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September Weather in Biri, Philippines

Last updated: August 27, 2025

In September, the average temperature in Biri, Philippines hovers around 28°C (82°F), offering a warm and inviting climate. Expect temperatures to range from a comfortable minimum of 25°C (77°F) to a balmy maximum of 31°C (87°F). However, be prepared for some wet days, as precipitation averages 274 mm (10.8 in) over 25 days. The humidity is consistently high at 88%, making for a lush atmosphere.

September Temperature in Biri

In September in Biri, the average temperature is 28°C (82°F). Maximums can reach 31°C (87°F), while minimums can drop to as low as 25°C (77°F). This warm and pleasant climate makes Biri an ideal destination for travelers seeking sunny weather.

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

The chart illustrates September temperature patterns in Biri, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Biri, September typically has an average temperature of 28°C (82°F), with highs reaching up to 31°C (87°F) and lows dropping to around 25°C (77°F).
JanFebMarAprMayJunJulAugSepOctNovDec797879818282828282818180
Data source: Temperature data for Biri 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 Biri

In Biri in September, the precipitation amount is 274 mm (10.8 in) during 25 days, indicating a period of significant rainfall.

September Precipitation Trends in Biri

The chart displays monthly precipitation patterns in Biri, 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 Biri, September typically receives around 274 mm (10.8 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec336191137112128186273234274284280447
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Biri

In Biri in September humidity is 88%. With an average temperature of 28°C (82°F), this humidity feels like walking through a warm, heavy blanket that clings to your skin, making even the simplest activities feel exhausting and necessitating frequent breaks in the shade.

September Average Humidity in Biri

This chart illustrates the average monthly humidity levels in Biri, 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 Biri is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%78%77%79%83%86%87%87%88%85%89%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Biri

In Biri 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 Biri.

Maximum UV Index Levels in Biri for September

The chart shows the monthly maximum UV Index (UVI) for Biri 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 Biri typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121316151414141415131111
Data source: Biri 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 Biri Compares to Other Months

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

This table compares monthly weather conditions in Biri, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)336 mm (13.2 inches)82%extreme
February Weather26°C (79°F)191 mm (7.5 inches)78%extreme
March Weather26°C (80°F)137 mm (5.4 inches)77%extreme
April Weather27°C (81°F)112 mm (4.4 inches)79%extreme
May Weather28°C (82°F)128 mm (5.0 inches)83%extreme
June Weather28°C (82°F)186 mm (7.3 inches)86%extreme
July Weather28°C (82°F)273 mm (10.7 inches)87%extreme
August Weather28°C (82°F)234 mm (9.2 inches)87%extreme
September Weather28°C (82°F)274 mm (10.8 inches)88%extreme
October Weather27°C (81°F)284 mm (11.2 inches)85%extreme
November Weather27°C (81°F)280 mm (11.0 inches)89%extreme
December Weather26°C (80°F)447 mm (17.6 inches)89%extreme

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