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September Weather in Siwa, Indonesia

Last updated: August 23, 2025

In September, the average temperature in Siwa, Indonesia reaches a warm 28°C (82°F), with minimums dipping to 24°C (75°F) and maximums peaking at 32°C (90°F). Expect 132 mm (5.2 in) of precipitation spread over 19 days, contributing to an average humidity level of 84%. Get ready for a tropical vibe! 🌦️

September Temperature in Siwa

In September in Siwa, the average temperature is 28°C (82°F). Maximums can reach 32°C (90°F) and minimums can be as low as 24°C (75°F). This warm and pleasant climate makes Siwa an ideal destination for travelers looking to enjoy outdoor activities and relax in the sun.

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

The chart illustrates September temperature patterns in Siwa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siwa, September typically has an average temperature of 28°C (82°F), with highs reaching up to 32°C (90°F) and lows dropping to around 24°C (75°F).
JanFebMarAprMayJunJulAugSepOctNovDec848483838281818182848484
Data source: Temperature data for Siwa 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 Siwa

In Siwa in September, the precipitation amount is 132 mm (5.2 in) over the course of 19 days.

September Precipitation Trends in Siwa

The chart displays monthly precipitation patterns in Siwa, 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 Siwa, September typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec10011119626032234023613313282131105
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Siwa

In Siwa in September humidity is 84%. With an average temperature of 28°C (82°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel sticky and exhausting for traveling.

September Average Humidity in Siwa

This chart illustrates the average monthly humidity levels in Siwa, 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 Siwa 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 Siwa

In Siwa 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 Siwa.

Maximum UV Index Levels in Siwa for September

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

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

This table compares monthly weather conditions in Siwa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather29°C (84°F)100 mm (3.9 inches)86%extreme
February Weather29°C (84°F)111 mm (4.4 inches)88%extreme
March Weather28°C (83°F)196 mm (7.7 inches)89%extreme
April Weather28°C (83°F)260 mm (10.3 inches)88%extreme
May Weather28°C (83°F)322 mm (12.7 inches)86%extreme
June Weather27°C (82°F)339 mm (13.4 inches)88%extreme
July Weather27°C (81°F)236 mm (9.3 inches)90%extreme
August Weather27°C (82°F)133 mm (5.2 inches)90%extreme
September Weather28°C (82°F)132 mm (5.2 inches)84%extreme
October Weather29°C (84°F)82 mm (3.2 inches)83%extreme
November Weather29°C (84°F)131 mm (5.2 inches)83%extreme
December Weather29°C (84°F)104 mm (4.1 inches)85%extreme

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