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September Weather in Barus, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Barus, Indonesia is a pleasant 25°C (77°F). Expect a minimum of 21°C (71°F) and a maximum of 29°C (85°F), creating ideal conditions for outdoor activities. However, be prepared for some rain, as the region receives about 365 mm (14.4 in) of precipitation over 25 days. The atmosphere can be quite humid, with an average humidity of 87%, adding to the tropical feel of the area.

September Temperature in Barus

In September, in Barus, the average temperature is 25°C (77°F). The maximum can reach 29°C (85°F) and the minimum can be as low as 21°C (71°F). This pleasant climate makes Barus an ideal destination for travelers seeking warmth and comfort during their trip.

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

The chart illustrates September temperature patterns in Barus, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barus, September typically has an average temperature of 25°C (77°F), with highs reaching up to 29°C (85°F) and lows dropping to around 21°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec777777777878777776767677
Data source: Temperature data for Barus generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Barus

In Barus in September, the total precipitation amount is 365 mm (14.4 in) spread over 25 days.

September Precipitation Trends in Barus

The chart displays monthly precipitation patterns in Barus, 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 Barus, September typically receives around 365 mm (14.4 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec279299495397335158251244365379613453
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Barus

In Barus in September, humidity is 87%. With an average temperature of 25°C (77°F), this humidity feels like a thick, warm blanket enveloping you, making travel a challenge as sweat clings to your skin and the air feels heavy and stifling.

September Average Humidity in Barus

This chart illustrates the average monthly humidity levels in Barus, 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 Barus is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%75%79%80%83%84%83%86%87%89%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Barus

In Barus 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 Barus.

Maximum UV Index Levels in Barus for September

The chart shows the monthly maximum UV Index (UVI) for Barus 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 Barus typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141516161513131415151413
Data source: Barus 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 Barus Compares to Other Months

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

This table compares monthly weather conditions in Barus, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)279 mm (11.0 inches)81%extreme
February Weather25°C (78°F)299 mm (11.8 inches)75%extreme
March Weather25°C (78°F)495 mm (19.5 inches)78%extreme
April Weather25°C (78°F)397 mm (15.6 inches)80%extreme
May Weather26°C (78°F)335 mm (13.2 inches)83%extreme
June Weather25°C (78°F)158 mm (6.2 inches)84%extreme
July Weather25°C (77°F)251 mm (9.9 inches)83%extreme
August Weather25°C (77°F)244 mm (9.6 inches)86%extreme
September Weather25°C (77°F)365 mm (14.4 inches)87%extreme
October Weather25°C (77°F)379 mm (14.9 inches)88%extreme
November Weather25°C (76°F)613 mm (24.1 inches)87%extreme
December Weather25°C (77°F)453 mm (17.8 inches)85%extreme

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