Climate Overview
The climate in Mount Hagen is temperate. The average annual temperature is 16°C and approximately 5452mm of precipitation falls per year. Mount Hagen receives a notable amount of rainfall throughout the year, including during its driest month. Mount Hagen sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Mount Hagen has relatively stable temperatures year-round, staying within a 10°C range. November is the warmest month, though highs remain moderate at 22°C with a mean of 17°C. August is the coolest month, with minimum temperatures around 12°C and an average of 16°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.
Precipitation
Mount Hagen is a very wet location, receiving approximately 5452mm of precipitation annually, which averages out to around 454mm per month. The wettest month is March, averaging 683mm of rainfall. January and February also tend to see above-average precipitation. The driest month is July, with just 247mm. That's 436mm less than March, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.
Wind
Mount Hagen is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 6km/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.
Seasons
90 days until Winter
It is currently autumn in Mount Hagen, which began on March 20, 2026. Mount Hagen sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in November at around 22°C, while the coldest stretch bottoms out in August near 12°C. Winter is next, beginning on June 21, 2026 — 90 days from now.
Spring
Temperatures range from 12 to 22°C. Rainfall is heavy, totalling around 1193mm across the season with a monthly average of 398mm. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 13 to 22°C. Rainfall is heavy, totalling around 1805mm across the season with a monthly average of 602mm. Winds are generally light, averaging 7km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 13 to 22°C. Rainfall is heavy, totalling around 1675mm across the season with a monthly average of 558mm. Winds are generally light, averaging 6km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 12 to 21°C. Rainfall is heavy, totalling around 779mm across the season with a monthly average of 260mm. Winds are generally light, averaging 6km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Mount Hagen 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.
