Last updated: August 21, 2025
In September, Tomohon, Indonesia, presents a tropical climate characterized by a maximum temperature reaching 32°C (90°F) and an average of 25°C (77°F). The minimum temperature dips to a comfortable 18°C (64°F), offering a pleasant range for both residents and visitors. However, the month is marked by significant precipitation, accumulating 334 mm (13.1 in) over approximately 22 rainy days, contributing to a high humidity level of 80%. This blend of warmth and moisture creates a lush environment, typical of this vibrant region.
In September, Tomohon, Indonesia experiences a subtle yet noticeable shift in weather, with temperatures ranging from a cool 18°C (64°F) at night to a warm 32°C (90°F) during the day. The average temperature remains steady at 25°C (77°F), consistent with earlier months, which creates a pleasant and temperate climate ideal for exploring the lush surroundings. As the region transitions out of the slightly cooler months of August, where minima dropped to 19°C (67°F), September marks the return of warmer daytime highs, highlighting the region's tropical charm. This blend of comfortable evenings and hotter days contributes to September being a delightful time for both visitors and locals to enjoy the vibrant culture and breathtaking scenery of Tomohon.
September in Tomohon, Indonesia, ushers in 334 mm (13.1 in) of precipitation over 22 days, marking a notable resurgence in rainfall after the drier August. This month not only continues the trend of abundant wet weather but also highlights a peak in the annual precipitation cycle, reflecting a shift from the slightly lower figures of summer. Following a series of wet months—especially June, with its impressive 419 mm—September maintains a robust quantity of rainfall, underscoring the region’s lush, verdant landscape. As the rainfall continues to align closely with the earlier months of the year, it sets the stage for the impending atmospheric transitions of the coming months, ensuring that nature remains vibrant and thriving.
September in Tomohon, Indonesia, maintains a comfortable humidity level of 80%, which aligns closely with the average monthly humidity observed throughout the year. This month follows the slightly elevated conditions of August at 82%, indicating a return to more moderate moisture levels. Notably, the humidity peaks earlier in the year, with figures reaching 84% in both February and March before gradually tapering off. Overall, the trend suggests that while humidity fluctuates seasonally, September retains a familiar comfort that echoes the levels experienced in both July and October, reinforcing Tomohon's consistently lush and tropical climate.
In September, Tomohon experiences a UV Index of 15, categorized as extreme, with a brisk burn time of just 10 minutes. This month continues the trend observed throughout the year, where the UV Index consistently hovers between 13 to 17, indicating a significant need for sun protection. As the days transition from the dry season into the wetter months, the solar intensity remains daunting, echoing the extreme conditions seen from January through August. Residents and visitors alike should remain vigilant and proactive about sun safety this September. For more detailed information, visit the Tomohon UV Index.
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In September, Tomohon basks in a delightful 297 hours of sunshine, maintaining a robust brightness that characterizes the region's delightful tropical climate. As the months unfold, there’s a noticeable upward trend, peaking in August with 309 hours of sun, hinting at summer's joyful embrace before leading into September's slightly more moderate, yet still vibrant, sunshine. This slight dip is followed by October's return to brightness, where the sun again shines for 306 hours. Overall, the weather in Tomohon reveals a captivating ebb and flow of sunlight throughout the year, making it a picturesque destination for sun-seekers.
In Tomohon, Indonesia, the likelihood of sunny weather sees a notable dip in September, with only a 10% chance of sunshine. This decline follows a relatively stable summer, where the sun shone brightly 23% of the time in both July and August. The trend reveals that as the year progresses towards the end, particularly during the transition into the rainy season, the chances for clear skies become increasingly limited. Those planning to visit in September should be prepared for overcast conditions and the possibility of rain, as the weather can turn quite variable. In contrast, the preceding months indicate a peak in sunshine, with June standing out at 25%, showcasing a fleeting opportunity for sun-seekers before the cloudier days set in.
