Climate Overview
The climate in Wewak is hot. The average annual temperature is 27°C and approximately 3081mm of precipitation falls per year. Wewak receives a notable amount of rainfall throughout the year, including during its driest month. Wewak sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Wewak has relatively stable temperatures year-round, staying within a 4°C range. The warmest month is December, when average highs reach 29°C and the mean temperature sits around 27°C. July is the coolest month, with minimum temperatures around 25°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows.
Precipitation
Wewak is a very wet location, receiving approximately 3081mm of precipitation annually, which averages out to around 257mm per month. The wettest month is April, averaging 302mm of rainfall. November and May also tend to see above-average precipitation. The driest month is August, with just 203mm. That's 99mm less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Wewak is relatively calm, with an average annual wind speed of 12km/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 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 11km/h in winter, 11km/h in spring, 14km/h in summer, 12km/h in autumn.
Seasons
89 days until Winter
It is currently autumn in Wewak, which began on March 20, 2026. Wewak 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 29°C, while the coldest stretch bottoms out in July near 25°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 25 to 29°C. Rainfall is heavy, totalling around 799mm across the season with a monthly average of 266mm. Winds are generally light, averaging 11km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 25 to 29°C. Rainfall is heavy, totalling around 711mm across the season with a monthly average of 237mm. Winds are generally light, averaging 14km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 29°C. Rainfall is heavy, totalling around 840mm across the season with a monthly average of 280mm. Winds are generally light, averaging 12km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 29°C. Rainfall is heavy, totalling around 731mm across the season with a monthly average of 244mm. Winds are generally light, averaging 11km/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 Wewak 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.
