Climate Insights for Douglas

The climate in Douglas is warm and mild. The average annual temperature is 20°C and approximately 1061mm of precipitation falls per year. Douglas receives a notable amount of rainfall throughout the year, including during its driest month. Douglas is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to 5°C.

Temperatures in Douglas vary considerably across the year, with a 29°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 34°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 5°C and an average of 11°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.

Douglas is a moderately rainy area, receiving approximately 1061mm of precipitation annually, which averages out to around 88mm per month. The wettest month is August, averaging 125mm of rainfall. July and September also tend to see above-average precipitation. The driest month is November, with just 44mm. That's 81mm less than August, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Douglas is relatively calm, with an average annual wind speed of 10km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/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 11km/h in winter, 11km/h in spring, 8km/h in summer, 10km/h in autumn.

It is currently summer in Douglas, which began on June 21, 2026. Douglas 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 July at around 34°C, while the coldest stretch bottoms out in January near 5°C. Autumn is next, beginning on September 23, 2026 (8 days from now).

The best time to visit Douglas is during March, April, May, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 70mm per month. By contrast, July can be uncomfortably hot with highs reaching 34°C, while January is the coldest period with lows dropping to 5°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Douglas 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. 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.