Climate Insights for Dunoon

The climate in Dunoon is cool. The average annual temperature is 9°C and approximately 1695mm of precipitation falls per year. Dunoon receives a notable amount of rainfall throughout the year, including during its driest month. Dunoon is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, February, March, when temperatures can drop to 3°C. Light snow can occur between January and December.

Dunoon sees moderate temperature variation throughout the year, ranging from 3°C to 17°C. August is the warmest month, though highs remain moderate at 17°C with a mean of 14°C. January is the coolest month, with minimum temperatures around 3°C and an average of 5°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between April and May, with a 3°C shift in average temperatures.

Dunoon is a fairly wet location, receiving approximately 1695mm of precipitation annually, which averages out to around 141mm per month. The wettest month is December, averaging 189mm of rainfall. October and February also tend to see above-average precipitation. The driest month is April, with just 77mm. That's 112mm less than December, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Light snowfall can occur between January and December, totalling around 39cm annually. February is the snowiest month with approximately 11cm.

Dunoon is moderately windy, with an average annual wind speed of 21km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 25km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in June, with average winds dropping to 18km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 24km/h in winter, 20km/h in spring, 18km/h in summer, 21km/h in autumn.

It is currently spring in Dunoon, which began on March 20, 2026. Dunoon is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 17°C, while the coldest stretch bottoms out in January near 3°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

The table below shows monthly climate averages for Dunoon based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.