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April Weather in Kasamatsucho, Japan

Last updated: August 23, 2025

In Kasamatsucho, Japan, the average temperature in April hovers around 14°C (58°F). During this time, you can expect a minimum chill of -1°C (31°F) and the pleasant warmth of a maximum of 29°C (84°F). Precipitation is quite notable, with approximately 163 mm (6.4 in) of rain over 10 days, while the average humidity remains high at 76%.

April Temperature in Kasamatsucho

In April in Kasamatsucho, the average temperature is 14°C (58°F). Maximums can reach 29°C (84°F) and minimums can drop as low as -1°C (31°F). This fluctuation in temperature makes it essential to pack layers for your trip.

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

The chart illustrates April temperature patterns in Kasamatsucho, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kasamatsucho, April typically has an average temperature of 14°C (58°F), with highs reaching up to 29°C (84°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec414250586773808476665545
Data source: Temperature data for Kasamatsucho 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 Kasamatsucho

In Kasamatsucho in April, the total precipitation amount is 163 mm (6.4 in) recorded over the course of 10 days.

April Precipitation Trends in Kasamatsucho

The chart displays monthly precipitation patterns in Kasamatsucho, 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 Kasamatsucho, April typically receives around 163 mm (6.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec52591511631961963842532252466168
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Kasamatsucho

In Kasamatsucho in April humidity is 76%. With an average temperature of 14°C (58°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel sticky and draining, and prompting travelers to seek shade and stay hydrated often.

April Average Humidity in Kasamatsucho

This chart illustrates the average monthly humidity levels in Kasamatsucho, 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 Kasamatsucho is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%74%76%83%87%93%91%87%85%83%83%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Kasamatsucho

In Kasamatsucho in April, 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 Kasamatsucho.

Maximum UV Index Levels in Kasamatsucho for April

The chart shows the monthly maximum UV Index (UVI) for Kasamatsucho 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 Kasamatsucho typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110753
Data source: Kasamatsucho 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 Kasamatsucho Compares to Other Months

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

This table compares monthly weather conditions in Kasamatsucho, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)52 mm (2.0 inches)82%moderate
February Weather6°C (42°F)59 mm (2.3 inches)79%high
March Weather10°C (50°F)151 mm (6.0 inches)74%very high
April Weather14°C (58°F)163 mm (6.4 inches)76%very high
May Weather19°C (67°F)196 mm (7.7 inches)83%extreme
June Weather23°C (74°F)196 mm (7.7 inches)87%extreme
July Weather27°C (81°F)384 mm (15.1 inches)93%extreme
August Weather29°C (84°F)253 mm (10.0 inches)91%extreme
September Weather25°C (76°F)225 mm (8.9 inches)87%very high
October Weather19°C (66°F)246 mm (9.7 inches)85%high
November Weather13°C (55°F)61 mm (2.4 inches)83%moderate
December Weather7°C (45°F)68 mm (2.7 inches)83%moderate

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