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September Weather in Shosanbetsu, Japan

Last updated: August 23, 2025

In Shosanbetsu, Japan, the average temperature in September hovers around 18°C (65°F), with lows reaching 11°C (52°F) and peaks of 28°C (82°F). Expect 111 mm (4.4 in) of precipitation spread over 12 days, contributing to an average humidity of 86%.

September Temperature in Shosanbetsu

In September in Shosanbetsu, the average temperature is 18°C (65°F). The maximum can reach 28°C (82°F), while the minimum can be as low as 11°C (52°F). This mild climate makes it an ideal time for exploring and enjoying outdoor activities.

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

The chart illustrates September temperature patterns in Shosanbetsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shosanbetsu, September typically has an average temperature of 18°C (65°F), with highs reaching up to 28°C (82°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec262634415157676964554230
Data source: Temperature data for Shosanbetsu 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 Shosanbetsu

In Shosanbetsu, in September, the precipitation amount is 111 mm (4.4 in) over a span of 12 days.

September Precipitation Trends in Shosanbetsu

The chart displays monthly precipitation patterns in Shosanbetsu, 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 Shosanbetsu, September typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec108115946994100119176111196243210
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Shosanbetsu

In Shosanbetsu in September humidity is 86%. With an average temperature of 18°C (65°F), this humidity feels like you’re wrapped in a warm, heavy blanket, making outdoor activities feel quite muggy and sticky for traveling.

September Average Humidity in Shosanbetsu

This chart illustrates the average monthly humidity levels in Shosanbetsu, 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 Shosanbetsu is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%84%83%84%88%88%93%94%86%79%77%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Shosanbetsu

In Shosanbetsu 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 Shosanbetsu.

Maximum UV Index Levels in Shosanbetsu for September

The chart shows the monthly maximum UV Index (UVI) for Shosanbetsu 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 Shosanbetsu typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789997532
Data source: Shosanbetsu 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 Shosanbetsu Compares to Other Months

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

This table compares monthly weather conditions in Shosanbetsu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)108 mm (4.3 inches)87%low
February Weather-3°C (26°F)115 mm (4.5 inches)84%moderate
March Weather1°C (34°F)94 mm (3.7 inches)83%moderate
April Weather5°C (41°F)69 mm (2.7 inches)84%high
May Weather10°C (51°F)93 mm (3.7 inches)88%very high
June Weather14°C (58°F)100 mm (3.9 inches)88%very high
July Weather19°C (67°F)119 mm (4.7 inches)93%very high
August Weather21°C (69°F)176 mm (6.9 inches)94%very high
September Weather18°C (65°F)111 mm (4.4 inches)86%high
October Weather13°C (55°F)196 mm (7.7 inches)79%moderate
November Weather6°C (43°F)243 mm (9.6 inches)77%moderate
December Weather-1°C (30°F)210 mm (8.3 inches)83%low

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