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September Weather in Lamasi, Indonesia

Last updated: August 23, 2025

In Lamasi, Indonesia, the average temperature in September typically hovers around 26°C (78°F). Temperatures can fluctuate between a minimum of 17°C (63°F) and a maximum of 33°C (91°F). Expect precipitation of about 91 mm (3.6 in) spread over 12 days, contributing to an average humidity of 84%—perfect for a lush, vibrant atmosphere!

September Temperature in Lamasi

In September, in Lamasi, the average temperature is 26°C (78°F), with maximums reaching 33°C (91°F) and minimums dipping to as low as 17°C (63°F). This moderate climate makes Lamasi an ideal destination for travelers seeking pleasant weather.

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

The chart illustrates September temperature patterns in Lamasi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lamasi, September typically has an average temperature of 26°C (78°F), with highs reaching up to 33°C (91°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec797979797977777778808080
Data source: Temperature data for Lamasi 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 Lamasi

In Lamasi in September, the precipitation amount is 91 mm (3.6 in) over a period of 12 days.

September Precipitation Trends in Lamasi

The chart displays monthly precipitation patterns in Lamasi, 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 Lamasi, September typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec36038453144725619815813291100232330
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lamasi

In Lamasi in September, humidity is 84%. With an average temperature of 26°C (78°F), this humidity feels like walking through a warm, moist blanket, making outdoor activities feel heavy and exhausting for travelers.

September Average Humidity in Lamasi

This chart illustrates the average monthly humidity levels in Lamasi, 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 Lamasi is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%88%89%88%86%88%90%90%84%83%83%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lamasi

In Lamasi 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 Lamasi.

Maximum UV Index Levels in Lamasi for September

The chart shows the monthly maximum UV Index (UVI) for Lamasi 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 Lamasi typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616151412121415151414
Data source: Lamasi 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 Lamasi Compares to Other Months

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

This table compares monthly weather conditions in Lamasi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)360 mm (14.2 inches)86%extreme
February Weather26°C (79°F)384 mm (15.1 inches)88%extreme
March Weather26°C (79°F)530 mm (20.9 inches)89%extreme
April Weather26°C (79°F)447 mm (17.6 inches)88%extreme
May Weather26°C (79°F)256 mm (10.1 inches)86%extreme
June Weather25°C (78°F)198 mm (7.8 inches)88%extreme
July Weather25°C (77°F)158 mm (6.2 inches)90%extreme
August Weather25°C (78°F)132 mm (5.2 inches)90%extreme
September Weather26°C (78°F)91 mm (3.6 inches)84%extreme
October Weather27°C (80°F)100 mm (3.9 inches)83%extreme
November Weather27°C (81°F)232 mm (9.1 inches)83%extreme
December Weather27°C (80°F)330 mm (13.0 inches)85%extreme

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