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April Weather in Katashina, Japan

Last updated: August 23, 2025

In April, the average temperature in Katashina, Japan hovers around 7°C (45°F), providing a cool climate for visitors. Expect temperatures to range from a brisk -6°C (21°F) at night to a pleasant 23°C (75°F) during the day. Keep your umbrella handy, as 134 mm (5.3 in) of precipitation is expected over 15 days, complemented by an average humidity of 78%.

April Temperature in Katashina

In April in Katashina, the average temperature is 7°C (45°F). Maximums can reach 23°C (75°F) and minimums can be as low as -6°C (21°F). This fluctuating climate makes it essential for travelers to pack layers to accommodate both warm and cold conditions.

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

The chart illustrates April temperature patterns in Katashina, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Katashina, April typically has an average temperature of 7°C (45°F), with highs reaching up to 23°C (75°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec272837455662697264544332
Data source: Temperature data for Katashina 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 Katashina

In Katashina in April, the total precipitation amount is 134 mm (5.3 in) spread over a period of 15 days.

April Precipitation Trends in Katashina

The chart displays monthly precipitation patterns in Katashina, 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 Katashina, April typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec81781361341461832942111892466593
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Katashina

In Katashina in April, humidity is 78%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less enjoyable and necessitating cozy, layered clothing for comfort while traveling.

April Average Humidity in Katashina

This chart illustrates the average monthly humidity levels in Katashina, 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 Katashina is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%81%79%81%88%92%92%89%87%85%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Katashina

In Katashina 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 Katashina.

Maximum UV Index Levels in Katashina for April

The chart shows the monthly maximum UV Index (UVI) for Katashina 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 Katashina typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101111111110753
Data source: Katashina 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 Katashina Compares to Other Months

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

This table compares monthly weather conditions in Katashina, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)80 mm (3.2 inches)88%moderate
February Weather-2°C (29°F)78 mm (3.1 inches)86%high
March Weather3°C (37°F)136 mm (5.4 inches)81%very high
April Weather7°C (45°F)134 mm (5.3 inches)78%very high
May Weather13°C (56°F)146 mm (5.7 inches)81%extreme
June Weather17°C (62°F)183 mm (7.2 inches)88%extreme
July Weather21°C (70°F)294 mm (11.6 inches)92%extreme
August Weather22°C (72°F)211 mm (8.3 inches)92%extreme
September Weather18°C (64°F)189 mm (7.5 inches)89%very high
October Weather12°C (54°F)246 mm (9.7 inches)87%high
November Weather6°C (43°F)65 mm (2.6 inches)85%moderate
December Weather0°C (32°F)93 mm (3.7 inches)86%moderate

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