Last updated: August 21, 2025
Experience the enchanting weather of Gili Air, Indonesia in September, where temperatures average a balmy 27°C (80°F), with peaks reaching up to 29°C (84°F) and dropping to a comfortable 24°C (76°F) at night. While you enjoy the tropical climate, expect a modest 19 mm (0.8 in) of rain spread over just 4 days, providing a refreshing touch without disrupting your plans. With humidity levels at 71%, the island remains vibrant and lush, making it an ideal time to explore the natural beauty and indulge in the laid-back atmosphere that Gili Air has to offer.
In September, Gili Air continues to bask in pleasant tropical warmth, with temperatures ranging from a comfortable 24°C (76°F) at night to a daytime high of around 29°C (84°F). This month sees a subtle uptick in warmth compared to the previous months, maintaining an inviting average temperature of 27°C (80°F). The nights are refreshing yet warm, making it the perfect time for evening strolls along the beach. As the dry season starts to wane, the days remain bright and sunny, setting the stage for vibrant sunsets that paint the skies in hues of orange and pink – an idyllic backdrop for any vacationer seeking both relaxation and adventure.
As September arrives on Gili Air, Indonesia, a noticeable shift occurs in precipitation patterns. The month typically sees 19 mm (0.8 in) of rainfall, making it one of the driest periods of the year, with rain falling on just 4 days. This change comes after the preceding months of July and August, which recorded minimal precipitation and only a few rainy days, signaling the tail end of the dry season. Despite the slight uptick in October to 26 mm (1.0 in), September’s relatively low rainfall allows visitors to enjoy the island's stunning beaches and vibrant marine life without the frequent interruptions of rain. As the island transitions into a wetter season in November, when rainfall surges to 143 mm (5.6 in) over 19 days, September offers a perfect window for travelers seeking sunny skies and pleasant outdoor adventures.
As September rolls around in Gili Air, Indonesia, the humidity tends to dip, reaching a comfortable 71%. This marks a continuation of the gradual decline from the peak of 84% in February, showcasing a notable trend of decreasing moisture levels as the year progresses. Following a consistent drop through the warmer months, September's humidity is at its lowest since July, suggesting that the island is entering a more pleasant climate phase just before the rains start to pick up in October. For visitors seeking a more comfortable experience, September presents an ideal time to enjoy the island's tropical beauty with slightly less humidity than its earlier months.
In September, Gili Air, Indonesia, continues to bask in intense sunshine with a UV Index of 15, categorizing it as extreme and resulting in a burn time of just 10 minutes. This high UV exposure is consistent with the months preceding September, where indices hovered around the same level—15 in March, April, and October, and even reaching 16 in February. While there is a slight dip in the summer months of June and July, the overall trend indicates that visitors should remain vigilant and take necessary precautions against sunburn throughout the year. For detailed information on the UV safety measures, visit Gili Air UV Index.
UV Risk Categories
As September graces Gili Air, Indonesia, it brings a delightful average of 304 hours of sunshine, adding to the island's allure. Following a summer peak in August with 311 hours, the sun continues to shine brightly in September, promising idyllic days under clear skies. This month fits snugly within a trend of abundant sunlight that has characterized mid-year, with hours consistently above the 300-hour mark since May. The approach of October, with its anticipated 320 hours, hints at an even brighter outlook, ensuring that Gili Air remains a radiant paradise for sun-seekers and nature lovers alike.
As September approaches in Gili Air, Indonesia, the likelihood of sunny weather shows a noticeable dip from the peak summer months. While the chance of sun in September stands at 44%, it reflects a significant drop from the highs of July and August, which boast sun chances of 63% and 53%, respectively. This month serves as a transitional period, hinting at the approaching rainy season, yet still offers a fair number of clear days for sun-seekers. With both April and May also capturing 51% sunlight, September’s weather is a pleasant balance of sun and shade, ensuring that visitors can still enjoy the island’s natural beauty amidst the changing patterns. As the weather starts its shift, travelers can look forward to enjoying the warm tropical days before the clouds roll in.
