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Gili Trawangan weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Gili Trawangan?
For a warm holiday, the best week has been 20–26 August (Weather Index 97). Favourable start dates for a 7-day trip run from 7 July to 1 September. Every month but February and August is warmest (28°C), August is driest and September and October have the most sun.
- Warmest
- Every month but February and August 28°C
- Coolest
- February and August 27°C
- Driest
- August 15% rain-day chance
- Wettest
- February 91% rain-day chance
- Sunniest
- September and October 12 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Gili Trawangan
Gili Trawangan historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 27.5 | 26.1 | 85.8 | 26.6 | 256.4 | 9.5 |
| February | 27.4 | 26.0 | 91.1 | 25.5 | 237.7 | 9.9 |
| March | 27.8 | 26.3 | 83.9 | 26.0 | 168.2 | 10.2 |
| April | 28.3 | 26.8 | 60.3 | 18.1 | 96.2 | 11.0 |
| May | 28.5 | 26.9 | 37.4 | 11.6 | 48.2 | 11.2 |
| June | 27.9 | 26.3 | 34.0 | 10.2 | 39.4 | 10.9 |
| July | 27.5 | 25.7 | 20.3 | 6.3 | 26.4 | 11.0 |
| August | 27.3 | 25.5 | 14.5 | 4.5 | 13.3 | 11.2 |
| September | 27.6 | 25.9 | 21.0 | 6.3 | 25.9 | 11.7 |
| October | 28.1 | 26.5 | 35.2 | 10.9 | 56.4 | 11.7 |
| November | 28.2 | 26.7 | 71.0 | 21.3 | 131.4 | 10.9 |
| December | 27.9 | 26.4 | 84.5 | 26.2 | 227.5 | 10.0 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.