September Weather in Waikapu, United States

Last updated: June 24, 2025

In Waikapu, United States, the average temperature for September hovers around 26°C (79°F). Expect a minimum of 22°C (72°F) and a maximum of 32°C (90°F), creating a warm and inviting climate. During this month, you'll see about 19 mm (0.7 in) of precipitation spread over 5 days, while the average humidity sits at a comfortable 84%. Enjoy the perfect blend of warmth and moisture!

September Temperature in Waikapu

In September in Waikapu, the average temperature is 26°C (79°F). Maximums can reach 32°C (90°F), and minimums can be as low as 22°C (72°F). This mild weather makes it an ideal time for traveling and exploring the local attractions.

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

The chart illustrates September temperature patterns in Waikapu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waikapu, September typically has an average temperature of 26°C (79°F), with highs reaching up to 32°C (90°F) and lows dropping to around 22°C (72°F).

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

September Precipitation in Waikapu

In Waikapu in September, the total precipitation amount is 19 mm (0.7 in) spread over the course of 5 days.

September Precipitation Trends in Waikapu

The chart displays monthly precipitation patterns in Waikapu, 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 Waikapu, September typically receives around 19 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.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Waikapu

In Waikapu 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 Waikapu

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

In Waikapu 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 Waikapu.

Maximum UV Index Levels in Waikapu for September

The chart shows the monthly maximum UV Index (UVI) for Waikapu 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 Waikapu typically reaches 13, which falls under the extreme exposure category.

Data source: Waikapu 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 Waikapu Compares to Other Months

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

This table compares monthly weather conditions in Waikapu, 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 (73°F)	30 mm (1.2 inches)	78%	very high
February Weather	22°C (72°F)	78 mm (3.1 inches)	79%	very high
March Weather	22°C (73°F)	55 mm (2.2 inches)	79%	extreme
April Weather	23°C (74°F)	52 mm (2.1 inches)	82%	extreme
May Weather	24°C (76°F)	37 mm (1.5 inches)	83%	extreme
June Weather	25°C (78°F)	15 mm (0.6 inches)	84%	extreme
July Weather	26°C (79°F)	24 mm (0.9 inches)	85%	extreme
August Weather	26°C (79°F)	28 mm (1.1 inches)	85%	extreme
September Weather	26°C (79°F)	19 mm (0.7 inches)	84%	extreme
October Weather	25°C (78°F)	50 mm (2.0 inches)	83%	extreme
November Weather	24°C (76°F)	20 mm (0.8 inches)	82%	very high
December Weather	23°C (74°F)	45 mm (1.8 inches)	81%	very high