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September Weather in Haibara-akanedai, Japan

Last updated: August 23, 2025

In Haibara-akanedai, Japan, the average temperature in September hovers around 22°C (72°F), with nighttime lows dipping to a cool 10°C (50°F) and daytime highs soaring up to a warm 34°C (93°F). Expect precipitation of approximately 225 mm (8.9 in) spread over 17 days, contributing to the region's notable average humidity of 87%.

September Temperature in Haibara-akanedai

In September in Haibara-akanedai, the average temperature is 22°C (72°F). The maximum can reach 34°C (93°F), while the minimum can drop to as low as 10°C (50°F). Be sure to pack for both warm days and cooler evenings when traveling!

September Weather in Haibara-akanedai: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Haibara-akanedai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Haibara-akanedai, September typically has an average temperature of 22°C (72°F), with highs reaching up to 34°C (93°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec373846546370777972625041
Data source: Temperature data for Haibara-akanedai 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 Haibara-akanedai

In Haibara-akanedai, in September, the precipitation amount is 225 mm (8.9 in) over the course of 17 days.

September Precipitation Trends in Haibara-akanedai

The chart displays monthly precipitation patterns in Haibara-akanedai, 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 Haibara-akanedai, September typically receives around 225 mm (8.9 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec67781461411692243372022253215378
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Haibara-akanedai

In Haibara-akanedai in September humidity is 87%. With an average temperature of 22°C (72°F), this humidity feels like a warm blanket wrapping around you, making every step while traveling feel slightly heavier and more tedious, yet still refreshing in the shade.

September Average Humidity in Haibara-akanedai

This chart illustrates the average monthly humidity levels in Haibara-akanedai, 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 Haibara-akanedai 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 Haibara-akanedai

In Haibara-akanedai 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 Haibara-akanedai.

Maximum UV Index Levels in Haibara-akanedai for September

The chart shows the monthly maximum UV Index (UVI) for Haibara-akanedai 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 Haibara-akanedai typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111112121210764
Data source: Haibara-akanedai 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 Haibara-akanedai Compares to Other Months

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

This table compares monthly weather conditions in Haibara-akanedai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)67 mm (2.6 inches)82%moderate
February Weather3°C (38°F)78 mm (3.1 inches)79%high
March Weather8°C (46°F)146 mm (5.7 inches)74%very high
April Weather12°C (54°F)141 mm (5.6 inches)76%extreme
May Weather17°C (64°F)169 mm (6.6 inches)83%extreme
June Weather21°C (70°F)224 mm (8.8 inches)87%extreme
July Weather25°C (77°F)336 mm (13.2 inches)93%extreme
August Weather26°C (80°F)202 mm (7.9 inches)91%extreme
September Weather22°C (72°F)225 mm (8.9 inches)87%very high
October Weather17°C (62°F)321 mm (12.6 inches)85%high
November Weather10°C (51°F)53 mm (2.1 inches)83%high
December Weather5°C (41°F)78 mm (3.1 inches)83%moderate

Compare Haibara-akanedai's Climate with Cities Worldwide