Climate Insights for Dumbéa

The climate in Dumbéa is warm and mild. The average annual temperature is 21°C and approximately 1680mm of precipitation falls per year. Dumbéa receives a notable amount of rainfall throughout the year, including during its driest month. Dumbéa is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: February, January, March. The coldest months are August, July, September, when temperatures can drop to 15°C.

Dumbéa sees moderate temperature variation throughout the year, ranging from 15°C to 28°C. The warmest month is February, when average highs reach 28°C and the mean temperature sits around 25°C. August is the coolest month, with minimum temperatures around 15°C and an average of 18°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.

Dumbéa is a fairly wet location, receiving approximately 1680mm of precipitation annually, which averages out to around 140mm per month. The wettest month is March, averaging 280mm of rainfall. February and April also tend to see above-average precipitation. The driest month is September, with just 46mm. That's 234mm less than March, 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.

Dumbéa 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 August, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently winter in Dumbéa, which began on June 21, 2026. Dumbéa is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in February at around 28°C, while the coldest stretch bottoms out in August near 15°C. Spring is next, beginning on September 23, 2026 — 93 days from now.

The best time to visit Dumbéa is during June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 71mm per month. By contrast, February can be uncomfortably hot with temperatures reaching 28°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 Dumbéa 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.