Climate Overview
The climate in Vanimo is hot. The average annual temperature is 27°C and approximately 3657mm of precipitation falls per year. Vanimo receives a notable amount of rainfall throughout the year, including during its driest month. Vanimo sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Vanimo has relatively stable temperatures year-round, staying within a 5°C range. The warmest month is November, when average highs reach 30°C and the mean temperature sits around 27°C. July is the coolest month, with minimum temperatures around 25°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows.
Precipitation
Vanimo is a very wet location, receiving approximately 3657mm of precipitation annually, which averages out to around 305mm per month. The wettest month is December, averaging 383mm of rainfall. March and April also tend to see above-average precipitation. The driest month is September, with just 229mm. That's 154mm less than December, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Vanimo 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 February, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
2 days until Spring
It is currently winter in Vanimo, which began on June 21, 2026. Vanimo 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 30°C, while the coldest stretch bottoms out in July near 25°C. Spring is next, beginning on September 23, 2026 (2 days from now).
Spring
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 826mm across the season with a monthly average of 275mm. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 1047mm across the season with a monthly average of 349mm. Winds are generally light, averaging 6km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 1014mm across the season with a monthly average of 338mm. Winds are generally light, averaging 5km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 769mm across the season with a monthly average of 256mm. Winds are generally light, averaging 5km/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 Vanimo 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.
