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September Weather in San Clemente, Philippines

Last updated: August 27, 2025

In September, the average temperature in San Clemente, Philippines hovers around 27°C (80°F), with minimums dipping to 22°C (72°F) and maximums peaking at 33°C (92°F). Be prepared for a fairly wet month, as precipitation can reach 346 mm (13.6 in) over 28 days. With an average humidity level of 89%, expect a tropical atmosphere that adds to the lush scenery of the area.

September Temperature in San Clemente

In September in San Clemente, the average temperature is 27°C (80°F). Maximums can reach 33°C (92°F), and minimums can be as low as 22°C (72°F). This pleasant climate makes San Clemente an ideal destination for travelers seeking warm and comfortable weather.

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

The chart illustrates September temperature patterns in San Clemente, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Clemente, September typically has an average temperature of 27°C (80°F), with highs reaching up to 33°C (92°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec777881828381807980808079
Data source: Temperature data for San Clemente 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 Clemente

In San Clemente in September, the total precipitation amount is 346 mm (13.6 in) spread over a period of 28 days.

September Precipitation Trends in San Clemente

The chart displays monthly precipitation patterns in San Clemente, 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 Clemente, September typically receives around 346 mm (13.6 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec4625418124835150148834622111374
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Clemente

In San Clemente 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 Clemente

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

In San Clemente 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 Clemente, you can check here.

Maximum UV Index Levels in San Clemente for September

The chart shows the monthly maximum UV Index (UVI) for San Clemente 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 Clemente typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111315151315141414131110
Data source: San Clemente 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 Clemente Compares to Other Months

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

This table compares monthly weather conditions in San Clemente, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)46 mm (1.8 inches)76%extreme
February Weather26°C (78°F)25 mm (1.0 inches)71%extreme
March Weather27°C (81°F)41 mm (1.6 inches)68%extreme
April Weather28°C (83°F)81 mm (3.2 inches)69%extreme
May Weather28°C (83°F)248 mm (9.8 inches)76%extreme
June Weather27°C (82°F)351 mm (13.8 inches)87%extreme
July Weather27°C (80°F)501 mm (19.7 inches)88%extreme
August Weather26°C (80°F)488 mm (19.2 inches)89%extreme
September Weather27°C (80°F)346 mm (13.6 inches)89%extreme
October Weather27°C (80°F)221 mm (8.7 inches)86%extreme
November Weather27°C (80°F)113 mm (4.5 inches)89%extreme
December Weather26°C (79°F)74 mm (2.9 inches)86%very high

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