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June Weather in Iwaki, Japan

Last updated: August 23, 2025

In Iwaki, Japan, the average temperature in June reaches a pleasant 19°C (66°F). Expect a minimum of 13°C (56°F) and a maximum of 26°C (78°F) throughout the month. However, be prepared for precipitation totaling 136 mm (5.3 in) over approximately 12 days, contributing to an average humidity of a humid 87%.

June Temperature in Iwaki

In June in Iwaki, the average temperature is 19°C (66°F). Maximum temperatures can reach 26°C (78°F), while minimums can drop to as low as 13°C (56°F). This mild climate makes Iwaki an ideal destination for travelers seeking pleasant outdoor activities.

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

The chart illustrates June 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, June typically has an average temperature of 19°C (66°F), with highs reaching up to 26°C (78°F) and lows dropping to around 13°C (56°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.

June Precipitation in Iwaki

In Iwaki in June, the precipitation amount is 136 mm (5.3 in) over the course of 12 days.

June Precipitation Trends in Iwaki

The chart displays monthly precipitation patterns in Iwaki, 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 Iwaki, June typically receives around 136 mm (5.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec57451691361541362021371862718573
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Iwaki

In Iwaki in June humidity is 87%. With an average temperature of 19°C (66°F), this humidity feels like a warm blanket wrapping around you, making travel feel a bit sticky and slowing down your movements as you navigate through the area's vibrant streets.

June Average Humidity in Iwaki

This chart illustrates the average monthly humidity levels in Iwaki, 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 Iwaki 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 Iwaki

In Iwaki in June, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Iwaki.

Maximum UV Index Levels in Iwaki for June

The chart shows the monthly maximum UV Index (UVI) for Iwaki 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 Iwaki typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101011119653
Data source: Iwaki 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 Iwaki Compares to Other Months

Weather in Iwaki varies notably across the year, with each month offering distinct climate conditions. This page compares June’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 June’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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