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September Weather in Holland, United States

Last updated: June 24, 2025

In September, the average temperature in Holland, United States hovers around 17°C (63°F). Expect a range that can dip to a chilly 2°C (36°F) or soar to a warm 31°C (89°F). Rain is moderately common with an average precipitation of 79 mm (3.1 in) spread over 10 days. Don't forget to prepare for a touch of humidity, averaging around 76%, adding a tropical feel to your month.

September Temperature in Holland

In September in Holland, the average temperature is 17°C (63°F). Maximum temperatures can reach 31°C (89°F), while minimums can drop as low as 2°C (36°F). Be prepared for a range of temperatures, making it a perfect time for both outdoor adventures and cozy indoor activities.

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 17°C (63°F), with highs reaching up to 31°C (89°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec252834455766716963523831
Data source: Temperature data for Holland 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 Holland

In Holland in September, the precipitation amount is 79 mm (3.1 in) over a span of 10 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 79 mm (3.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec89938612512110414710279143102105
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Holland

In Holland in September humidity is 76%. With an average temperature of 17°C (63°F), this humidity feels like traveling through a warm, enveloping blanket, making every outdoor adventure feel sticky and heavy, yet pleasantly refreshing when you find a cool breeze.

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 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%88%88%82%80%77%72%76%83%88%87%
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 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
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.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)89 mm (3.5 inches)91%moderate
February Weather-2°C (28°F)93 mm (3.7 inches)91%moderate
March Weather1°C (34°F)86 mm (3.4 inches)88%high
April Weather7°C (45°F)125 mm (4.9 inches)88%very high
May Weather14°C (57°F)121 mm (4.8 inches)82%very high
June Weather19°C (66°F)104 mm (4.1 inches)79%very high
July Weather21°C (71°F)147 mm (5.8 inches)77%very high
August Weather21°C (69°F)102 mm (4.0 inches)72%very high
September Weather17°C (63°F)79 mm (3.1 inches)76%very high
October Weather11°C (53°F)143 mm (5.6 inches)83%high
November Weather3°C (38°F)102 mm (4.0 inches)88%moderate
December Weather-1°C (31°F)105 mm (4.1 inches)87%low

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