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September Weather in Ostend, New Zealand

Last updated: August 31, 2025

In September, the average temperature in Ostend, New Zealand hovers around 13°C (56°F), with a minimum dip to 8°C (46°F) and a maximum rise to 18°C (64°F). Expect about 106 mm (4.2 in) of precipitation over 13 days, accompanied by an average humidity level of 80%, creating a refreshing but damp atmosphere.

September Temperature in Ostend

In September in Ostend, the average temperature is 13°C (56°F). Maximums can reach 18°C (64°F) and minimums can be as low as 8°C (46°F). This mild weather makes it a great time to explore Ostend and enjoy outdoor activities.

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

The chart illustrates September temperature patterns in Ostend, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ostend, September typically has an average temperature of 13°C (56°F), with highs reaching up to 18°C (64°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec686968646157555556596266
Data source: Temperature data for Ostend 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 Ostend

In Ostend in September, the precipitation amount is 106 mm (4.2 in) spread over a duration of 13 days.

September Precipitation Trends in Ostend

The chart displays monthly precipitation patterns in Ostend, 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 Ostend, September typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec55839311486117100106106807470
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ostend

In Ostend in September humidity is 80%. With average temperature 13°C (56°F) this humidity feels like a damp chill that seeps into your bones, making outdoor exploration more challenging and necessitating layered clothing for comfort.

September Average Humidity in Ostend

This chart illustrates the average monthly humidity levels in Ostend, 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 Ostend is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%76%74%75%80%82%83%81%80%80%80%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ostend

In Ostend in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Ostend.

Maximum UV Index Levels in Ostend for September

The chart shows the monthly maximum UV Index (UVI) for Ostend 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 Ostend typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141410743357101113
Data source: Ostend 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 Ostend Compares to Other Months

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

This table compares monthly weather conditions in Ostend, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)55 mm (2.2 inches)79%extreme
February Weather21°C (69°F)82 mm (3.2 inches)76%extreme
March Weather20°C (68°F)93 mm (3.6 inches)74%very high
April Weather18°C (65°F)114 mm (4.5 inches)74%high
May Weather16°C (61°F)86 mm (3.4 inches)80%moderate
June Weather14°C (57°F)117 mm (4.6 inches)82%moderate
July Weather13°C (55°F)100 mm (3.9 inches)83%moderate
August Weather13°C (56°F)106 mm (4.2 inches)80%moderate
September Weather13°C (56°F)106 mm (4.2 inches)80%high
October Weather15°C (59°F)80 mm (3.2 inches)80%very high
November Weather17°C (63°F)74 mm (2.9 inches)80%extreme
December Weather19°C (67°F)70 mm (2.7 inches)78%extreme

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