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July Weather in Koriyama, Japan

Last updated: August 23, 2025

In July, the average temperature in Koriyama, Japan hovers around 23°C (74°F), offering a pleasant climate. Expect minimum temperatures to drop to 15°C (58°F) and maximums to reach up to 35°C (95°F). However, be prepared for considerable precipitation, with 225 mm (8.8 in) expected over 20 days, coupled with a high average humidity of 92%. Enjoy the warmth, but don’t forget your umbrella!

July Temperature in Koriyama

In July, in Koriyama, the average temperature is 23°C (74°F). The maximum can reach 35°C (95°F), while the minimum can drop as low as 15°C (58°F). This range makes Koriyama an ideal destination for travelers seeking warm and pleasant weather.

July Weather in Koriyama: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Koriyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koriyama, July typically has an average temperature of 23°C (74°F), with highs reaching up to 35°C (95°F) and lows dropping to around 15°C (58°F).
JanFebMarAprMayJunJulAugSepOctNovDec323441506167747768584736
Data source: Temperature data for Koriyama 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.

July Precipitation in Koriyama

In Koriyama in July, the precipitation amount is 225 mm (8.8 in) falling over the course of 20 days.

July Precipitation Trends in Koriyama

The chart displays monthly precipitation patterns in Koriyama, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Koriyama, July typically receives around 225 mm (8.8 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec5344110991031002251231391903862
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Koriyama

In Koriyama in July, humidity is 92%. With an average temperature of 23°C (74°F), this humidity feels like a heavy blanket wrapped around you, making it sticky and uncomfortable for traveling.

July Average Humidity in Koriyama

This chart illustrates the average monthly humidity levels in Koriyama, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Koriyama is approximately 92%, 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 July generated using information from the Copernicus Climate Change Service.

July UV Index in Koriyama

In Koriyama in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Koriyama.

Maximum UV Index Levels in Koriyama for July

The chart shows the monthly maximum UV Index (UVI) for Koriyama in July, 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 July, the maximum UV index in Koriyama typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111119653
Data source: Koriyama July 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 July Weather in Koriyama Compares to Other Months

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

This table compares monthly weather conditions in Koriyama, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)53 mm (2.1 inches)76%moderate
February Weather1°C (34°F)44 mm (1.7 inches)75%moderate
March Weather5°C (42°F)110 mm (4.3 inches)72%high
April Weather10°C (50°F)99 mm (3.9 inches)73%very high
May Weather16°C (61°F)102 mm (4.0 inches)80%very high
June Weather19°C (67°F)100 mm (3.9 inches)87%extreme
July Weather23°C (74°F)225 mm (8.8 inches)92%extreme
August Weather25°C (77°F)123 mm (4.8 inches)90%extreme
September Weather20°C (68°F)139 mm (5.5 inches)84%very high
October Weather14°C (58°F)190 mm (7.5 inches)80%high
November Weather8°C (47°F)38 mm (1.5 inches)77%moderate
December Weather2°C (37°F)62 mm (2.4 inches)77%moderate

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