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April Weather in Sumoto, Japan

Last updated: August 23, 2025

In April, the average temperature in Sumoto, Japan hovers around 14°C (57°F). Visitors can expect a range from a cool 6°C (44°F) to a comfortable 20°C (68°F). The region experiences 132 mm (5.2 in) of precipitation over approximately 8 days, contributing to an average humidity of 74%.

April Temperature in Sumoto

In April in Sumoto, the average temperature is 14°C (57°F). Maximums can reach 20°C (68°F) and minimums can be as low as 6°C (44°F). This mild weather makes Sumoto an ideal destination for outdoor activities and sightseeing during this time of year.

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

The chart illustrates April temperature patterns in Sumoto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumoto, April typically has an average temperature of 14°C (57°F), with highs reaching up to 20°C (68°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec464651576470778176686051
Data source: Temperature data for Sumoto 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 Sumoto

In Sumoto in April, the total precipitation amount is 132 mm (5.2 in), which occurs over the span of 8 days.

April Precipitation Trends in Sumoto

The chart displays monthly precipitation patterns in Sumoto, 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 Sumoto, April typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec65741171331711922911542062926883
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Sumoto

In Sumoto in April, humidity is 74%. With an average temperature of 14°C (57°F), this humidity feels like a warm, damp blanket wrapping around you, making it slightly uncomfortable for traveling, as you may find yourself quickly sweating and in need of frequent breaks to cool down.

April Average Humidity in Sumoto

This chart illustrates the average monthly humidity levels in Sumoto, 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 Sumoto is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%73%74%84%86%92%92%87%85%84%82%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Sumoto

In Sumoto in April, 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 Sumoto.

Maximum UV Index Levels in Sumoto for April

The chart shows the monthly maximum UV Index (UVI) for Sumoto 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 Sumoto typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458111111121110754
Data source: Sumoto 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 Sumoto Compares to Other Months

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

This table compares monthly weather conditions in Sumoto, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)65 mm (2.6 inches)82%moderate
February Weather8°C (46°F)74 mm (2.9 inches)79%moderate
March Weather10°C (51°F)117 mm (4.6 inches)73%very high
April Weather14°C (57°F)132 mm (5.2 inches)74%extreme
May Weather18°C (64°F)171 mm (6.7 inches)84%extreme
June Weather21°C (70°F)192 mm (7.5 inches)86%extreme
July Weather25°C (78°F)291 mm (11.5 inches)92%extreme
August Weather27°C (81°F)154 mm (6.1 inches)92%extreme
September Weather25°C (77°F)206 mm (8.1 inches)87%very high
October Weather20°C (69°F)292 mm (11.5 inches)85%high
November Weather16°C (60°F)68 mm (2.7 inches)84%moderate
December Weather11°C (51°F)83 mm (3.3 inches)82%moderate

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