Climate Overview
The climate in Goroka is temperate. The average annual temperature is 17°C and approximately 3811mm of precipitation falls per year. Goroka receives a notable amount of rainfall throughout the year, including during its driest month. Goroka sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Goroka has relatively stable temperatures year-round, staying within a 10°C range. October is the warmest month, though highs remain moderate at 23°C with a mean of 17°C. August is the coolest month, with minimum temperatures around 13°C and an average of 17°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
Goroka is a very wet location, receiving approximately 3811mm of precipitation annually, which averages out to around 318mm per month. The wettest month is February, averaging 547mm of rainfall. March and January also tend to see above-average precipitation. The driest month is June, with just 118mm. That's 430mm less than February, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.
Wind
Goroka is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 5km/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
89 days until Winter
It is currently autumn in Goroka, which began on March 20, 2026. Goroka sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in October at around 23°C, while the coldest stretch bottoms out in August near 13°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 13 to 23°C. Rainfall is heavy, totalling around 758mm across the season with a monthly average of 253mm. Winds are generally light, averaging 6km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 14 to 23°C. Rainfall is heavy, totalling around 1527mm across the season with a monthly average of 509mm. Winds are generally light, averaging 5km/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 1095mm across the season with a monthly average of 365mm. Winds are generally light, averaging 5km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 13 to 22°C. Rainfall is heavy, totalling around 432mm across the season with a monthly average of 144mm. 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 Goroka 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.
