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September Weather in Holualoa, United States

Last updated: June 24, 2025

The average temperature in Holualoa, United States for September is a pleasant 23°C (73°F). During this time, you can expect temperatures to range from a minimum of 20°C (68°F) to a maximum of 27°C (81°F). However, be prepared for some rain, as precipitation averages 318 mm (12.5 in) over 28 days, resulting in an average humidity of 82%.

September Temperature in Holualoa

In September in Holualoa, the average temperature is 23°C (73°F). The maximum can reach 27°C (81°F), and the minimum can be as low as 20°C (68°F). This mild and pleasant climate makes Holualoa an ideal destination for outdoor activities and sightseeing during this time of year.

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

The chart illustrates September temperature patterns in Holualoa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Holualoa, September typically has an average temperature of 23°C (73°F), with highs reaching up to 27°C (81°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec686868707071737373737270
Data source: Temperature data for Holualoa 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 Holualoa

In Holualoa in September, the precipitation amount is 318 mm (12.5 in) accumulated over a period of 28 days.

September Precipitation Trends in Holualoa

The chart displays monthly precipitation patterns in Holualoa, 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 Holualoa, September typically receives around 318 mm (12.5 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec136158174206316377514508318302183198
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Holualoa

In Holualoa in September, humidity is 82%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making outdoor activities feel a bit more strenuous but offering a tropical ambiance perfect for leisurely strolls and relaxed sightseeing.

September Average Humidity in Holualoa

This chart illustrates the average monthly humidity levels in Holualoa, 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 Holualoa is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%77%80%80%82%83%84%82%83%83%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Holualoa

In Holualoa in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Holualoa.

Maximum UV Index Levels in Holualoa for September

The chart shows the monthly maximum UV Index (UVI) for Holualoa 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 Holualoa typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec811121313131414131298
Data source: Holualoa 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 Holualoa Compares to Other Months

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

This table compares monthly weather conditions in Holualoa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (69°F)135 mm (5.3 inches)79%very high
February Weather20°C (68°F)158 mm (6.2 inches)79%extreme
March Weather20°C (69°F)174 mm (6.8 inches)77%extreme
April Weather21°C (70°F)206 mm (8.1 inches)80%extreme
May Weather21°C (71°F)316 mm (12.4 inches)80%extreme
June Weather22°C (72°F)377 mm (14.8 inches)82%extreme
July Weather23°C (73°F)514 mm (20.2 inches)83%extreme
August Weather23°C (73°F)508 mm (20.0 inches)84%extreme
September Weather23°C (73°F)318 mm (12.5 inches)82%extreme
October Weather23°C (73°F)302 mm (11.9 inches)83%extreme
November Weather22°C (72°F)183 mm (7.2 inches)83%very high
December Weather21°C (70°F)198 mm (7.8 inches)81%very high

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