September Weather in Holland, United States

Last updated: June 24, 2025

In September, the average temperature in Holland, United States is a pleasant 23°C (73°F), with a minimum reaching as low as 8°C (47°F) and a maximum soaring to 35°C (95°F). Expect precipitation of about 86 mm (3.4 in) over 7 days, accompanied by an average humidity of 69%, making it a month that's both warm and slightly humid.

September Temperature in Holland

In September in Holland, the average temperature is 23°C (73°F), with maximums possibly reaching 35°C (95°F) and minimums dropping as low as 8°C (47°F). It's a great time to enjoy a variety of outdoor activities, so pack accordingly for both the warm days and cooler evenings!

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

The chart illustrates September temperature patterns in Holland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Holland, September typically has an average temperature of 23°C (73°F), with highs reaching up to 35°C (95°F) and lows dropping to around 8°C (47°F).

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

September Precipitation in Holland

In Holland in September, the total precipitation amount is 86 mm (3.4 in) over a span of 7 days.

September Precipitation Trends in Holland

The chart displays monthly precipitation patterns in Holland, 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 Holland, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 7 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 Holland

In Holland in September humidity is 69%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making it perfect for leisurely strolls but potentially uncomfortable during the peak hours of the day, so travelers should stay hydrated and seek shade when exploring.

September Average Humidity in Holland

This chart illustrates the average monthly humidity levels in Holland, 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 Holland is approximately 69%, 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 Holland

In Holland in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Holland.

Maximum UV Index Levels in Holland for September

The chart shows the monthly maximum UV Index (UVI) for Holland 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 Holland typically reaches 9, which falls under the very high exposure category.

Data source: Holland 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 Holland Compares to Other Months

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

This table compares monthly weather conditions in Holland, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (35°F)	91 mm (3.6 inches)	87%	moderate
February Weather	4°C (39°F)	125 mm (4.9 inches)	85%	moderate
March Weather	9°C (48°F)	145 mm (5.7 inches)	86%	high
April Weather	14°C (57°F)	126 mm (4.9 inches)	84%	very high
May Weather	20°C (69°F)	140 mm (5.5 inches)	79%	very high
June Weather	25°C (77°F)	131 mm (5.2 inches)	82%	extreme
July Weather	26°C (80°F)	78 mm (3.1 inches)	79%	very high
August Weather	25°C (77°F)	87 mm (3.4 inches)	70%	very high
September Weather	23°C (73°F)	86 mm (3.4 inches)	69%	very high
October Weather	16°C (61°F)	116 mm (4.5 inches)	76%	high
November Weather	7°C (45°F)	96 mm (3.8 inches)	88%	moderate
December Weather	5°C (41°F)	108 mm (4.2 inches)	87%	moderate