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September Weather in Hernani, Philippines

Last updated: August 27, 2025

In September, the average temperature in Hernani, Philippines hovers around 28°C (82°F), offering a warm and inviting climate. Expect the mercury to dip to a comfortable 25°C (77°F) and soar to a balmy 32°C (90°F). However, be prepared for some rain, as 217 mm (8.6 in) of precipitation can be expected over 25 days. The humidity wraps around you with an average of 83%, adding to the tropical ambiance.

September Temperature in Hernani

In September in Hernani, the average temperature is 28°C (82°F), with maximums reaching 32°C (90°F) and minimums dropping to 25°C (77°F). It's an ideal time to visit for those who enjoy warm weather and outdoor activities.

September Weather in Hernani: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Hernani, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hernani, September typically has an average temperature of 28°C (82°F), with highs reaching up to 32°C (90°F) and lows dropping to around 25°C (77°F).
JanFebMarAprMayJunJulAugSepOctNovDec797980818282828282818180
Data source: Temperature data for Hernani 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 Hernani

In Hernani in September, the precipitation amount is 217 mm (8.6 in) over a span of 25 days.

September Precipitation Trends in Hernani

The chart displays monthly precipitation patterns in Hernani, 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 Hernani, September typically receives around 217 mm (8.6 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec320213156134196267283205217295318427
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hernani

In Hernani in September humidity is 83%. With an average temperature of 28°C (82°F), this humidity feels like stepping into a warm, thick blanket, making travel languid and drenched in sweat.

September Average Humidity in Hernani

This chart illustrates the average monthly humidity levels in Hernani, 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 Hernani 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 Hernani

In Hernani 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 Hernani, you can check here.

Maximum UV Index Levels in Hernani for September

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

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

This table compares monthly weather conditions in Hernani, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)320 mm (12.6 inches)86%extreme
February Weather26°C (79°F)213 mm (8.4 inches)85%extreme
March Weather27°C (80°F)156 mm (6.1 inches)87%extreme
April Weather27°C (81°F)134 mm (5.3 inches)87%extreme
May Weather28°C (82°F)196 mm (7.7 inches)82%extreme
June Weather28°C (82°F)267 mm (10.5 inches)79%extreme
July Weather28°C (82°F)283 mm (11.1 inches)80%extreme
August Weather28°C (83°F)205 mm (8.1 inches)80%extreme
September Weather28°C (82°F)217 mm (8.6 inches)83%extreme
October Weather27°C (81°F)295 mm (11.6 inches)79%extreme
November Weather27°C (81°F)318 mm (12.5 inches)82%extreme
December Weather27°C (80°F)427 mm (16.8 inches)86%extreme

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