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September Weather in Otaki, Japan

Last updated: August 23, 2025

In September, the average temperature in Otaki, Japan is a comfortable 19°C (67°F). However, temperatures can vary significantly, with a minimum of 5°C (42°F) and a maximum reaching up to 31°C (89°F). Expect some rain, as precipitation amounts to 261 mm (10.3 in) over the course of 17 days, and prepare for a humid atmosphere, with an average humidity level of 87%.

September Temperature in Otaki

In September in Otaki, the average temperature is 19°C (67°F). The maximum can reach 31°C (89°F), while the minimum can drop as low as 5°C (42°F). Be prepared for a range of temperatures to make the most of your travel experience.

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

The chart illustrates September temperature patterns in Otaki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Otaki, September typically has an average temperature of 19°C (67°F), with highs reaching up to 31°C (89°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec293040485864717467574535
Data source: Temperature data for Otaki 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 Otaki

In Otaki in September, the precipitation amount is 261 mm (10.3 in) over a span of 17 days.

September Precipitation Trends in Otaki

The chart displays monthly precipitation patterns in Otaki, 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 Otaki, September typically receives around 261 mm (10.3 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec9510917722222823951629526124691107
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Otaki

In Otaki in September, humidity is 87%. With an average temperature of 19°C (67°F), this humidity feels like a warm blanket wrapping around you, making traveling a bit heavier and leaving you craving for refreshing drinks and shade throughout the day.

September Average Humidity in Otaki

This chart illustrates the average monthly humidity levels in Otaki, 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 Otaki is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%74%76%83%87%93%91%87%85%83%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Otaki

In Otaki in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Otaki.

Maximum UV Index Levels in Otaki for September

The chart shows the monthly maximum UV Index (UVI) for Otaki 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 Otaki typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101111121210754
Data source: Otaki 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 Otaki Compares to Other Months

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

This table compares monthly weather conditions in Otaki, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)95 mm (3.7 inches)82%moderate
February Weather-1°C (30°F)109 mm (4.3 inches)79%high
March Weather5°C (40°F)176 mm (6.9 inches)74%very high
April Weather9°C (48°F)222 mm (8.8 inches)76%very high
May Weather14°C (58°F)228 mm (9.0 inches)83%extreme
June Weather18°C (64°F)239 mm (9.4 inches)87%extreme
July Weather22°C (71°F)516 mm (20.3 inches)93%extreme
August Weather23°C (74°F)295 mm (11.6 inches)91%extreme
September Weather19°C (67°F)261 mm (10.3 inches)87%very high
October Weather14°C (57°F)246 mm (9.7 inches)85%high
November Weather7°C (45°F)91 mm (3.6 inches)83%moderate
December Weather2°C (35°F)107 mm (4.2 inches)83%moderate

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