Last updated: August 21, 2025
September in Gili Trawangan, Indonesia offers a delightful tropical climate, with maximum temperatures reaching 29°C (84°F) and an average of 27°C (80°F). As the month progresses, visitors can expect comfortable minimum temperatures around 24°C (76°F), perfect for beach activities and excursions. While rainfall is relatively minimal at just 19 mm (0.8 in) over about 4 days, the humidity hovers at a warm 71%, creating a lush and vibrant atmosphere. Overall, September presents an ideal time to explore the island's stunning landscapes and enjoy its renowned hospitality.
In September, Gili Trawangan enjoys delightful temperatures that perfectly embody the island's tropical charm. With minimums around 24°C (76°F) and averages reaching 27°C (80°F), it's a comfortable time for both relaxation and adventure. The maximum temperatures hover around 29°C (84°F), providing ample warmth for sunbathing or exploring the vibrant marine life. Notably, September marks a transition toward slightly cooler conditions compared to the peak heat of the previous months, making it an ideal choice for travelers looking to enjoy the beauty of this stunning destination without the intense summer heat.
As September unfolds in Gili Trawangan, the island experiences a slight uptick in precipitation, with 19 mm (0.8 in) of rain recorded over four days. This marks a gentle increase from the drier months of July and August, where rainfall was at a mere 18 mm (0.7 in) and 14 mm (0.6 in), respectively. While still one of the lighter months in terms of precipitation, September hints at the transitional shift towards the wetter season, which will peak in the following months. With this modest rainfall, the island retains its tropical charm, allowing visitors to enjoy the stunning landscapes even as they prepare for the rainier days ahead.
As September unfolds in Gili Trawangan, Indonesia, humidity levels dip to a comfortable 71%, marking a continuation of the gradual decline seen from the peak months earlier in the year. After experiencing a humid high of 84% in February, the environment becomes increasingly inviting, as the island transitions towards October's even drier 69%. This downward trend is a welcome change for visitors looking to enjoy the stunning beaches and lush landscapes with less muggy air. Interestingly, this pattern highlights how the island transforms through the year, with humidity peaking in early months before settling into a more refreshing atmosphere as September arrives.
As the sun sets in September on the stunning shores of Gili Trawangan, residents and visitors alike must brace for an extreme UV Index of 15, matching the intensity seen throughout the year. While maintaining a consistent burn time of just 10 minutes, this month echoes the pattern established from January through August, characterized by dangerously high UV levels. The trend showcases a resilient climate that demands respect for sun safety and protective measures. With these extremes persisting, it's wise to stay informed and take precautions during your island adventures. For more details and tips on sun safety, check out the detailed Gili Trawangan UV Index.
UV Risk Categories
As September rolls in on the idyllic shores of Gili Trawangan, Indonesia, the island basks in an impressive 304 hours of sunshine, positioning it as a sun-kissed paradise for beach lovers. This month showcases a delightful trend, with sunshine hours steadily glowing through the year, peaking in the vibrant summer months of July and August, which boast around 308 to 311 hours. September remains robust, slightly dipping yet retaining a wealth of sunshine, making it an ideal time for travelers to soak in the last warm rays before autumn settles in. As October approaches, the island further shines with an anticipated leap to 320 hours, promising an autumn full of golden days and spectacular sunsets.
In Gili Trawangan, the chance of sunny weather sees a notable shift as the year progresses. While January and February offer a modest 5% and 7% likelihood of sunshine, by the time we reach April and May, the sunshine chance significantly increases to 51%. This trend continues to rise, peaking in July at a promising 63%. As summer transitions into autumn, September still holds a respectable 44% chance of sunny days, making it a delightful time for visitors. However, as October approaches, the likelihood of sunshine drops to 39%, signaling the onset of the rainy season. Overall, while September may not boast the highest percentage, it remains a solid choice for those seeking warmth and sunshine amid the island's beauty.
