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June Weather in Koriyama, Japan

Last updated: August 23, 2025

In June, the average temperature in Koriyama, Japan is a comfortable 19°C (67°F), although it can swing between a low of 8°C (47°F) and a high of 33°C (91°F). Expect around 100 mm (3.9 in) of rain over approximately 13 days, contributing to the area's high average humidity of 87%. Embrace the warmth and prepare for the occasional shower!

June Temperature in Koriyama

In June in Koriyama, the average temperature is 19°C (67°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop to as low as 8°C (47°F). This makes Koriyama an ideal destination for travelers seeking a comfortable climate with a mix of warm and cool days.

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

The chart illustrates June 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, June typically has an average temperature of 19°C (67°F), with highs reaching up to 33°C (91°F) and lows dropping to around 8°C (47°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.

June Precipitation in Koriyama

In Koriyama in June, the total precipitation amount is 100 mm (3.9 in), occurring over a span of 13 days.

June Precipitation Trends in Koriyama

The chart displays monthly precipitation patterns in Koriyama, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Koriyama, June typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec5344110991031002251231391903862
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Koriyama

In Koriyama in June, humidity is 87%. With an average temperature of 19°C (67°F), this humidity feels like a warm blanket wrapping around you, making traveling a bit heavier and leaving you craving for refreshing drinks and shade throughout the day.

June Average Humidity in Koriyama

This chart illustrates the average monthly humidity levels in Koriyama, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Koriyama is approximately 87%, 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 June generated using information from the Copernicus Climate Change Service.

June UV Index in Koriyama

In Koriyama in June, 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 June

The chart shows the monthly maximum UV Index (UVI) for Koriyama in June, 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 June, the maximum UV index in Koriyama typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111119653
Data source: Koriyama June 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 June 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 June’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 June’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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