Climate Overview
The climate in Mount Hagen is temperate. The average annual temperature is 17°C and approximately 5314mm 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 9°C range. January is the warmest month, though highs remain moderate at 22°C with a mean of 17°C. July is the coolest month, with minimum temperatures around 13°C and an average of 16°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Mount Hagen is a very wet location, receiving approximately 5314mm of precipitation annually, which averages out to around 443mm per month. The wettest month is March, averaging 667mm of rainfall. January and February also tend to see above-average precipitation. The driest month is July, with just 244mm. That's 423mm 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 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 1km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.
Seasons
93 days until Spring
It is currently winter in Mount Hagen, which began on June 21, 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 January at around 22°C, while the coldest stretch bottoms out in July near 13°C. Spring is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 13 to 22°C. Rainfall is heavy, totalling around 1244mm across the season with a monthly average of 415mm. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 14 to 22°C. Rainfall is heavy, totalling around 1760mm across the season with a monthly average of 587mm. Winds are generally light, averaging 1km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 14 to 22°C. Rainfall is heavy, totalling around 1524mm across the season with a monthly average of 508mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 13 to 21°C. Rainfall is heavy, totalling around 786mm across the season with a monthly average of 262mm. Winds are generally light, averaging 1km/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.
