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September Weather in San Rafael, Philippines

Last updated: August 27, 2025

In September, the average temperature in San Rafael, Philippines is a warm 27°C (80°F). Expect a minimum of 22°C (72°F) and a maximum of 34°C (93°F). However, prepare for significant rainfall, with an average precipitation of 358 mm (14.1 in) spread over 28 days, and high humidity levels averaging 89%.

September Temperature in San Rafael

In September in San Rafael, the average temperature is 27°C (80°F). Maximums can reach 34°C (93°F), while minimums can drop as low as 22°C (72°F). This pleasant climate makes San Rafael an ideal destination for travelers seeking warmth and sunshine during this time.

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

The chart illustrates September temperature patterns in San Rafael, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Rafael, September typically has an average temperature of 27°C (80°F), with highs reaching up to 34°C (93°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec767678808282808080797977
Data source: Temperature data for San Rafael 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 Rafael

In San Rafael in September, the precipitation amount is 358 mm (14.1 in) over a span of 28 days.

September Precipitation Trends in San Rafael

The chart displays monthly precipitation patterns in San Rafael, 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 Rafael, September typically receives around 358 mm (14.1 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec158795053190266399338358297232312
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Rafael

In San Rafael in September humidity is 89%. With an average temperature of 27°C (80°F), this humidity feels like a warm, sticky embrace, making travel feel heavy and reminiscent of a sauna, where even the slightest exertion can leave you feeling drenched and yearning for a cool breeze.

September Average Humidity in San Rafael

This chart illustrates the average monthly humidity levels in San Rafael, 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 Rafael is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%71%69%69%76%87%89%89%89%86%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Rafael

In San Rafael 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 San Rafael, you can check here.

Maximum UV Index Levels in San Rafael for September

The chart shows the monthly maximum UV Index (UVI) for San Rafael 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 Rafael typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111315151314141514131110
Data source: San Rafael 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 Rafael Compares to Other Months

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

This table compares monthly weather conditions in San Rafael, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)158 mm (6.2 inches)76%extreme
February Weather24°C (76°F)79 mm (3.1 inches)71%extreme
March Weather26°C (78°F)50 mm (2.0 inches)68%extreme
April Weather27°C (80°F)53 mm (2.1 inches)69%extreme
May Weather28°C (82°F)190 mm (7.5 inches)76%extreme
June Weather28°C (82°F)265 mm (10.5 inches)87%extreme
July Weather27°C (80°F)399 mm (15.7 inches)88%extreme
August Weather27°C (81°F)338 mm (13.3 inches)89%extreme
September Weather27°C (80°F)358 mm (14.1 inches)89%extreme
October Weather26°C (80°F)297 mm (11.7 inches)86%extreme
November Weather26°C (79°F)232 mm (9.1 inches)89%extreme
December Weather25°C (77°F)312 mm (12.3 inches)86%very high

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