Climate Overview
The climate in Nueva Guinea is hot. The average annual temperature is 25°C and approximately 2104mm of precipitation falls per year. Nueva Guinea receives a notable amount of rainfall throughout the year, including during its driest month. Nueva Guinea is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, September. The coldest months are January, February, March, when temperatures can drop to 22°C.
Temperature
Nueva Guinea has relatively stable temperatures year-round, staying within a 9°C range. The warmest month is May, when average highs reach 31°C and the mean temperature sits around 27°C. January is the coolest month, with minimum temperatures around 22°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.
Precipitation
Nueva Guinea is a very wet location, receiving approximately 2104mm of precipitation annually, which averages out to around 175mm per month. The wettest month is October, averaging 320mm of rainfall. June and September also tend to see above-average precipitation. The driest month is March, with just 51mm. That's 269mm less than October, 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.
Wind
Nueva Guinea 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 February, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/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 13km/h in winter, 11km/h in spring, 9km/h in summer, 8km/h in autumn.
Seasons
87 days until Winter
It is currently autumn in Nueva Guinea, which began on September 23, 2026. Nueva Guinea 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 May at around 31°C, while the coldest stretch bottoms out in January near 22°C. Winter is next, beginning on December 21, 2026 (87 days from now).
Spring
Temperatures range from 22 to 31°C. Rainfall is heavy, totalling around 311mm across the season with a monthly average of 104mm. Winds are generally light, averaging 11km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 23 to 30°C. Rainfall is heavy, totalling around 760mm across the season with a monthly average of 253mm. Winds are generally light, averaging 9km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 22 to 30°C. Rainfall is heavy, totalling around 775mm across the season with a monthly average of 258mm. Winds are generally light, averaging 8km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 22 to 28°C. Precipitation is moderate at around 257mm for the season, averaging 86mm per month. Winds are generally light, averaging 13km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Nueva Guinea is during January and February, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 65mm per month. By contrast, May can be uncomfortably hot with temperatures reaching 31°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Nueva Guinea 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.
