September Weather in Hawi, United States

Last updated: June 24, 2025

In September, the average temperature in Hawi, United States hovers around 25°C (77°F), providing a warm and inviting climate. Temperatures can dip to a comfortable 22°C (72°F) at their lowest and reach a pleasant 28°C (83°F) at their peak. Expect some light rain, with an average precipitation of 17 mm (0.7 in) spread over 5 days. Humidity levels are typically high at 84%, adding a touch of tropical warmth to your experience.

September Temperature in Hawi

In September in Hawi, the average temperature is 25°C (77°F). Maximum can reach 28°C (83°F) and minimum can be as low as 22°C (72°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy the outdoor activities that Hawi has to offer.

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

The chart illustrates September temperature patterns in Hawi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hawi, September typically has an average temperature of 25°C (77°F), with highs reaching up to 28°C (83°F) and lows dropping to around 22°C (72°F).

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

September Precipitation in Hawi

In Hawi in September, the precipitation amount is 17 mm (0.7 in) over the course of 5 days.

September Precipitation Trends in Hawi

The chart displays monthly precipitation patterns in Hawi, 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 Hawi, September typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 5 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Hawi

In Hawi in September, humidity is 84%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities challenging and prompting travelers to seek shade and stay hydrated.

September Average Humidity in Hawi

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

In Hawi 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 Hawi.

Maximum UV Index Levels in Hawi for September

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

Data source: Hawi 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 Hawi Compares to Other Months

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

This table compares monthly weather conditions in Hawi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (72°F)	38 mm (1.5 inches)	78%	very high
February Weather	22°C (71°F)	76 mm (3.0 inches)	79%	very high
March Weather	22°C (72°F)	50 mm (2.0 inches)	79%	extreme
April Weather	23°C (73°F)	44 mm (1.7 inches)	82%	extreme
May Weather	23°C (74°F)	37 mm (1.5 inches)	83%	extreme
June Weather	24°C (76°F)	7 mm (0.3 inches)	84%	extreme
July Weather	25°C (77°F)	19 mm (0.7 inches)	85%	extreme
August Weather	25°C (77°F)	43 mm (1.7 inches)	85%	extreme
September Weather	25°C (77°F)	17 mm (0.7 inches)	84%	extreme
October Weather	25°C (77°F)	47 mm (1.9 inches)	83%	extreme
November Weather	24°C (75°F)	32 mm (1.2 inches)	82%	very high
December Weather	23°C (73°F)	79 mm (3.1 inches)	81%	very high