Climate Overview
The climate in Goroka is warm and mild. The average annual temperature is 18°C and approximately 3917mm 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. December is the warmest month, though highs remain moderate at 24°C with a mean of 19°C. July is the coolest month, with minimum temperatures around 14°C and an average of 18°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 3917mm of precipitation annually, which averages out to around 326mm per month. The wettest month is March, averaging 528mm of rainfall. February and January also tend to see above-average precipitation. The driest month is July, with just 134mm. That's 394mm 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
Goroka 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 July, averaging 1km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, 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 Goroka, which began on June 21, 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 December at around 24°C, while the coldest stretch bottoms out in July near 14°C. Spring is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 14 to 24°C. Rainfall is heavy, totalling around 895mm across the season with a monthly average of 298mm. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 15 to 24°C. Rainfall is heavy, totalling around 1406mm across the season with a monthly average of 469mm. Winds are generally light, averaging 1km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 15 to 23°C. Rainfall is heavy, totalling around 1131mm across the season with a monthly average of 377mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 14 to 23°C. Rainfall is heavy, totalling around 484mm across the season with a monthly average of 161mm. 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 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.
