooler | 3.0°C about the same | 1,402 mm |
| Wiveliscombe 11.4 mi | 20.8°C about the same | 2.5°C 1.0°C colder | 1,095 mm |
Dunster 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 | 8.5°C 47°F | 3.5°C 38°F | 6.0°C | 113 mm 4.5 in |
| February | 8.5°C 47°F | 2.8°C 37°F | 5.6°C | 93 mm 3.7 in |
| March | 10.3°C 51°F | 3.6°C 38°F | 7.0°C | 72 mm 2.8 in |
| April | 13.0°C 55°F | 5.1°C 41°F | 9.0°C | 68 mm 2.7 in |
| May | 16.1°C 61°F | 7.6°C 46°F | 11.8°C | 58 mm 2.3 in |
| June | 18.9°C 66°F | 10.5°C 51°F | 14.7°C | 64 mm 2.5 in |
| July | 20.7°C 69°F | 12.3°C 54°F | 16.5°C | 64 mm 2.5 in |
| August | 20.3°C 68°F | 12.2°C 54°F | 16.3°C | 70 mm 2.8 in |
| September | 18.2°C 65°F | 10.6°C 51°F | 14.4°C | 72 mm 2.8 in |
| October | 14.4°C 58°F | 8.2°C 47°F | 11.3°C | 109 mm 4.3 in |
| November | 11.0°C 52°F | 5.6°C 42°F | 8.3°C | 126 mm 5.0 in |
| December | 8.5°C 47°F | 3.5°C 38°F | 6.0°C | 130 mm 5.1 in |
| Year | 14.0°C | 7.1°C | 10.6°C | 1,040 mm |
Where Dunster’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 Dunster’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 Cardiff Bute Park, 24 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 Dunster’s climate
How warm does Dunster get in summer?
July is the warmest month, with average highs of 20.7°C (69°F). About 6 days a year reach 25°C (77°F), fewer than 73% of UK towns.
How cold does Dunster get in winter?
February nights average 2.8°C (37°F). The air drops below freezing on about 18 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Dunster get?
About 1,040 mm (41 in) a year, more than 80% of UK towns. December is the wettest month (130 mm) and May the driest (58 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 Dunster. 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 Dunster →
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.