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April Weather in Otawara, Japan

Last updated: August 23, 2025

In Otawara, Japan, the average temperature in April hovers around 12°C (55°F), with extremes ranging from a chilly -1°C (30°F) to a warm 28°C (83°F). Visitors can expect an average precipitation of 127 mm (5.0 in) spread over about 12 days, contributing to a humidity level of approximately 78%.

April Temperature in Otawara

In April in Otawara, the average temperature is 12°C (55°F). Maximums can reach 28°C (83°F) and minimums can drop as low as -1°C (30°F). This makes it a perfect time for travelers to enjoy a variety of outdoor activities while also being prepared for cooler evenings.

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

The chart illustrates April temperature patterns in Otawara, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Otawara, April typically has an average temperature of 12°C (55°F), with highs reaching up to 28°C (83°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec384046546470767971625142
Data source: Temperature data for Otawara 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 Otawara

In Otawara in April, the precipitation amount is 127 mm (5.0 in) occurring over the course of 12 days.

April Precipitation Trends in Otawara

The chart displays monthly precipitation patterns in Otawara, 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 Otawara, April typically receives around 127 mm (5.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec40421351271421482551891762255653
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Otawara

In Otawara in April humidity is 78%. With average temperature 12°C (55°F), this humidity feels like a damp chill that wraps around you, making outdoor activities less enjoyable and travel a bit uncomfortable unless you're layered appropriately.

April Average Humidity in Otawara

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

In Otawara in April, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Otawara.

Maximum UV Index Levels in Otawara for April

The chart shows the monthly maximum UV Index (UVI) for Otawara 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 Otawara typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111119753
Data source: Otawara 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 Otawara Compares to Other Months

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

This table compares monthly weather conditions in Otawara, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)40 mm (1.6 inches)88%moderate
February Weather4°C (40°F)42 mm (1.6 inches)86%moderate
March Weather8°C (47°F)134 mm (5.3 inches)81%high
April Weather12°C (55°F)127 mm (5.0 inches)78%very high
May Weather18°C (64°F)142 mm (5.6 inches)81%very high
June Weather21°C (70°F)148 mm (5.8 inches)88%extreme
July Weather25°C (76°F)255 mm (10.0 inches)92%extreme
August Weather26°C (80°F)189 mm (7.5 inches)92%extreme
September Weather22°C (72°F)176 mm (6.9 inches)89%very high
October Weather16°C (62°F)225 mm (8.9 inches)87%high
November Weather11°C (52°F)56 mm (2.2 inches)85%moderate
December Weather5°C (42°F)53 mm (2.1 inches)86%moderate

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