Climate Overview
The climate in Gili Trawangan is hot. The average annual temperature is 27°C and approximately 1419mm of precipitation falls per year. January is the wettest month, receiving around 286mm of rainfall. Gili Trawangan sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Gili Trawangan has relatively stable temperatures year-round, staying within a 4°C range. The warmest month is May, when average highs reach 29°C and the mean temperature sits around 28°C. August 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 2°C between highs and lows.
Precipitation
Gili Trawangan is a fairly wet location, receiving approximately 1419mm of precipitation annually, which averages out to around 118mm per month. The wettest month is January, averaging 286mm of rainfall. February and December also tend to see above-average precipitation. The driest month is August, with just 15mm. That's 271mm less than January, 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
Gili Trawangan is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 2km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.
Seasons
88 days until Spring
It is currently winter in Gili Trawangan, which began on June 21, 2026. Gili Trawangan 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 29°C, while the coldest stretch bottoms out in August near 25°C. Spring is next, beginning on September 23, 2026 — 88 days from now.
Spring
Temperatures range from 26 to 28°C. Precipitation is moderate at around 202mm for the season, averaging 67mm per month. Winds are generally light, averaging 4km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 781mm across the season with a monthly average of 260mm. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 333mm across the season with a monthly average of 111mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 28°C. Rainfall is relatively light, with around 103mm over the season and a monthly average of 34mm. Winds are generally light, averaging 3km/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 Gili Trawangan 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.
