Climate Insights for Tarutung

The climate in Tarutung is cold. The average annual temperature is 1°C and approximately 223mm of precipitation falls per year. December is the wettest month, receiving around 33mm of rainfall. Tarutung sits near the equator, so seasonal temperature differences are minimal throughout the year. Snowfall occurs from October to December, with around 93cm accumulating over the season.

Tarutung sees moderate temperature variation throughout the year, ranging from -6°C to 7°C. September is the warmest month, though highs remain moderate at 7°C with a mean of 5°C. The coldest month is December, when overnight lows fall to -6°C and the daily average is -4°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Tarutung is a quite dry location, receiving approximately 223mm of precipitation annually, which averages out to around 19mm per month. The wettest month is April, averaging 33mm of rainfall. May and June also tend to see above-average precipitation. The driest month is August, with just 3mm. That's 30mm less than April, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from October to December, with around 93cm accumulating over the season. November typically sees the most snow at around 33cm.

Tarutung is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 8km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 6km/h in winter, 3km/h in spring, 2km/h in summer, 6km/h in autumn.

It is currently summer in Tarutung, which began on June 21, 2026. Tarutung sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in September at around 7°C, while the coldest stretch bottoms out in December near -6°C. Autumn is next, beginning on September 23, 2026 — 23 days from now.

The table below shows monthly climate averages for Tarutung 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.