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August Weather in Tonami, Japan

Last updated: August 23, 2025

In Tonami, Japan, the average temperature in August hovers around 25°C (78°F), offering a comfortable climate. However, be prepared for a temperature range that can drop to a cool 12°C (54°F) and spike to a warm 35°C (96°F). This month also sees 321 mm (12.6 in) of precipitation spread over 24 days, contributing to a high average humidity of 92%.

August Temperature in Tonami

In August in Tonami, the average temperature is 25°C (78°F), with maximums reaching 35°C (96°F) and minimums dipping as low as 12°C (54°F). This climate makes it an ideal destination for travelers seeking pleasant weather and a range of outdoor activities.

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

The chart illustrates August temperature patterns in Tonami, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tonami, August typically has an average temperature of 25°C (78°F), with highs reaching up to 35°C (96°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec313341506167757869584737
Data source: Temperature data for Tonami 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 Tonami

In Tonami in August, the total precipitation amount is 321 mm (12.6 in), spread over 24 days.

August Precipitation Trends in Tonami

The chart displays monthly precipitation patterns in Tonami, 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 Tonami, August typically receives around 321 mm (12.6 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec205193209214170248424321285261162250
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Tonami

In Tonami in August, humidity is 92%. With an average temperature of 25°C (78°F), this humidity feels like a thick blanket wrapping around you, making travel uncomfortable and sticky as you navigate through the heat.

August Average Humidity in Tonami

This chart illustrates the average monthly humidity levels in Tonami, 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 Tonami is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%76%77%85%89%93%92%84%81%77%79%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Tonami

In Tonami in August, 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 Tonami.

Maximum UV Index Levels in Tonami for August

The chart shows the monthly maximum UV Index (UVI) for Tonami 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 Tonami typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110753
Data source: Tonami 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 Tonami Compares to Other Months

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

This table compares monthly weather conditions in Tonami, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)204 mm (8.1 inches)80%moderate
February Weather0°C (33°F)193 mm (7.6 inches)78%high
March Weather5°C (41°F)209 mm (8.2 inches)76%very high
April Weather10°C (51°F)214 mm (8.4 inches)77%very high
May Weather16°C (62°F)170 mm (6.7 inches)85%extreme
June Weather20°C (67°F)248 mm (9.8 inches)89%extreme
July Weather24°C (76°F)424 mm (16.7 inches)93%extreme
August Weather25°C (78°F)321 mm (12.6 inches)92%extreme
September Weather21°C (70°F)285 mm (11.2 inches)84%very high
October Weather15°C (59°F)261 mm (10.3 inches)81%high
November Weather8°C (47°F)162 mm (6.4 inches)77%moderate
December Weather3°C (37°F)250 mm (9.8 inches)79%moderate

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