In Tomohon, Indonesia, September continues the remarkable trend of consistent daylight that characterizes each month of the year. With a steady 12 hours of daylight, this equatorial city revels in a balanced distribution of light and dark, enabling both residents and visitors to fully enjoy its lush landscapes and vibrant culture. This uniformity not only enhances daily routines but also contributes to the region's agricultural practices, allowing crops to thrive under the reliable sun. As the calendar edges toward the end of the year, the predictability of daylight in September reflects the region's unique geographical stability, fostering an environment where life flourishes all year round.
In September, Tomohon, Indonesia experiences a gentle breeze with an average wind speed of 1.2 m/s (3 mph). This marks a continuation of the lighter winds characteristic of the mid-year months, such as May and June, where wind speeds hovered around similar values. As the seasons transition, September's winds remain modest, reflecting a broader trend of decreasing wind speeds that begins in the late summer. This serene atmospheric condition is a stark contrast to the stronger gusts in December, hitting 2.1 m/s (5 mph), hinting at the dynamic weather patterns that shape the region throughout the year. Overall, September's wind exemplifies the calm before the seasonal shifts, inviting a tranquil experience for locals and visitors alike.
Weather in Tomohon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Tomohon, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of September and January, we see some similarities and slight differences. September typically features a minimum temperature of 18°C (64°F) and reaches an average of 25°C (77°F), with a maximum of 32°C (90°F), while January starts a bit warmer with a minimum of 20°C (69°F), yet maintains the same average of 25°C (77°F) and a maximum temperature of 31°C (88°F). While both months experience high humidity at 80%, September receives more precipitation at 334 mm (13.1 in) over 22 days compared to January's 292 mm (11.5 in) across 23 days. For a more detailed look at January's weather, you can check Tomohon weather in January.
In September, the weather features a slightly broader temperature range, with minimums around 18°C (64°F) and maximums reaching up to 32°C (90°F), while February presents milder minimum temperatures at 20°C (68°F) and similar maximums of 31°C (87°F). Though both months share an average temperature of 25°C (77°F), September experiences significantly higher precipitation at 334 mm (13.1 in) over 22 days compared to February's 251 mm (9.9 in) over 26 days. Moreover, humidity levels are relatively high in both months, with September at 80% and February slightly higher at 84%. For more insights on February weather specifics, visit Tomohon weather in February.
In comparing the weather of September and March, we find that both months exhibit similar average temperatures, with September showing a minimum of 18°C (64°F) and a maximum of 32°C (90°F), while March has slightly higher minimum temperatures at 19°C (67°F) and a maximum of 31°C (88°F). Despite these similarities in temperature, March tends to be slightly wetter, with 323 mm (12.7 in) of precipitation over 29 days, compared to September's 334 mm (13.1 in) spread across 22 days. Humidity levels are also higher in March at 84%, compared to 80% in September. For a detailed look at the weather conditions in March, you can refer to Tomohon weather in March.
In September, the weather tends to be slightly warmer, with minimum temperatures around 18°C (64°F) and maximums reaching up to 32°C (90°F), while April starts off a bit milder with minimum temperatures of 20°C (68°F). Both months share a similar average temperature of around 25°C (78°F) to 25°C (77°F), but September experiences heavier rainfall, with 334 mm (13.1 in) over 22 days compared to April's 322 mm (12.7 in) across 27 days. Humidity levels are quite similar as well, hovering around 80% in September and slightly higher at 82% in April. For more detailed information, you can check Tomohon weather in April.
September and May both feature warm temperatures, but there are some notable differences in their weather patterns. In September, the average temperature is slightly lower at 25°C (77°F), compared to May's average of 26°C (78°F). Both months experience maximum temperatures reaching 32°C (90°F), but September is characterized by higher humidity at 80%, compared to May’s 76%. Additionally, September sees more frequent rainfall, with 334 mm (13.1 in) of precipitation over 22 days, while May has 373 mm (14.7 in) of precipitation spread across 30 days. For a closer look at the weather in Tomohon during May, you can check Tomohon weather in May.
