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September Weather in Heemstede, Netherlands

Last updated: August 27, 2025

The average temperature in Heemstede, Netherlands during September is 16°C (61°F), with a minimum of 8°C (46°F) and a maximum of 27°C (81°F). Expect around 96 mm (3.8 in) of precipitation spread over 13 days, resulting in an average humidity of 83%.

September Temperature in Heemstede

In September in Heemstede, the average temperature is 16°C (61°F), with maximums reaching up to 27°C (81°F) and minimums dropping as low as 8°C (46°F). This mild climate makes Heemstede an ideal destination for travelers looking to enjoy pleasant weather during their visit.

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

The chart illustrates September temperature patterns in Heemstede, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heemstede, September typically has an average temperature of 16°C (61°F), with highs reaching up to 27°C (81°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec414144485562646560554844
Data source: Temperature data for Heemstede 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 Heemstede

In Heemstede in September, the precipitation amount is 96 mm (3.8 in) spread over 13 days, indicating a relatively rainy period.

September Precipitation Trends in Heemstede

The chart displays monthly precipitation patterns in Heemstede, 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 Heemstede, September typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec66727143587068959612070110
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Heemstede

In Heemstede in September, humidity is 83%. With an average temperature of 16°C (61°F), this humidity feels like a warm, muggy blanket wrapping around you, making travel a bit sticky and potentially uncomfortable as you navigate through the sights.

September Average Humidity in Heemstede

This chart illustrates the average monthly humidity levels in Heemstede, 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 Heemstede is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%85%84%82%80%78%83%86%87%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Heemstede

In Heemstede 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 Heemstede.

Maximum UV Index Levels in Heemstede for September

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

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

This table compares monthly weather conditions in Heemstede, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)66 mm (2.6 inches)87%low
February Weather5°C (42°F)72 mm (2.8 inches)87%low
March Weather7°C (44°F)71 mm (2.8 inches)86%moderate
April Weather9°C (49°F)43 mm (1.7 inches)85%moderate
May Weather13°C (55°F)58 mm (2.3 inches)84%high
June Weather17°C (62°F)70 mm (2.8 inches)81%very high
July Weather18°C (65°F)68 mm (2.7 inches)80%very high
August Weather19°C (66°F)95 mm (3.7 inches)78%high
September Weather16°C (61°F)96 mm (3.8 inches)83%moderate
October Weather13°C (56°F)120 mm (4.7 inches)86%moderate
November Weather9°C (48°F)70 mm (2.8 inches)87%low
December Weather6°C (44°F)110 mm (4.3 inches)86%low

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