Dunoon sits near the top of UK towns for rain, with 2,450 mm (96 in) a year
The coldest hours of a January night bottom out at 2.1°C (36°F) on average. None of the 5 Argyll and Bute towns has cooler July afternoons. Rain peaks in December and eases off in May. Gritters and ice scrapers earn their keep on roughly 35 nights a year below 0°C.
Met Office 1991–2020 averages for the town itself.
A year in Dunoon at a glance
Each month’s typical high and low, in °C.
What a year in Dunoon feels like
Typical highs and lows by season and by month, from the Met Office’s 1991–2020 averages.
About 2,450 mm of rain a year
December is the wettest month and May the driest. About 82 days a year bring 10 mm (0.4 in) or more. The wettest of 5 Argyll and Bute towns of 2,500+.
Rain by month
Millimetres
Sunshine by month
Hours of bright sunshine at Paisley
35 air frosts and 2 days of 25°C a year
On about 35 nights a year the air drops below freezing; days that stay below freezing are rare. About 2 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 Paisley
Paisley is 21 miles south-east of Dunoon, 32 m (105 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 | 7.1°C | 1.9°C | 147 mm | 8.5 | 39 |
| February | 7.8°C | 2.1°C | 111 mm | 7.3 | 69 |
| March | 9.9°C | 3.2°C | 100 mm | 4.3 | 103 |
| April | 12.9°C | 5.1°C | 72 mm | 0.9 | 133 |
| May | 16.1°C | 7.4°C | 63 mm | 0.1 | 184 |
| June | 18.3°C | 10.2°C | 67 mm | 0.0 | 161 |
| July | 19.7°C | 12.1°C | 76 mm | 0.0 | 149 |
| August | 19.5°C | 11.9°C | 90 mm | 0.0 | 151 |
| September | 16.7°C | 9.9°C | 99 mm | 0.0 | 116 |
| October | 12.9°C | 6.8°C | 134 mm | 0.9 | 89 |
| November | 9.6°C | 4.3°C | 133 mm | 3.6 | 54 |
| December | 6.8°C | 1.5°C | 136 mm | 9.7 | 36 |
| Year | 13.1°C | 6.4°C | 1,229 mm | 35 | 1,282 |
Met Office historic station data, Paisley, 1991–2020 months averaged (a month needs 20 of the 30 years; estimated values counted, missing months left out). Sunshine: Campbell-Stokes recorder.
How Dunoon 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 Argyll and Bute 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 |
|---|---|---|---|
| Dunoon | 16.9°C | 2.1°C | 2,450 mm |
| Gourock 3.8 mi | 18.9°C 2.0°C warmer | 2.4°C about the same | 1,955 mm |
| Inverkip 4.1 mi | 18.1°C 1.2°C warmer | 2.6°C 0.6°C milder | 1,867 mm |
| Greenock 5.9 mi | 19.6°C 2.7°C warmer | 2.3°C about the same | 1,606 mm |
| Helensburgh 8.5 mi | 18.3°C 1.4°C warmer | 1.8°C about the same | 1,711 mm |
| Rothesay 9.6 mi | 18.4°C 1.5°C warmer | 2.9°C 0.8°C milder | 1,452 mm |
| Port Glasgow 10.0 mi | 18.8°C 1.9°C warmer | 1.7°C about the same | 1,701 mm |
Dunoon 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 | 7.0°C 45°F | 2.1°C 36°F | 4.5°C | 270 mm 10.6 in |
| February | 6.0°C 43°F | 0.8°C 33°F | 3.4°C | 228 mm 9.0 in |
| March | 7.4°C 45°F | 1.4°C 35°F | 4.3°C | 204 mm 8.0 in |
| April | 10.2°C 50°F | 2.9°C 37°F | 6.5°C | 145 mm 5.7 in |
| May | 13.3°C 56°F | 5.3°C 42°F | 9.1°C | 129 mm 5.1 in |
| June | 15.5°C 60°F | 8.1°C 47°F | 11.6°C | 137 mm 5.4 in |
| July | 16.9°C 62°F | 9.9°C 50°F | 13.2°C | 156 mm 6.1 in |
| August | 16.6°C 62°F | 9.9°C 50°F | 13.1°C | 184 mm 7.3 in |
| September | 14.5°C 58°F | 8.4°C 47°F | 11.4°C | 183 mm 7.2 in |
| October | 11.1°C 52°F | 5.7°C 42°F | 8.3°C | 259 mm 10.2 in |
| November | 8.1°C 47°F | 3.2°C 38°F | 5.6°C | 269 mm 10.6 in |
| December | 6.2°C 43°F | 1.2°C 34°F | 3.6°C | 286 mm 11.3 in |
| Year | 11.1°C | 4.9°C | 7.9°C | 2,450 mm |
Where Dunoon’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 Dunoon’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 Paisley, 21 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 Dunoon’s climate
How warm does Dunoon get in summer?
July is the warmest month, with average highs of 16.9°C (62°F). About 2 days a year reach 25°C (77°F), fewer than 95% of UK towns.
How cold does Dunoon get in winter?
February nights average 0.8°C (33°F). The air drops below freezing on about 35 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Dunoon get?
About 2,450 mm (96 in) a year, more than almost every UK town. December is the wettest month (286 mm) and May the driest (129 mm).
How sunny is it?
The nearest Met Office station with a sunshine record, Paisley (21 miles away), averages 1,282 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 Dunoon. 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 Dunoon →
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