In comparing the weather between September and June, both months feature similar average temperatures of around 25°C (77°F), with September experiencing slightly lower minimum and maximum temperatures (18°C/64°F and 32°C/90°F) compared to June's 20°C (68°F) and 31°C (88°F). However, June sees a higher average precipitation of 419 mm (16.5 in) over 27 days, while September has 334 mm (13.1 in) over 22 days, indicating that June is generally wetter. Both months maintain high humidity levels, with September at 80% and June slightly lower at 78%. For more details on the specific weather patterns during that time, you can visit Tomohon weather in June.
When comparing the weather of September and July, we see some similarities and subtle differences. Both months boast average temperatures around 25°C (77°F), with September experiencing slightly lower minimum temperatures at 18°C (64°F) compared to July's 20°C (69°F). The maximum temperatures are relatively close as well, with September reaching up to 32°C (90°F) and July peaking at 31°C (88°F). Precipitation is quite abundant in both months, with September receiving 334 mm (13.1 in) over 22 days and July slightly more, at 339 mm (13.4 in) over 26 days. Both months maintain a consistent humidity level of 80%, contributing to the tropical feel. For a closer look at July's specific weather patterns, you can explore Tomohon weather in July.
In comparing the weather of September and August, both months exhibit similar average temperatures, hovering around 25°C (77°F). However, September experiences slightly cooler minimum temperatures, averaging 18°C (64°F) compared to August's 19°C (67°F). Precipitation levels rise significantly in September, reaching 334 mm (13.1 in) over 22 days, surpassing August's 228 mm (9.0 in) over 21 days. Additionally, humidity remains relatively high in both months, though September is a touch drier at 80% compared to August's 82%. For more detailed information, check out Tomohon weather in August.
September and October feature similar temperature ranges, with both months exhibiting a minimum temperature of around 18-20°C (64-67°F) and a maximum reaching up to 32°C (90°F). The average temperature remains consistent at approximately 25°C (77°F) for both months. However, when it comes to precipitation, October sees a slight reduction, with 294 mm (11.6 in) over 27 days compared to September's 334 mm (13.1 in) across 22 days. Additionally, humidity levels in October drop slightly to 78% from September's 80%, contributing to a marginally more comfortable climate. For more details on October weather, check out Tomohon weather in October.
In comparing the weather between September and November, we see some interesting similarities and differences. Both months have an average temperature of around 25°C (77°F), yet September tends to be slightly warmer, with maximum temperatures reaching 32°C (90°F) compared to November's peak of 31°C (89°F). Humidity levels remain high in both months, but September is more humid at 80% versus November's 77%. Precipitation is substantial in both months, with September receiving around 334 mm (13.1 in) over 22 days, while November sees slightly less precipitation at 310 mm (12.2 in) over 27 days. For a more detailed look at November's weather specifics, check out Tomohon weather in November.
In September, the weather tends to be warmer, with temperatures ranging from a minimum of 18°C (64°F) to a maximum of 32°C (90°F), and an average of 25°C (77°F). The month experiences significant precipitation, totaling 334 mm (13.1 in) over 22 days, with a humidity level of 80%. Conversely, December offers a slightly more temperate climate, with minimum temperatures at 21°C (70°F) and a maximum of 31°C (89°F), while maintaining a similar average of 25°C (78°F). Precipitation in December is lower, at 295 mm (11.6 in), yet it occurs over 30 days, resulting in a humidity level of 78%. For more details about December weather conditions, visit Tomohon weather in December.
In September, Tomohon's weather showcases a distinct transition, characterized by a remarkable blend of warmth and humidity. With average temperatures hovering around 25°C, the month tends to be warmer than the cooler preceding months, while the likelihood of rain becomes increasingly prominent—evidenced by 22 days of precipitation throughout the month. As the humidity rises to an average of 80%, it contributes to a lush, verdant landscape typical of this season. This rich contrast in weather patterns makes September a unique time to experience Tomohon's vibrant natural beauty. For a deeper dive into the climate specifics, visit Tomohon Climate.