As September rolls into Gili Trawangan, the island enjoys 12 hours of daylight, marking a return to the longer days typical of the earlier months. This month not only signals a transition from the shorter days of the rainy season but also sets the stage for the more consistent sunlight that extends into October and November. From April to August, daylight dips to a stable 11 hours, creating a rhythm that highlights the tropical climate's unique character. With September's daylight extending once again, visitors can bask in the beautiful balance of sunshine and warmth, perfect for all their island adventures.
As September unfolds in Gili Trawangan, the island basks in the joy of steady winds, with an average speed of 4.4 m/s (10 mph), mirroring the breezy conditions of August. This consistency signifies a transition into the more robust gusts that October promises, marking a shift in the seasonal rhythm of the region. Remarkably, the wind speed begins its ascent from the gentler breezes of early summer, peaking in August and September before ramping up to 6.0 m/s (13 mph) in October. The blend of refreshing winds invites water sports enthusiasts and beachgoers alike, making September an ideal time to embrace the vibrant outdoor lifestyle of this stunning locale.
Weather in Gili Trawangan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Gili Trawangan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, Gili Trawangan enjoys warm temperatures with an average of 27°C (80°F) and relatively low humidity at 71%. The month experiences minimal rainfall, accumulating just 19 mm over about four days, making it an appealing time for outdoor activities. In contrast, January sees similar average temperatures but with higher humidity levels at 78%. However, this month is significantly wetter, with total rainfall reaching 255 mm over 23 days, contributing to a more lush landscape. This shift in weather patterns highlights the transition from a drier to a wetter season. For more detailed information, check the Gili Trawangan weather in January.
In September, the weather exhibits a warm yet relatively dry climate, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 29°C (84°F) and only 19 mm of precipitation over about four days. Conversely, February experiences similar average temperatures but significantly higher rainfall, totaling 255 mm (10.0 in) over 26 days, leading to increased humidity levels of 84%. For a detailed look at February's conditions, you can visit Gili Trawangan weather in February.
In September, the weather typically features warm temperatures with a minimum of 24°C (76°F), averaging around 27°C (80°F) and reaching a maximum of 29°C (84°F). The month sees relatively low precipitation at 19 mm (0.8 in) over just 4 days, and humidity levels are at a comfortable 71%. In contrast, March presents similar temperatures, but with slightly higher minimum and average temps, recording a minimum of 25°C (77°F) and an average of 27°C (81°F). However, March is considerably wetter, with precipitation soaring to 182 mm (7.2 in) spread over 27 days, leading to increased humidity at 82%. This stark difference in precipitation highlights how much wetter March is compared to September. For more detailed information, check out Gili Trawangan weather in March.
In comparing the weather of September and April, September offers relatively mild conditions with average temperatures ranging from 24°C (76°F) to a maximum of 29°C (84°F) and low precipitation of only 19 mm (0.8 in) over four days, keeping humidity at 71%. In contrast, April presents warmer temperatures, with a minimum of 25°C (78°F) and an average of 28°C (82°F), peaking at 30°C (85°F). However, it also experiences significantly higher rainfall, totaling 123 mm (4.8 in) across 20 days, contributing to a higher humidity level of 80%. For more detailed information, you can visit Gili Trawangan weather in April.
September and May present distinct weather patterns. In September, temperatures range from a minimum of 24°C (76°F) to a maximum of 29°C (84°F), with an average of 27°C (80°F). The month is relatively dry, with only 19 mm (0.8 in) of precipitation spread over 4 days and humidity levels at 71%. In contrast, May tends to be slightly warmer, with temperatures ranging from a minimum of 26°C (79°F) to a maximum of 30°C (86°F) and an average of 28°C (82°F). May also experiences higher rainfall, accumulating 37 mm (1.5 in) over 10 days, coupled with increased humidity at 79%. For a more detailed look at May weather, you can check Gili Trawangan weather in May.
