April Weather in Kainan, Japan

Last updated: August 23, 2025

In April, the average temperature in Kainan, Japan is a pleasant 14°C (58°F), with temperatures ranging from a cool 4°C (39°F) to a warm 23°C (73°F). Expect around 128 mm (5.1 in) of precipitation spread over 10 days, accompanied by an average humidity of 76%. Perfect conditions for exploring the beauty of the season!

April Temperature in Kainan

In April in Kainan, the average temperature is 14°C (58°F). The maximum can reach 23°C (73°F), and the minimum can be as low as 4°C (39°F). This makes it a great time for travelers to enjoy pleasant weather while exploring the sights.

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

The chart illustrates April temperature patterns in Kainan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kainan, April typically has an average temperature of 14°C (58°F), with highs reaching up to 23°C (73°F) and lows dropping to around 4°C (39°F).

Data source: Temperature data for Kainan generated using information from the Copernicus Climate Change Service.

April Precipitation in Kainan

In Kainan in April, the precipitation amount is 128 mm (5.1 in) spread over a period of 10 days.

April Precipitation Trends in Kainan

The chart displays monthly precipitation patterns in Kainan, 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 Kainan, April typically receives around 128 mm (5.1 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in Kainan

In Kainan 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 Kainan

This chart illustrates the average monthly humidity levels in Kainan, 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 Kainan is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Kainan

In Kainan 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 Kainan.

Maximum UV Index Levels in Kainan for April

The chart shows the monthly maximum UV Index (UVI) for Kainan 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 Kainan typically reaches 11, which falls under the extreme exposure category.

Data source: Kainan 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 Kainan Compares to Other Months

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

This table compares monthly weather conditions in Kainan, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (44°F)	63 mm (2.5 inches)	82%	moderate
February Weather	7°C (44°F)	76 mm (3.0 inches)	79%	moderate
March Weather	10°C (51°F)	115 mm (4.5 inches)	74%	very high
April Weather	14°C (58°F)	128 mm (5.1 inches)	76%	extreme
May Weather	19°C (67°F)	164 mm (6.5 inches)	83%	extreme
June Weather	22°C (72°F)	199 mm (7.8 inches)	87%	extreme
July Weather	26°C (80°F)	302 mm (11.9 inches)	93%	extreme
August Weather	28°C (83°F)	178 mm (7.0 inches)	91%	extreme
September Weather	25°C (77°F)	203 mm (8.0 inches)	87%	very high
October Weather	20°C (67°F)	267 mm (10.5 inches)	85%	high
November Weather	14°C (57°F)	63 mm (2.5 inches)	83%	moderate
December Weather	9°C (48°F)	76 mm (3.0 inches)	83%	moderate