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May Weather in Hitachi, Japan

Last updated: August 23, 2025

In Hitachi, Japan, the average temperature in May hovers around 17°C (63°F). Daytime highs can reach a pleasant 24°C (75°F), while evening lows may dip to 11°C (52°F). Expect some damp days, with 146 mm (5.7 in) of precipitation spread over 12 days and an average humidity of 80%. Perfect for cozy indoor activities or a refreshing stroll under the clouds!

May Temperature in Hitachi

In May in Hitachi, the average temperature is 17°C (63°F), with maximums reaching 24°C (75°F) and minimums dropping to as low as 11°C (52°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

May Weather in Hitachi: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Hitachi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hitachi, May typically has an average temperature of 17°C (63°F), with highs reaching up to 24°C (75°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec434449556368747873665748
Data source: Temperature data for Hitachi 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.

May Precipitation in Hitachi

In Hitachi in May, the total precipitation amount is 146 mm (5.7 in) spread over a duration of 12 days.

May Precipitation Trends in Hitachi

The chart displays monthly precipitation patterns in Hitachi, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Hitachi, May typically receives around 146 mm (5.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec59491621331461381971291722529875
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Hitachi

In Hitachi in May humidity is 80%. With an average temperature of 17°C (63°F), this humidity feels like you're walking through a thick, warm blanket, making travel feel slightly stifling and requiring frequent breaks to stay comfortable.

May Average Humidity in Hitachi

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

May UV Index in Hitachi

In Hitachi in May, 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 Hitachi.

Maximum UV Index Levels in Hitachi for May

The chart shows the monthly maximum UV Index (UVI) for Hitachi in May, 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 May, the maximum UV index in Hitachi typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109753
Data source: Hitachi May 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 May Weather in Hitachi Compares to Other Months

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

This table compares monthly weather conditions in Hitachi, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)59 mm (2.3 inches)76%moderate
February Weather7°C (44°F)49 mm (1.9 inches)75%moderate
March Weather9°C (49°F)162 mm (6.4 inches)72%high
April Weather13°C (55°F)133 mm (5.2 inches)73%very high
May Weather17°C (63°F)146 mm (5.7 inches)80%very high
June Weather20°C (69°F)138 mm (5.4 inches)87%extreme
July Weather24°C (75°F)197 mm (7.7 inches)92%extreme
August Weather26°C (78°F)129 mm (5.1 inches)90%very high
September Weather23°C (74°F)172 mm (6.8 inches)84%very high
October Weather19°C (66°F)252 mm (9.9 inches)80%high
November Weather14°C (58°F)98 mm (3.8 inches)77%moderate
December Weather9°C (48°F)75 mm (3.0 inches)77%moderate

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