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April Weather in Shiroishi, Japan

Last updated: August 23, 2025

In Shiroishi, Japan, the average temperature in April is a cool 9°C (49°F). Expect a range where the minimum can dip to -2°C (28°F) and the maximum may soar to 26°C (79°F). With 109 mm (4.3 in) of precipitation spread over 13 days, you might want to keep an umbrella handy. The air holds a moderate humidity level of 73%, adding to the overall climate feel of the month.

April Temperature in Shiroishi

In April in Shiroishi, the average temperature is 9°C (49°F). Maximums can reach 26°C (79°F), and minimums can drop as low as -2°C (28°F). Be prepared for a wide range of temperatures when traveling during this month.

April Weather in Shiroishi: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Shiroishi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shiroishi, April typically has an average temperature of 9°C (49°F), with highs reaching up to 26°C (79°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec313241496066737668574636
Data source: Temperature data for Shiroishi 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.

April Precipitation in Shiroishi

In Shiroishi in April, the precipitation amount is 109 mm (4.3 in), which occurs during 13 days.

April Precipitation Trends in Shiroishi

The chart displays monthly precipitation patterns in Shiroishi, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Shiroishi, April typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec79691121091061002451831401944687
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Shiroishi

In Shiroishi in April, humidity is 73%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill in the air, making outdoor activities slightly uncomfortable and requiring extra layers for warmth while traveling.

April Average Humidity in Shiroishi

This chart illustrates the average monthly humidity levels in Shiroishi, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Shiroishi is approximately 73%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Shiroishi

In Shiroishi in April, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Shiroishi.

Maximum UV Index Levels in Shiroishi for April

The chart shows the monthly maximum UV Index (UVI) for Shiroishi in April, 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 April, the maximum UV index in Shiroishi typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101011119643
Data source: Shiroishi April 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 April Weather in Shiroishi Compares to Other Months

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

This table compares monthly weather conditions in Shiroishi, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)79 mm (3.1 inches)76%moderate
February Weather0°C (33°F)69 mm (2.7 inches)75%moderate
March Weather5°C (41°F)112 mm (4.4 inches)72%high
April Weather9°C (49°F)109 mm (4.3 inches)73%very high
May Weather16°C (60°F)106 mm (4.2 inches)80%very high
June Weather19°C (66°F)100 mm (3.9 inches)87%very high
July Weather23°C (74°F)245 mm (9.6 inches)92%extreme
August Weather24°C (76°F)183 mm (7.2 inches)90%extreme
September Weather20°C (68°F)140 mm (5.5 inches)84%very high
October Weather14°C (58°F)194 mm (7.6 inches)80%high
November Weather8°C (47°F)46 mm (1.8 inches)77%moderate
December Weather2°C (36°F)87 mm (3.4 inches)77%moderate

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