nomadseason

September Weather in Santiago, Philippines

Last updated: August 27, 2025

In September, the average temperature in Santiago, Philippines is a pleasant 26°C (79°F). Expect a range from a comfortable minimum of 23°C (74°F) to a warm maximum of 30°C (86°F). However, be prepared for some rain, as the area receives an average precipitation of 235 mm (9.3 in) over 25 days. The average humidity hovers around 85%, making it a truly tropical experience!

September Temperature in Santiago

In September in Santiago, the average temperature is 26°C (79°F). Maximums can reach 30°C (86°F), while minimums can dip as low as 23°C (74°F). This mild climate makes it an ideal destination for travelers seeking warm and comfortable conditions.

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

The chart illustrates September temperature patterns in Santiago, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago, September typically has an average temperature of 26°C (79°F), with highs reaching up to 30°C (86°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec777778797979797979797978
Data source: Temperature data for Santiago generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Santiago

In Santiago, in September, the total precipitation amount is 235 mm (9.3 in) spread over 25 days.

September Precipitation Trends in Santiago

The chart displays monthly precipitation patterns in Santiago, 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 Santiago, September typically receives around 235 mm (9.3 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec299201136113201228269200235268175212
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Santiago

In Santiago in September, humidity is 85%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities feel stifling and exhausting for travelers.

September Average Humidity in Santiago

This chart illustrates the average monthly humidity levels in Santiago, 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 Santiago is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%92%91%87%84%83%82%83%85%82%84%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santiago

In Santiago 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 Santiago.

Maximum UV Index Levels in Santiago for September

The chart shows the monthly maximum UV Index (UVI) for Santiago 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 Santiago typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141516161514141515151312
Data source: Santiago 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 Santiago Compares to Other Months

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

This table compares monthly weather conditions in Santiago, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)299 mm (11.8 inches)90%extreme
February Weather25°C (77°F)201 mm (7.9 inches)92%extreme
March Weather25°C (78°F)136 mm (5.4 inches)90%extreme
April Weather26°C (79°F)113 mm (4.4 inches)87%extreme
May Weather26°C (79°F)201 mm (7.9 inches)83%extreme
June Weather26°C (79°F)228 mm (9.0 inches)83%extreme
July Weather26°C (79°F)269 mm (10.6 inches)82%extreme
August Weather26°C (79°F)200 mm (7.9 inches)83%extreme
September Weather26°C (79°F)235 mm (9.3 inches)85%extreme
October Weather26°C (79°F)268 mm (10.5 inches)82%extreme
November Weather26°C (79°F)175 mm (6.9 inches)83%extreme
December Weather26°C (78°F)212 mm (8.3 inches)87%extreme

Compare Santiago's Climate with Cities Worldwide