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October Weather in Isa, Japan

Last updated: August 23, 2025

In Isa, Japan, the average temperature in October is a comfortable 20°C (69°F). You can expect minimum temperatures to dip to 9°C (49°F), while highs may reach a warm 31°C (88°F). This month sees around 141 mm (5.6 in) of precipitation over approximately 10 days, coupled with an average humidity of 78%.

October Temperature in Isa

In October in Isa, the average temperature is 20°C (69°F). The maximum can reach 31°C (88°F), while the minimum can drop as low as 9°C (49°F). This favorable weather makes Isa an ideal destination for travelers seeking a pleasant climate.

October Weather in Isa: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Isa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Isa, October typically has an average temperature of 20°C (69°F), with highs reaching up to 31°C (88°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec454654606873808277685748
Data source: Temperature data for Isa 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.

October Precipitation in Isa

In Isa in October, the total precipitation amount is 141 mm (5.6 in) over a period of 10 days.

October Precipitation Trends in Isa

The chart displays monthly precipitation patterns in Isa, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Isa, October typically receives around 141 mm (5.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec6111016215926138648323425914110294
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Isa

In Isa in October, humidity is 78%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making travel somewhat uncomfortable as sweat clings to your skin and the air feels thick and heavy, urging you to seek out shaded areas and refreshing drinks.

October Average Humidity in Isa

This chart illustrates the average monthly humidity levels in Isa, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Isa is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%68%72%79%83%86%90%85%80%78%76%75%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Isa

In Isa in October, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Isa.

Maximum UV Index Levels in Isa for October

The chart shows the monthly maximum UV Index (UVI) for Isa in October, 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 October, the maximum UV index in Isa typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec569111212121311864
Data source: Isa October 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 October Weather in Isa Compares to Other Months

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

This table compares monthly weather conditions in Isa, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)61 mm (2.4 inches)72%moderate
February Weather8°C (47°F)110 mm (4.3 inches)68%high
March Weather12°C (54°F)162 mm (6.4 inches)72%very high
April Weather16°C (61°F)159 mm (6.3 inches)79%extreme
May Weather20°C (68°F)261 mm (10.3 inches)83%extreme
June Weather23°C (74°F)386 mm (15.2 inches)86%extreme
July Weather26°C (80°F)483 mm (19.0 inches)90%extreme
August Weather28°C (82°F)234 mm (9.2 inches)85%extreme
September Weather25°C (77°F)259 mm (10.2 inches)80%extreme
October Weather20°C (69°F)141 mm (5.6 inches)78%very high
November Weather14°C (57°F)102 mm (4.0 inches)76%high
December Weather9°C (48°F)94 mm (3.7 inches)74%moderate

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