September Weather in Gunungsitoli, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Gunungsitoli, Indonesia hovers around 27°C (80°F). Expect a minimum of 23°C (75°F) and a maximum of 32°C (90°F), making it a warm destination for travelers. 🌤️ With an average precipitation of 347 mm (13.7 in) spread over 27 days, don’t forget to pack an umbrella! The atmosphere is quite humid, with an average humidity level of 81%, adding to the tropical vibe.

September Temperature in Gunungsitoli

In September in Gunungsitoli, the average temperature is 27°C (80°F), with maximums reaching 32°C (90°F) and minimums dropping as low as 23°C (75°F). This mild and pleasantly warm weather makes it an ideal time for travelers to enjoy outdoor activities and explore the local attractions.

September Weather in Gunungsitoli: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Gunungsitoli, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gunungsitoli, September typically has an average temperature of 27°C (80°F), with highs reaching up to 32°C (90°F) and lows dropping to around 23°C (75°F).

Data source: Temperature data for Gunungsitoli generated using information from the Copernicus Climate Change Service.

September Precipitation in Gunungsitoli

In Gunungsitoli in September, the total precipitation amount is 347 mm (13.7 in) spread over 27 days.

September Precipitation Trends in Gunungsitoli

The chart displays monthly precipitation patterns in Gunungsitoli, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Gunungsitoli, September typically receives around 347 mm (13.7 inches) of precipitation spread over approximately 27 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Gunungsitoli

In Gunungsitoli in September, humidity is 81%. With an average temperature of 27°C (80°F), this humidity feels like a warm blanket wrapping around you, making travel feel sticky and heavy, but the vibrant atmosphere can still be invigorating, inviting moments of exploration in slower, more deliberate steps.

September Average Humidity in Gunungsitoli

This chart illustrates the average monthly humidity levels in Gunungsitoli, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Gunungsitoli is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Gunungsitoli

In Gunungsitoli in September, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Gunungsitoli.

Maximum UV Index Levels in Gunungsitoli for September

The chart shows the monthly maximum UV Index (UVI) for Gunungsitoli in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Gunungsitoli typically reaches 15, which falls under the extreme exposure category.

Data source: Gunungsitoli September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Gunungsitoli Compares to Other Months

Weather in Gunungsitoli varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Gunungsitoli, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Gunungsitoli, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	211 mm (8.3 inches)	77%	extreme
February Weather	27°C (82°F)	230 mm (9.1 inches)	75%	extreme
March Weather	27°C (82°F)	331 mm (13.0 inches)	76%	extreme
April Weather	27°C (81°F)	392 mm (15.4 inches)	74%	extreme
May Weather	28°C (82°F)	333 mm (13.1 inches)	75%	extreme
June Weather	27°C (82°F)	242 mm (9.5 inches)	76%	extreme
July Weather	27°C (81°F)	312 mm (12.3 inches)	74%	extreme
August Weather	27°C (81°F)	301 mm (11.9 inches)	78%	extreme
September Weather	27°C (80°F)	347 mm (13.7 inches)	81%	extreme
October Weather	27°C (80°F)	540 mm (21.3 inches)	84%	extreme
November Weather	26°C (80°F)	525 mm (20.7 inches)	81%	extreme
December Weather	27°C (80°F)	351 mm (13.8 inches)	79%	extreme