September Weather in Rantau Prapat, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Rantau Prapat, Indonesia hovers around 27°C (81°F), with a minimum of 23°C (73°F) and a maximum reaching 35°C (95°F). Expect a significant precipitation amount of 286 mm (11.3 in) spread over 28 days, leading to an average humidity of 89%.

September Temperature in Rantau Prapat

In September in Rantau Prapat, the average temperature is 27°C (81°F), with a maximum that can reach 35°C (95°F) and a minimum that can drop to 23°C (73°F). This pleasant weather makes it an ideal time for outdoor activities and sightseeing.

September Weather in Rantau Prapat: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rantau Prapat, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rantau Prapat, September typically has an average temperature of 27°C (81°F), with highs reaching up to 35°C (95°F) and lows dropping to around 23°C (73°F).

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

September Precipitation in Rantau Prapat

In Rantau Prapat in September, the precipitation amount is 286 mm (11.3 in) recorded over a span of 28 days.

September Precipitation Trends in Rantau Prapat

The chart displays monthly precipitation patterns in Rantau Prapat, 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 Rantau Prapat, September typically receives around 286 mm (11.3 inches) of precipitation spread over approximately 28 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Rantau Prapat

In Rantau Prapat in September humidity is 89%. With an average temperature of 27°C (81°F), this humidity feels like a wet blanket enveloping you, making outdoor activities challenging and travel a little less comfortable.

September Average Humidity in Rantau Prapat

This chart illustrates the average monthly humidity levels in Rantau Prapat, 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 Rantau Prapat is approximately 89%, 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 Rantau Prapat

In Rantau Prapat 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 Rantau Prapat.

Maximum UV Index Levels in Rantau Prapat for September

The chart shows the monthly maximum UV Index (UVI) for Rantau Prapat 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 Rantau Prapat typically reaches 15, which falls under the extreme exposure category.

Data source: Rantau Prapat 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 Rantau Prapat Compares to Other Months

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

This table compares monthly weather conditions in Rantau Prapat, 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 (80°F)	189 mm (7.4 inches)	83%	extreme
February Weather	27°C (81°F)	138 mm (5.4 inches)	74%	extreme
March Weather	27°C (82°F)	194 mm (7.6 inches)	74%	extreme
April Weather	28°C (82°F)	262 mm (10.3 inches)	77%	extreme
May Weather	28°C (82°F)	277 mm (10.9 inches)	82%	extreme
June Weather	28°C (82°F)	178 mm (7.0 inches)	85%	extreme
July Weather	28°C (82°F)	141 mm (5.5 inches)	84%	extreme
August Weather	27°C (82°F)	213 mm (8.4 inches)	87%	extreme
September Weather	27°C (81°F)	286 mm (11.3 inches)	89%	extreme
October Weather	27°C (81°F)	273 mm (10.7 inches)	89%	extreme
November Weather	27°C (81°F)	372 mm (14.7 inches)	88%	extreme
December Weather	27°C (80°F)	311 mm (12.2 inches)	88%	extreme