April Weather in Sasayama, Japan

Last updated: August 23, 2025

In April, the average temperature in Sasayama, Japan hovers around 13°C (56°F), with lows dipping to 0°C (33°F) and highs reaching up to 26°C (78°F). This month also sees about 141 mm (5.6 in) of precipitation spread over 10 days, contributing to an average humidity of 76%.

April Temperature in Sasayama

In April in Sasayama, the average temperature is 13°C (56°F), with maximums reaching up to 26°C (78°F) and minimums dropping as low as 0°C (33°F). This makes it a great time to explore Sasayama, as you can enjoy mild weather while being prepared for cooler evenings.

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

The chart illustrates April temperature patterns in Sasayama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sasayama, April typically has an average temperature of 13°C (56°F), with highs reaching up to 26°C (78°F) and lows dropping to around 0°C (33°F).

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

April Precipitation in Sasayama

In Sasayama in April, the total precipitation amount is 141 mm (5.6 in) over a period of 10 days.

April Precipitation Trends in Sasayama

The chart displays monthly precipitation patterns in Sasayama, 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 Sasayama, April typically receives around 141 mm (5.6 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 Sasayama

In Sasayama in April humidity is 76%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket enveloping you, making travel a bit uncomfortable as you navigate through the heavy, moisture-laden air.

April Average Humidity in Sasayama

This chart illustrates the average monthly humidity levels in Sasayama, 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 Sasayama 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 Sasayama

In Sasayama 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 Sasayama.

Maximum UV Index Levels in Sasayama for April

The chart shows the monthly maximum UV Index (UVI) for Sasayama 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 Sasayama typically reaches 10, which falls under the very high exposure category.

Data source: Sasayama 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 Sasayama Compares to Other Months

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

This table compares monthly weather conditions in Sasayama, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	46 mm (1.8 inches)	82%	moderate
February Weather	5°C (41°F)	59 mm (2.3 inches)	79%	high
March Weather	9°C (49°F)	111 mm (4.4 inches)	74%	very high
April Weather	13°C (56°F)	141 mm (5.6 inches)	76%	very high
May Weather	19°C (66°F)	140 mm (5.5 inches)	83%	extreme
June Weather	22°C (72°F)	147 mm (5.8 inches)	87%	extreme
July Weather	26°C (79°F)	327 mm (12.9 inches)	93%	extreme
August Weather	28°C (82°F)	223 mm (8.8 inches)	91%	extreme
September Weather	23°C (75°F)	205 mm (8.1 inches)	87%	very high
October Weather	18°C (65°F)	230 mm (9.1 inches)	85%	high
November Weather	12°C (54°F)	43 mm (1.7 inches)	83%	moderate
December Weather	6°C (44°F)	60 mm (2.4 inches)	83%	moderate