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September Weather in San Mariano, Philippines

Last updated: August 27, 2025

In San Mariano, Philippines, the average temperature in September hovers around a warm 27°C (81°F). Expect a minimum of 23°C (74°F) and soaring highs of 33°C (92°F). With 362 mm (14.2 in) of precipitation spread across 25 days, be prepared for some wet weather. The air is also quite humid, with an average humidity of 85%, making it feel even warmer.

September Temperature in San Mariano

In September in San Mariano, the average temperature is a warm 27°C (81°F). The maximum can reach a hot 33°C (92°F), while the minimum can drop to a comfortable 23°C (74°F). This makes San Mariano an ideal destination for travelers seeking pleasant weather and outdoor adventures.

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

The chart illustrates September temperature patterns in San Mariano, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Mariano, September typically has an average temperature of 27°C (81°F), with highs reaching up to 33°C (92°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec777779808282818181807978
Data source: Temperature data for San Mariano 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 San Mariano

In San Mariano in September, the total precipitation amount is 362 mm (14.2 in) spread over 25 days.

September Precipitation Trends in San Mariano

The chart displays monthly precipitation patterns in San Mariano, 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 Mariano, September typically receives around 362 mm (14.2 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec25116410882190226380294362345263471
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Mariano

In San Mariano 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 San Mariano

This chart illustrates the average monthly humidity levels in San Mariano, 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 Mariano is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%75%74%76%76%81%84%85%86%82%85%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Mariano

In San Mariano 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 Mariano.

Maximum UV Index Levels in San Mariano for September

The chart shows the monthly maximum UV Index (UVI) for San Mariano 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 Mariano typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121315161414141515141111
Data source: San Mariano 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 Mariano Compares to Other Months

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

This table compares monthly weather conditions in San Mariano, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)251 mm (9.9 inches)78%extreme
February Weather25°C (77°F)164 mm (6.5 inches)75%extreme
March Weather26°C (79°F)108 mm (4.3 inches)74%extreme
April Weather27°C (81°F)82 mm (3.2 inches)76%extreme
May Weather28°C (82°F)190 mm (7.5 inches)76%extreme
June Weather28°C (82°F)226 mm (8.9 inches)81%extreme
July Weather27°C (81°F)380 mm (15.0 inches)84%extreme
August Weather27°C (82°F)294 mm (11.6 inches)85%extreme
September Weather27°C (81°F)362 mm (14.2 inches)85%extreme
October Weather27°C (80°F)345 mm (13.6 inches)82%extreme
November Weather26°C (80°F)263 mm (10.3 inches)85%extreme
December Weather26°C (78°F)471 mm (18.5 inches)86%extreme

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