Climate Insights for Nueva Guinea

The climate in Nueva Guinea is hot. The average annual temperature is 25°C and approximately 1995mm 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 February, January, March, when temperatures can drop to 22°C.

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. February 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.

Nueva Guinea is a fairly wet location, receiving approximately 1995mm of precipitation annually, which averages out to around 166mm per month. The wettest month is October, averaging 304mm of rainfall. June and September also tend to see above-average precipitation. The driest month is February, with just 43mm. That's 261mm 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.

Nueva Guinea is mildly breezy, with an average annual wind speed of 15km/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 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 11km/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 17km/h in winter, 15km/h in spring, 14km/h in summer, 12km/h in autumn.

It is currently spring in Nueva Guinea, which began on March 20, 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 February near 22°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

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 54mm 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.

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.