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August Weather in Yanai, Japan

Last updated: August 23, 2025

In Yanai, Japan, the average temperature in August is a warm 28°C (82°F). Expect a comfortable range where the minimum dips to 22°C (72°F) and the maximum peaks at 33°C (91°F). However, be prepared for moisture, as precipitation averages 221 mm (8.7 in) over 12 days, coupled with an average humidity of a high 91%. Stay cool and enjoy the warmth!

August Temperature in Yanai

In August in Yanai, the average temperature is 28°C (82°F). Maximum can reach 33°C (91°F), and minimum can be as low as 22°C (72°F). This pleasant climate makes Yanai an ideal destination for travelers seeking warm weather and outdoor activities.

August Weather in Yanai: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Yanai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yanai, August typically has an average temperature of 28°C (82°F), with highs reaching up to 33°C (91°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec454551576571798276685849
Data source: Temperature data for Yanai 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.

August Precipitation in Yanai

In Yanai in August, the precipitation amount is 221 mm (8.7 in) over the course of 12 days.

August Precipitation Trends in Yanai

The chart displays monthly precipitation patterns in Yanai, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Yanai, August typically receives around 221 mm (8.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec54791271461591893562212151744364
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Yanai

In Yanai in August humidity is 91%. With an average temperature of 28°C (82°F), this humidity feels like a thick blanket wrapping around you, making each step feel heavy and every breath slightly more laborious, which can be quite challenging for traveling.

August Average Humidity in Yanai

This chart illustrates the average monthly humidity levels in Yanai, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Yanai is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%71%71%78%84%86%92%91%84%83%81%79%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Yanai

In Yanai in August, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Yanai.

Maximum UV Index Levels in Yanai for August

The chart shows the monthly maximum UV Index (UVI) for Yanai in August, 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 August, the maximum UV index in Yanai typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458111111121210764
Data source: Yanai August 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 August Weather in Yanai Compares to Other Months

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

This table compares monthly weather conditions in Yanai, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)54 mm (2.1 inches)75%moderate
February Weather7°C (45°F)79 mm (3.1 inches)71%moderate
March Weather11°C (51°F)127 mm (5.0 inches)71%very high
April Weather14°C (58°F)146 mm (5.7 inches)78%extreme
May Weather18°C (65°F)159 mm (6.3 inches)84%extreme
June Weather22°C (72°F)189 mm (7.5 inches)86%extreme
July Weather26°C (79°F)355 mm (14.0 inches)92%extreme
August Weather28°C (82°F)221 mm (8.7 inches)91%extreme
September Weather24°C (76°F)215 mm (8.5 inches)84%very high
October Weather20°C (68°F)173 mm (6.8 inches)83%high
November Weather15°C (59°F)43 mm (1.7 inches)81%high
December Weather9°C (49°F)64 mm (2.5 inches)79%moderate

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