September Weather in San Fernando, Philippines

Last updated: August 27, 2025

In September, the average temperature in San Fernando, Philippines hovers around 27°C (82°F), with minimums dipping to 25°C (77°F) and maximums reaching 30°C (86°F). Visitors should prepare for a wet month, as precipitation totals around 351 mm (13.8 in) across 25 days, accompanied by a high average humidity of 85%.

September Temperature in San Fernando

In September in San Fernando, the average temperature is 27°C (82°F). Maximums can reach 30°C (86°F), while minimums can drop to as low as 25°C (77°F). Overall, it's a warm and pleasant destination for travel, perfect for enjoying outdoor activities.

September Weather in San Fernando: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Fernando, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Fernando, September typically has an average temperature of 27°C (82°F), with highs reaching up to 30°C (86°F) and lows dropping to around 25°C (77°F).

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

September Precipitation in San Fernando

In San Fernando in September, the total precipitation amount is 351 mm (13.8 in) that occurs over a span of 25 days.

September Precipitation Trends in San Fernando

The chart displays monthly precipitation patterns in San Fernando, 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 San Fernando, September typically receives around 351 mm (13.8 inches) of precipitation spread over approximately 25 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in San Fernando

In San Fernando in September humidity is 85%. With an average temperature of 27°C (82°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit more challenging and encouraging travelers to seek shade and stay hydrated.

September Average Humidity in San Fernando

This chart illustrates the average monthly humidity levels in San Fernando, 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 San Fernando 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 San Fernando

In San Fernando 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 San Fernando.

Maximum UV Index Levels in San Fernando for September

The chart shows the monthly maximum UV Index (UVI) for San Fernando 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 San Fernando typically reaches 15, which falls under the extreme exposure category.

Data source: San Fernando 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 San Fernando Compares to Other Months

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

This table compares monthly weather conditions in San Fernando, 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 (79°F)	212 mm (8.3 inches)	78%	extreme
February Weather	26°C (79°F)	87 mm (3.4 inches)	75%	extreme
March Weather	27°C (80°F)	81 mm (3.2 inches)	74%	extreme
April Weather	27°C (81°F)	57 mm (2.3 inches)	76%	extreme
May Weather	28°C (83°F)	169 mm (6.7 inches)	76%	extreme
June Weather	28°C (82°F)	329 mm (13.0 inches)	81%	extreme
July Weather	27°C (82°F)	475 mm (18.7 inches)	84%	extreme
August Weather	27°C (82°F)	335 mm (13.2 inches)	85%	extreme
September Weather	27°C (82°F)	351 mm (13.8 inches)	85%	extreme
October Weather	27°C (81°F)	404 mm (15.9 inches)	82%	extreme
November Weather	27°C (81°F)	323 mm (12.7 inches)	85%	extreme
December Weather	27°C (81°F)	356 mm (14.0 inches)	86%	extreme