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September Weather in Heihoek, Netherlands

Last updated: August 27, 2025

In Heihoek, Netherlands, the average temperature in September hovers around 15°C (60°F), with lows dipping to a chilly 3°C (38°F) and highs soaring to a warm 32°C (90°F). Expect 61 mm (2.4 in) of precipitation spread over 11 days, contributing to an average humidity of 81%. Prepare for a mix of weather as you enjoy your time in this beautiful locale!

September Temperature in Heihoek

In September in Heihoek, the average temperature is 15°C (60°F). Maximums can reach 32°C (90°F), while minimums can drop as low as 3°C (38°F). This variation in temperature makes it essential to pack both light clothing for warmth and a jacket for cooler evenings when traveling.

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

The chart illustrates September temperature patterns in Heihoek, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heihoek, September typically has an average temperature of 15°C (60°F), with highs reaching up to 32°C (90°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec394145505765666659544542
Data source: Temperature data for Heihoek 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 Heihoek

In Heihoek in September, the total precipitation amount is 61 mm (2.4 in) over the course of 11 days.

September Precipitation Trends in Heihoek

The chart displays monthly precipitation patterns in Heihoek, 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 Heihoek, September typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec647372346169787761875388
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Heihoek

In Heihoek in September, humidity is 81%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sluggish and draining, which can challenge even the best-prepared traveler.

September Average Humidity in Heihoek

This chart illustrates the average monthly humidity levels in Heihoek, 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 Heihoek is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%87%84%77%74%72%71%81%88%91%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Heihoek

In Heihoek in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Heihoek.

Maximum UV Index Levels in Heihoek for September

The chart shows the monthly maximum UV Index (UVI) for Heihoek 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 Heihoek typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Heihoek 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 Heihoek Compares to Other Months

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

This table compares monthly weather conditions in Heihoek, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)64 mm (2.5 inches)91%low
February Weather5°C (41°F)73 mm (2.9 inches)90%low
March Weather7°C (45°F)72 mm (2.8 inches)87%moderate
April Weather10°C (50°F)34 mm (1.3 inches)84%moderate
May Weather14°C (57°F)61 mm (2.4 inches)77%high
June Weather18°C (65°F)69 mm (2.7 inches)74%very high
July Weather19°C (66°F)78 mm (3.1 inches)72%very high
August Weather19°C (66°F)77 mm (3.0 inches)71%high
September Weather15°C (60°F)61 mm (2.4 inches)81%moderate
October Weather12°C (54°F)87 mm (3.4 inches)88%moderate
November Weather7°C (45°F)53 mm (2.1 inches)91%low
December Weather5°C (42°F)88 mm (3.5 inches)92%low

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