Climate Insights for Douglas

The climate in Douglas is warm and mild. The average annual temperature is 21°C and approximately 951mm of precipitation falls per year. June is the wettest month, receiving around 128mm of rainfall. Douglas is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, November, when temperatures can drop to 4°C.

Temperatures in Douglas vary considerably across the year, with a 32°C difference between the coldest and warmest months. July is the hottest month, with daytime highs reaching 36°C and an average of 30°C. January is the coolest month, with minimum temperatures around 4°C and an average of 9°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 6°C shift in average temperatures.

Douglas is a moderately rainy area, receiving approximately 951mm of precipitation annually, which averages out to around 79mm per month. The wettest month is June, averaging 128mm of rainfall. September and March also tend to see above-average precipitation. The driest month is November, with just 1mm. That's 127mm less than June, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Douglas is relatively calm, with an average annual wind speed of 3km/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 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.

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 36°C, while the coldest stretch bottoms out in January near 4°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.

The best time to visit Douglas is during 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 50mm per month. By contrast, July can be uncomfortably hot with highs reaching 36°C, while January is the coldest period with lows dropping to 4°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

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.