Climate Overview
The climate in Mataram is hot. The average annual temperature is 27°C and approximately 1533mm of precipitation falls per year. December is the wettest month, receiving around 264mm of rainfall. Mataram sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Mataram has relatively stable temperatures year-round, staying within a 6°C range. The warmest month is May, when average highs reach 30°C and the mean temperature sits around 28°C. August is the coolest month, with minimum temperatures around 24°C and an average of 26°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows.
Precipitation
Mataram is a fairly wet location, receiving approximately 1533mm of precipitation annually, which averages out to around 128mm per month. The wettest month is December, averaging 264mm of rainfall. January and February also tend to see above-average precipitation. The driest month is August, with just 13mm. That's 252mm less than December, 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.
Wind
Mataram is relatively calm, with an average annual wind speed of 10km/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 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 12km/h in winter, 11km/h in spring, 8km/h in summer, 8km/h in autumn.
Seasons
3 days until Spring
It is currently winter in Mataram, which began on June 21, 2026. Mataram sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in May at around 30°C, while the coldest stretch bottoms out in August near 24°C. Spring is next, beginning on September 23, 2026 (3 days from now).
Spring
Temperatures range from 25 to 30°C. Rainfall is heavy, totalling around 349mm across the season with a monthly average of 116mm. Winds are generally light, averaging 11km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 730mm across the season with a monthly average of 243mm. Winds are generally light, averaging 8km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 30°C. Rainfall is heavy, totalling around 383mm across the season with a monthly average of 128mm. Winds are generally light, averaging 8km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 24 to 29°C. Rainfall is relatively light, with around 72mm over the season and a monthly average of 24mm. Winds are generally light, averaging 12km/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 Mataram 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.