In Gili Air, Indonesia, September marks a transition back to longer days, boasting a delightful 12 hours of daylight. This month, along with January, February, October, November, and December, showcases the island's equatorial nature, where daylight remains consistently abundant. As the dry season wanes, September stands out with the return of brighter mornings and longer evenings, inviting visitors to revel in outdoor adventures or serene sunset views. The preceding months, from April to August, saw 11 hours of daylight, hinting at nature's rhythmic dance. As the days lengthen again, the island beckons travelers to bask in its beauty under the sun-soaked skies.
As September rolls into Gili Air, the island experiences a delightful consistency in wind patterns, with average speeds peaking at 4.4 m/s (10 mph), matching the gusts of the previous month. This moderate wind adds a refreshing touch to the tropical atmosphere, ideal for sailing and water sports enthusiasts. Following a gradual uptick from early summer, September stands as a bridge between the lively winds of August and the even stronger breezes that October promises, which can reach 6.0 m/s (13 mph). This trend highlights the island's dynamic climate, inviting both relaxation and adventure as the seasons shift. Overall, the September winds create a perfect backdrop for enjoying the serene beauty of this Indonesian paradise.
Weather in Gili Air varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Gili Air, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January showcase a somewhat similar temperature range, with both months experiencing average highs of around 27°C (80°F) and maximum temperatures peaking at 29°C (84°F) in September and 29°C (85°F) in January. However, January is marked by significantly increased precipitation, totaling 255 mm (10.1 in) over 23 days, compared to a much drier September with just 19 mm (0.8 in) over 4 days. Additionally, January features slightly higher humidity levels at 78%, compared to 71% in September. The contrast between these two months highlights the wetter and more humid conditions of January, which you can explore further in detail at Gili Air weather in January.
September and February present similar temperature ranges, with both months averaging around 27°C (80°F) and only slight variations in minimum and maximum temperatures. However, February stands out significantly in terms of precipitation, receiving 255 mm (10.0 in) across 26 days, compared to September's much drier 19 mm (0.8 in) over just 4 days. This results in February having a higher humidity level of 84%, as opposed to September's 71%. For more detailed information on February's weather, you can check Gili Air weather in February.
In comparing the weather of September and March, both months exhibit similar average temperatures, with September ranging from a minimum of 24°C to a maximum of 29°C (76°F to 84°F) and March slightly warmer with a minimum of 25°C and the same maximum. However, March sees a significant increase in precipitation, totaling 182 mm (7.2 in) over 27 days compared to just 19 mm (0.8 in) over 4 days in September. Additionally, humidity is higher in March at 82%, compared to 71% in September, making the latter a more comfortable but drier month overall. For more detailed information, you can check Gili Air weather in March.
The weather in September features warmer temperatures, with minimums around 24°C (76°F) and averaging 27°C (80°F), while April offers slightly higher temperatures, with a minimum of 25°C (78°F) and an average of 28°C (82°F). However, September is much drier, experiencing only 19 mm (0.8 in) of precipitation over 4 days compared to April's significant rainfall of 123 mm (4.8 in) spread across 20 days. Additionally, April has a higher humidity level at 80%, compared to September's 71%. For a detailed look at what to expect, you can check Gili Air weather in April.
When comparing the weather in September and May, September tends to be slightly milder, with average temperatures ranging from a minimum of 24°C (76°F) to a maximum of 29°C (84°F). In contrast, May sees warmer temperatures, with a minimum of 26°C (79°F) and a maximum of 30°C (86°F). Moreover, May experiences more precipitation, averaging 37 mm (1.5 in) over 10 days, compared to September's 19 mm (0.8 in) over just 4 days. Additionally, humidity levels are higher in May at 79%, compared to 71% in September. For a detailed look at the weather during this month, check out Gili Air weather in May.
