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October Weather in Iwaki, Japan

Last updated: August 23, 2025

In October, the average temperature in Iwaki, Japan is a comfortable 18°C (64°F). You can expect a minimum of 10°C (51°F) and a maximum of 26°C (78°F). Rain is likely, with precipitation averaging 271 mm (10.7 in) over 15 days. Additionally, the average humidity tends to be quite high at 80%, creating a warm and muggy atmosphere.

October Temperature in Iwaki

In October in Iwaki, the average temperature is 18°C (64°F). The maximum can reach 26°C (78°F), while the minimum can drop to as low as 10°C (51°F). This mild climate makes it an ideal time for travelers to explore and enjoy the outdoors comfortably.

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

The chart illustrates October temperature patterns in Iwaki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iwaki, October typically has an average temperature of 18°C (64°F), with highs reaching up to 26°C (78°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec414247536166727671645546
Data source: Temperature data for Iwaki 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 Iwaki

In Iwaki in October, the precipitation amount is 271 mm (10.7 in) spread over 15 days.

October Precipitation Trends in Iwaki

The chart displays monthly precipitation patterns in Iwaki, 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 Iwaki, October typically receives around 271 mm (10.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec57451691361541362021371862718573
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Iwaki

In Iwaki in October humidity is 80%. With an average temperature of 18°C (64°F), this humidity feels like a warm, damp blanket wrapping around you, making travel a bit more exhausting as the air thickens and the heat clings to your skin.

October Average Humidity in Iwaki

This chart illustrates the average monthly humidity levels in Iwaki, 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 Iwaki is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%75%72%73%80%87%93%90%84%80%77%77%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Iwaki

In Iwaki in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Iwaki, you can refer to this Hourly UV Index in Iwaki.

Maximum UV Index Levels in Iwaki for October

The chart shows the monthly maximum UV Index (UVI) for Iwaki 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 Iwaki typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101011119653
Data source: Iwaki 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 Iwaki Compares to Other Months

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

This table compares monthly weather conditions in Iwaki, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)57 mm (2.2 inches)76%moderate
February Weather6°C (42°F)45 mm (1.8 inches)75%moderate
March Weather8°C (47°F)169 mm (6.6 inches)72%high
April Weather11°C (53°F)136 mm (5.4 inches)73%very high
May Weather16°C (61°F)154 mm (6.1 inches)80%very high
June Weather19°C (66°F)136 mm (5.3 inches)87%very high
July Weather22°C (72°F)202 mm (8.0 inches)92%extreme
August Weather25°C (76°F)137 mm (5.4 inches)90%extreme
September Weather22°C (72°F)186 mm (7.3 inches)84%very high
October Weather18°C (64°F)271 mm (10.7 inches)80%high
November Weather13°C (55°F)85 mm (3.4 inches)77%moderate
December Weather8°C (46°F)73 mm (2.9 inches)77%moderate

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