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September Weather in Colonia, Micronesia

Last updated: August 28, 2025

In September, the average temperature in Colonia, Micronesia is a pleasant 28°C (82°F), with a minimum of 25°C (78°F) and a maximum reaching 30°C (85°F). Expect a fair amount of rain, with 255 mm (10.0 in) of precipitation spread over 26 days. Humidity levels can be on the higher side, averaging around 80%, making it a warm and often humid month.

September Temperature in Colonia

In September in Colonia, the average temperature is 28°C (82°F), with maximums reaching up to 30°C (85°F) and minimums dropping as low as 25°C (78°F). This pleasant climate makes it an ideal time for travelers seeking warm weather and outdoor adventures.

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

The chart illustrates September temperature patterns in Colonia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Colonia, September typically has an average temperature of 28°C (82°F), with highs reaching up to 30°C (85°F) and lows dropping to around 25°C (78°F).
JanFebMarAprMayJunJulAugSepOctNovDec818181818282818282828282
Data source: Temperature data for Colonia 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 Colonia

In Colonia in September, the total precipitation amount is 255 mm (10.0 in), spread over 26 days.

September Precipitation Trends in Colonia

The chart displays monthly precipitation patterns in Colonia, 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 Colonia, September typically receives around 255 mm (10.0 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec205166175173200293335290255330278339
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Colonia

In Colonia in September, humidity is 80%. With an average temperature of 28°C (82°F), this humidity feels like a warm, thick blanket enveloping you, making outdoor activities sweaty and demanding frequent breaks in the shade while traveling.

September Average Humidity in Colonia

This chart illustrates the average monthly humidity levels in Colonia, 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 Colonia is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%83%84%82%80%78%79%78%80%78%78%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Colonia

In Colonia in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Colonia, you can check here.

Maximum UV Index Levels in Colonia for September

The chart shows the monthly maximum UV Index (UVI) for Colonia 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 Colonia typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121416161413141514141211
Data source: Colonia 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 Colonia Compares to Other Months

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

This table compares monthly weather conditions in Colonia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (81°F)205 mm (8.1 inches)83%extreme
February Weather27°C (81°F)166 mm (6.5 inches)83%extreme
March Weather27°C (81°F)175 mm (6.9 inches)84%extreme
April Weather27°C (82°F)173 mm (6.8 inches)82%extreme
May Weather28°C (82°F)200 mm (7.9 inches)80%extreme
June Weather28°C (82°F)293 mm (11.5 inches)78%extreme
July Weather27°C (82°F)335 mm (13.2 inches)79%extreme
August Weather28°C (82°F)290 mm (11.4 inches)78%extreme
September Weather28°C (82°F)255 mm (10.0 inches)80%extreme
October Weather28°C (82°F)330 mm (13.0 inches)78%extreme
November Weather28°C (82°F)278 mm (11.0 inches)78%extreme
December Weather28°C (82°F)339 mm (13.4 inches)81%extreme

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