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April Weather in Osaki, Japan

Last updated: August 23, 2025

In Osaki, Japan, the average temperature in April hovers around 10°C (51°F). Expect a chilly minimum of -1°C (31°F) and a pleasant maximum reaching 26°C (79°F). During this month, you can anticipate about 111 mm (4.4 in) of precipitation over 12 days, with an average humidity of 75%. Prepare accordingly to enjoy all that the season has to offer!

April Temperature in Osaki

In April in Osaki, the average temperature is 10°C (51°F). The maximum can reach 26°C (79°F) and the minimum can be as low as -1°C (31°F). This variation makes it essential for travelers to pack layers to accommodate both warm and chilly conditions.

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

The chart illustrates April temperature patterns in Osaki, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Osaki, April typically has an average temperature of 10°C (51°F), with highs reaching up to 26°C (79°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec353743516167757770604939
Data source: Temperature data for Osaki 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 Osaki

In Osaki, in April, the precipitation amount is 111 mm (4.4 in) over a span of 12 days.

April Precipitation Trends in Osaki

The chart displays monthly precipitation patterns in Osaki, 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 Osaki, April typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec55471091111051062142161381984162
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Osaki

In Osaki in April humidity is 75%. With an average temperature of 10°C (51°F), this humidity feels like a heavy blanket wrapping around you, making every step outside feel laborious and damp, perfect for cozy indoor exploration but challenging for outdoor adventures.

April Average Humidity in Osaki

This chart illustrates the average monthly humidity levels in Osaki, 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 Osaki is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%77%75%80%87%92%92%86%82%79%80%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Osaki

In Osaki in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Osaki.

Maximum UV Index Levels in Osaki for April

The chart shows the monthly maximum UV Index (UVI) for Osaki 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 Osaki typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3478101011119643
Data source: Osaki 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 Osaki Compares to Other Months

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

This table compares monthly weather conditions in Osaki, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)55 mm (2.1 inches)80%moderate
February Weather3°C (37°F)47 mm (1.9 inches)79%moderate
March Weather6°C (43°F)109 mm (4.3 inches)77%high
April Weather10°C (51°F)111 mm (4.4 inches)75%very high
May Weather16°C (62°F)105 mm (4.1 inches)80%very high
June Weather20°C (68°F)105 mm (4.2 inches)87%very high
July Weather24°C (75°F)214 mm (8.4 inches)92%extreme
August Weather25°C (78°F)216 mm (8.5 inches)92%extreme
September Weather21°C (71°F)138 mm (5.4 inches)86%very high
October Weather16°C (61°F)198 mm (7.8 inches)82%high
November Weather10°C (50°F)41 mm (1.6 inches)79%moderate
December Weather4°C (39°F)62 mm (2.4 inches)80%moderate

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