September Weather in Castanas, Philippines

Last updated: August 27, 2025

In Castanas, Philippines, the average temperature in September hovers around 27°C (81°F). You can expect a minimum of 25°C (77°F) and a maximum of 32°C (90°F). However, be prepared for 320 mm (12.6 in) of precipitation over 26 days, and don't forget to account for the high average humidity of 85%.

September Temperature in Castanas

In September in Castanas, the average temperature is 27°C (81°F). Maximums can reach 32°C (90°F), and minimums can be as low as 25°C (77°F). This warm and pleasant climate makes Castanas an ideal destination for travelers seeking a relaxing getaway.

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

The chart illustrates September temperature patterns in Castanas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castanas, September typically has an average temperature of 27°C (81°F), with highs reaching up to 32°C (90°F) and lows dropping to around 25°C (77°F).

Data source: Temperature data for Castanas generated using information from the Copernicus Climate Change Service.

September Precipitation in Castanas

In Castanas in September, the precipitation amount reaches 320 mm (12.6 in) over the course of 26 days.

September Precipitation Trends in Castanas

The chart displays monthly precipitation patterns in Castanas, 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 Castanas, September typically receives around 320 mm (12.6 inches) of precipitation spread over approximately 26 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Castanas

In Castanas in September humidity is 85%. With an average temperature of 27°C (81°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier as sweat clings to your skin and the air feels almost tangible, which can be quite challenging for traveling.

September Average Humidity in Castanas

This chart illustrates the average monthly humidity levels in Castanas, 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 Castanas is approximately 85%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Castanas

In Castanas 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 Castanas, you can check here.

Maximum UV Index Levels in Castanas for September

The chart shows the monthly maximum UV Index (UVI) for Castanas 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 Castanas typically reaches 14, which falls under the extreme exposure category.

Data source: Castanas 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 Castanas Compares to Other Months

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

This table compares monthly weather conditions in Castanas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (78°F)	109 mm (4.3 inches)	78%	extreme
February Weather	25°C (78°F)	78 mm (3.1 inches)	75%	extreme
March Weather	26°C (80°F)	61 mm (2.4 inches)	74%	extreme
April Weather	27°C (81°F)	62 mm (2.4 inches)	76%	extreme
May Weather	28°C (83°F)	174 mm (6.9 inches)	76%	extreme
June Weather	28°C (83°F)	258 mm (10.2 inches)	81%	extreme
July Weather	27°C (82°F)	360 mm (14.2 inches)	84%	extreme
August Weather	28°C (82°F)	233 mm (9.2 inches)	85%	extreme
September Weather	27°C (81°F)	320 mm (12.6 inches)	85%	extreme
October Weather	27°C (81°F)	326 mm (12.8 inches)	82%	extreme
November Weather	27°C (81°F)	258 mm (10.2 inches)	85%	extreme
December Weather	26°C (79°F)	310 mm (12.2 inches)	86%	very high