In comparing the weather of September and June, both months feature similar average temperatures, hovering around 27°C (81°F), with maximums reaching 29°C (84°F). However, September tends to be slightly drier, with only 19 mm (0.8 in) of precipitation over 4 days, compared to June’s 42 mm (1.7 in) across 11 days. This results in lower humidity levels in September at 71%, versus a higher 76% in June, making the former feel a bit more comfortable. For more detailed weather information specific to June, you can check Gili Air weather in June.
In July, the weather features a slightly lower average temperature of 26°C (80°F) compared to September's average of 27°C (80°F), while both months experience similar maximum temperatures of 29°C (84°F). Interestingly, the minimum temperature remains consistent at 24°C (76°F) for both months. Precipitation levels are quite comparable, with July receiving 18 mm (0.7 in) over 4 days and September seeing a slight increase to 19 mm (0.8 in) also on 4 days. Humidity is marginally higher in September at 71%, compared to 73% in July. For more detailed insights on July weather, you can check Gili Air weather in July.
In September, temperatures remain warm with a minimum of 24°C (76°F), an average of 27°C (80°F), and a maximum of 29°C (84°F), slightly higher than August's range, which saw a minimum of 24°C (75°F), an average of 26°C (79°F), and a maximum of 28°C (83°F). September also experiences a bit more rainfall with 19 mm (0.8 in) over 4 days, compared to August's 14 mm (0.6 in) over only 3 days. Humidity levels are similar, slightly dropping from 72% in August to 71% in September. For those interested in the August conditions, further details can be found in Gili Air weather in August.
In September, the weather typically features a minimum temperature of 24°C (76°F) and an average of 27°C (80°F), with a maximum reaching 29°C (84°F). With only 19 mm (0.8 in) of precipitation occurring over about four days and humidity at 71%, September offers a warm and relatively dry climate.
In contrast, October sees a slight increase in minimum temperature to 25°C (77°F), while maintaining an average of 27°C (81°F) and a maximum of 29°C (85°F). However, the month is marked by increased precipitation, totaling 26 mm (1.0 in) over seven days, and slightly lower humidity at 69%. This shift indicates a transition to a wetter season. For more information, you can check the detailed Gili Air weather in October.
In September, the weather is warm and relatively dry, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 29°C (84°F) and average humidity around 71%. The month experiences limited rainfall, totaling just 19 mm (0.8 in) over about 4 days. In contrast, November brings slightly higher minimum and maximum temperatures, ranging from 25°C (78°F) to 30°C (85°F), but sees a significant increase in precipitation, with 143 mm (5.6 in) falling over 19 days. The humidity remains comparable at 69%, but the substantial rainfall in November creates a more humid environment. For more details on November's weather, you can visit Gili Air weather in November.
September and December in Gili Air showcase mildly similar average temperatures, with September averaging 27°C (80°F) and December at 27°C (81°F). However, December is characterized by a slight rise in both minimum and maximum temperatures, with a minimum of 25°C (78°F) and a maximum of 30°C (86°F). The contrast between the two months is stark when it comes to precipitation; September experiences only 19 mm (0.8 in) over 4 days, while December sees a significant increase with 213 mm (8.4 in) spread across 27 rainy days. Both months have comparable humidity levels, hovering around 71-72%. For a detailed look at December weather, visit Gili Air weather in December.
As you soak in the beauty of Gili Air in September, you'll find a delightful blend of warmth and moderate humidity, making it a comfortable oasis. With temperatures hovering around a pleasant 27°C (80°F), it's an ideal escape from the heat found in other months. While rainfall is minimal, the occasional shower adds to the island's charm without disrupting your sun-soaked adventures. With an average humidity of 71%, September offers a refreshing atmosphere that encourages exploration and relaxation alike. For a deeper dive into the weather specifics throughout the year, check out Gili Air Climate.