When comparing the weather in September and June, both months share similar average high temperatures around 29°C (84°F) and minimums slightly differing, with June being just a degree warmer at 25°C (77°F) compared to September's 24°C (76°F). However, June experiences considerably more precipitation, with 42 mm (1.7 in) over 11 days, while September sees only 19 mm (0.8 in) over just 4 days, resulting in drier conditions. Humidity levels are also slightly higher in June at 76%, compared to 71% in September. For a closer look at June's weather specifics, you can check Gili Trawangan weather in June.
In comparing the weather of September and July, both months exhibit similar temperature ranges, with July having an average temperature of 26°C (80°F) and September slightly warmer at 27°C (80°F). The minimum and maximum temperatures remain constant at 24°C (76°F) and 29°C (84°F), respectively, for both months. Precipitation levels are also quite comparable, with July seeing 18 mm (0.7 in) over four days and September experiencing a marginally higher 19 mm (0.8 in) with the same number of rainy days. Humidity levels are slightly higher in September at 71%, compared to 73% in July. For more detailed insights, check out the Gili Trawangan weather in July.
In comparing the weather between September and August, both months exhibit warm temperatures, with September slightly warmer on average. September sees a minimum of 24°C (76°F), an average of 27°C (80°F), and a maximum of 29°C (84°F), while August maintains a similar range with a minimum of 24°C (75°F), an average of 26°C (79°F), and a maximum of 28°C (83°F). Precipitation in September increases to 19 mm (0.8 in) over 4 days, whereas August experiences less rainfall at 14 mm (0.6 in) over just 3 days. Humidity levels remain comparable, with September at 71% and August slightly higher at 72%. For more detailed weather insights, you can explore Gili Trawangan weather in August.
In September, the weather is marked by warm temperatures, with a minimum of 24°C (76°F) and an average of 27°C (80°F), while the maximum reaches 29°C (84°F). The month experiences relatively low precipitation, totaling 19 mm (0.8 in) across just 4 days, combined with a humidity level of 71%.
As October arrives, temperatures remain similar, with a minimum of 25°C (77°F) and an average that slightly increases to 27°C (81°F), peaking at 29°C (85°F). However, rainfall becomes more frequent, with 26 mm (1.0 in) of precipitation occurring over 7 days, and humidity decreases slightly to 69%. For more details on how the weather evolves during this month, check out Gili Trawangan weather in October.
In comparing the weather of September and November, we can observe some notable differences. September typically enjoys a warmer feel, with average temperatures around 27°C (80°F), while November remains slightly cooler with an average of 27°C (82°F), though it peaks a bit higher at 30°C (85°F). Precipitation levels rise dramatically in November to 143 mm (5.6 in), occurring over 19 days, compared to the much drier September, which sees only 19 mm (0.8 in) over just 4 days. Humidity levels remain relatively similar, with September at 71% and November at 69%. For a more detailed look at November weather, check out Gili Trawangan weather in November.
September weather features warm temperatures, with a minimum of 24°C (76°F) and an average of 27°C (80°F), accompanied by relatively low precipitation of just 19 mm (0.8 in) over 4 days. In contrast, December experiences slightly higher temperatures, with a minimum of 25°C (78°F) and a maximum of 30°C (86°F), but significantly more rainfall, totaling 213 mm (8.4 in) across 27 days. The humidity remains fairly consistent, at around 71% in September and 72% in December, indicating a tropical climate throughout both months. For a more detailed look at December conditions, check out Gili Trawangan weather in December.
September in Gili Trawangan brings a delightful transition as the island welcomes the tail end of the dry season. With temperatures averaging a pleasant 27°C (80°F), it's a perfect time to enjoy outdoor activities without the intense heat of peak summer months. Humidity remains manageable at 71%, creating comfortable conditions for exploration. Although you might encounter some occasional rain, with just about 19 mm falling over four days, these brief showers often give way to brilliant sunshine. This makes September an ideal month for travelers seeking favorable weather and fewer crowds. For a deeper dive into what to expect throughout the year, check out Gili Trawangan Climate.