September Weather in Kaunakakai, United States

Last updated: June 24, 2025

In September, the average temperature in Kaunakakai, United States is a comfortable 26°C (79°F). Expect a minimum of 23°C (74°F) and a maximum of 28°C (83°F), making it ideal for outdoor activities. During this time, the area receives about 12 mm (0.5 in) of precipitation over 1 day, and humidity levels hover around 84%, adding a touch of tropical warmth to your experience.

September Temperature in Kaunakakai

In September in Kaunakakai, the average temperature is 26°C (79°F). Maximums can reach 28°C (83°F), while minimums can drop to as low as 23°C (74°F). This pleasant weather makes Kaunakakai an ideal destination for travelers seeking a comfortable climate.

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

The chart illustrates September temperature patterns in Kaunakakai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kaunakakai, September typically has an average temperature of 26°C (79°F), with highs reaching up to 28°C (83°F) and lows dropping to around 23°C (74°F).

Data source: Temperature data for Kaunakakai generated using information from the Copernicus Climate Change Service.

September Precipitation in Kaunakakai

In Kaunakakai in September, the precipitation amount is 12 mm (0.5 in) over the course of 1 day.

September Precipitation Trends in Kaunakakai

The chart displays monthly precipitation patterns in Kaunakakai, 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 Kaunakakai, September typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Kaunakakai

In Kaunakakai in September, humidity is 84%. With an average temperature of 26°C (79°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel sticky and exhausting, yet the vibrant atmosphere and lush surroundings offer a refreshing allure that invites exploration.

September Average Humidity in Kaunakakai

This chart illustrates the average monthly humidity levels in Kaunakakai, 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 Kaunakakai is approximately 84%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kaunakakai

In Kaunakakai in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Kaunakakai.

Maximum UV Index Levels in Kaunakakai for September

The chart shows the monthly maximum UV Index (UVI) for Kaunakakai 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 Kaunakakai typically reaches 12, which falls under the extreme exposure category.

Data source: Kaunakakai 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 Kaunakakai Compares to Other Months

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

This table compares monthly weather conditions in Kaunakakai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	17 mm (0.7 inches)	78%	very high
February Weather	22°C (73°F)	59 mm (2.3 inches)	79%	very high
March Weather	23°C (73°F)	35 mm (1.4 inches)	79%	extreme
April Weather	23°C (74°F)	31 mm (1.2 inches)	82%	extreme
May Weather	24°C (75°F)	15 mm (0.6 inches)	83%	extreme
June Weather	25°C (77°F)	5 mm (0.2 inches)	84%	extreme
July Weather	25°C (78°F)	6 mm (0.3 inches)	85%	extreme
August Weather	26°C (78°F)	7 mm (0.3 inches)	85%	extreme
September Weather	26°C (79°F)	12 mm (0.5 inches)	84%	extreme
October Weather	25°C (78°F)	26 mm (1.0 inches)	83%	extreme
November Weather	25°C (77°F)	11 mm (0.4 inches)	82%	very high
December Weather	24°C (75°F)	44 mm (1.8 inches)	81%	very high