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September Weather in Santa Juliana, Philippines

Last updated: August 27, 2025

In Santa Juliana, Philippines, the average temperature in September reaches a warm 27°C (80°F). Expect a minimum of 22°C (73°F) and a maximum of 33°C (93°F), making it a pleasant time for outdoor activities. However, be prepared for some rain, as precipitation totals around 303 mm (11.9 in) over 26 days. With an average humidity of 89%, the air feels quite tropical, so don’t forget to stay hydrated!

September Temperature in Santa Juliana

In September in Santa Juliana, the average temperature is 27°C (80°F), with maximums reaching up to 33°C (93°F) and minimums dropping to as low as 22°C (73°F). This climate makes it an ideal time for travelers to enjoy outdoor activities and explore the vibrant local culture.

September Weather in Santa Juliana: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Juliana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Juliana, September typically has an average temperature of 27°C (80°F), with highs reaching up to 33°C (93°F) and lows dropping to around 22°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec767780828482808080807978
Data source: Temperature data for Santa Juliana 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 Santa Juliana

In Santa Juliana in September, the precipitation amount is 303 mm (11.9 in) over a span of 26 days.

September Precipitation Trends in Santa Juliana

The chart displays monthly precipitation patterns in Santa Juliana, 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 Santa Juliana, September typically receives around 303 mm (11.9 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec5631324115423035728030320212299
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Juliana

In Santa Juliana 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 Santa Juliana

This chart illustrates the average monthly humidity levels in Santa Juliana, 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 Santa Juliana 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 Santa Juliana

In Santa Juliana 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 Santa Juliana, you can check here.

Maximum UV Index Levels in Santa Juliana for September

The chart shows the monthly maximum UV Index (UVI) for Santa Juliana 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 Santa Juliana typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111315151414141414131110
Data source: Santa Juliana 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 Santa Juliana Compares to Other Months

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

This table compares monthly weather conditions in Santa Juliana, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (76°F)56 mm (2.2 inches)76%extreme
February Weather25°C (77°F)31 mm (1.2 inches)71%extreme
March Weather27°C (80°F)32 mm (1.3 inches)68%extreme
April Weather28°C (82°F)41 mm (1.6 inches)69%extreme
May Weather29°C (84°F)154 mm (6.1 inches)76%extreme
June Weather28°C (82°F)230 mm (9.1 inches)87%extreme
July Weather27°C (81°F)357 mm (14.0 inches)88%extreme
August Weather27°C (80°F)280 mm (11.0 inches)89%extreme
September Weather27°C (80°F)303 mm (11.9 inches)89%extreme
October Weather27°C (80°F)201 mm (7.9 inches)86%extreme
November Weather26°C (79°F)122 mm (4.8 inches)89%extreme
December Weather25°C (78°F)99 mm (3.9 inches)86%very high

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