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September Weather in San Julian, Philippines

Last updated: August 27, 2025

In September, the average temperature in San Julian, Philippines hovers around 28°C (83°F), making it a warm destination. Daytime highs can reach up to 34°C (93°F), while the nights are comfortably mild at a minimum of 25°C (77°F). However, be prepared for some rain, as the area receives an average precipitation of 205 mm (8.1 in) over 25 days of the month, with humidity levels at a steamy 83%.

September Temperature in San Julian

In September in San Julian, the average temperature is 28°C (83°F). Maximums can reach 34°C (93°F), and minimums can be as low as 25°C (77°F). This warm climate makes San Julian an ideal destination for travelers seeking sunny weather and outdoor adventures.

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

The chart illustrates September temperature patterns in San Julian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Julian, September typically has an average temperature of 28°C (83°F), with highs reaching up to 34°C (93°F) and lows dropping to around 25°C (77°F).
JanFebMarAprMayJunJulAugSepOctNovDec797980818383838383828180
Data source: Temperature data for San Julian 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 Julian

In San Julian in September, the precipitation amount is 205 mm (8.1 in) spread over 25 days.

September Precipitation Trends in San Julian

The chart displays monthly precipitation patterns in San Julian, 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 Julian, September typically receives around 205 mm (8.1 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec320230163154168226278205205275285443
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Julian

In San Julian in September humidity is 83%. With an average temperature of 28°C (83°F), this humidity feels like a warm, sticky blanket wrapping around you, making travel uncomfortable and requiring frequent breaks to hydrate and cool down.

September Average Humidity in San Julian

This chart illustrates the average monthly humidity levels in San Julian, 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 Julian is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%87%87%82%79%80%80%83%79%82%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Julian

In San Julian 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 Julian, you can check here.

Maximum UV Index Levels in San Julian for September

The chart shows the monthly maximum UV Index (UVI) for San Julian 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 Julian typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121316161414141414141211
Data source: San Julian 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 Julian Compares to Other Months

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

This table compares monthly weather conditions in San Julian, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)320 mm (12.6 inches)86%extreme
February Weather26°C (79°F)230 mm (9.1 inches)85%extreme
March Weather27°C (80°F)163 mm (6.4 inches)87%extreme
April Weather27°C (81°F)154 mm (6.1 inches)87%extreme
May Weather28°C (83°F)168 mm (6.6 inches)82%extreme
June Weather28°C (83°F)226 mm (8.9 inches)79%extreme
July Weather28°C (83°F)278 mm (11.0 inches)80%extreme
August Weather28°C (83°F)205 mm (8.1 inches)80%extreme
September Weather28°C (83°F)205 mm (8.1 inches)83%extreme
October Weather28°C (82°F)274 mm (10.8 inches)79%extreme
November Weather27°C (81°F)285 mm (11.2 inches)82%extreme
December Weather27°C (80°F)443 mm (17.4 inches)86%extreme

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