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April Weather in Osaki, Japan

Last updated: August 23, 2025

In April, the average temperature in Osaki, Japan hovers around 16°C (62°F). Expect a range from a brisk 4°C (40°F) to a warm 27°C (81°F). During this time, you might encounter 142 mm (5.6 in) of precipitation spread over 10 days, contributing to an average humidity of 79%. Embrace the cozy ambiance of this time of year!

April Temperature in Osaki

In April in Osaki, the average temperature is 16°C (62°F). Maximums can reach 27°C (81°F), while minimums can drop as low as 4°C (40°F). This makes it an ideal time for travelers to enjoy a comfortable climate with the opportunity for both warm and cooler experiences.

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 16°C (62°F), with highs reaching up to 27°C (81°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec464855616873808277705949
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 total precipitation amount is 142 mm (5.6 in) over the course of 10 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 142 mm (5.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec551061781422514083782292891709679
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 79%. With an average temperature of 16°C (62°F), this humidity feels like a warm, enveloping blanket that makes walking outdoors feel languid and heavy, demanding frequent breaks and plenty of water as you navigate the bustling streets.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%68%72%79%83%86%90%85%80%78%76%75%
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 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 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5610101212121311865
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 Weather8°C (46°F)55 mm (2.2 inches)72%moderate
February Weather9°C (48°F)105 mm (4.2 inches)68%high
March Weather13°C (55°F)178 mm (7.0 inches)72%very high
April Weather16°C (62°F)142 mm (5.6 inches)79%very high
May Weather20°C (69°F)251 mm (9.9 inches)83%extreme
June Weather23°C (74°F)408 mm (16.0 inches)86%extreme
July Weather27°C (80°F)378 mm (14.9 inches)90%extreme
August Weather28°C (82°F)229 mm (9.0 inches)85%extreme
September Weather25°C (78°F)289 mm (11.4 inches)80%extreme
October Weather21°C (70°F)170 mm (6.7 inches)78%very high
November Weather15°C (59°F)95 mm (3.8 inches)76%high
December Weather10°C (50°F)79 mm (3.1 inches)74%moderate

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