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August Weather in Niiza, Japan

Last updated: August 23, 2025

In August, the average temperature in Niiza, Japan is a warm 28°C (82°F), with temperatures ranging from a cool 17°C (62°F) to a scorching 37°C (99°F). Expect a fair amount of rain, with an average precipitation of 133 mm (5.3 in) over 17 days. The air is quite humid, with an average humidity level of 90%, creating a tropical atmosphere.

August Temperature in Niiza

In August in Niiza, the average temperature is 28°C (82°F). Maximums can reach 37°C (99°F), while minimums can drop to as low as 17°C (62°F). It's an ideal time for travelers seeking warm weather and pleasant conditions for outdoor activities.

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

The chart illustrates August temperature patterns in Niiza, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Niiza, August typically has an average temperature of 28°C (82°F), with highs reaching up to 37°C (99°F) and lows dropping to around 17°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec394250576672788274645444
Data source: Temperature data for Niiza 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 Niiza

In Niiza in August, the total precipitation amount is 133 mm (5.3 in) spread over 17 days.

August Precipitation Trends in Niiza

The chart displays monthly precipitation patterns in Niiza, 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 Niiza, August typically receives around 133 mm (5.3 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec47501441261171682521332012916955
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Niiza

In Niiza in August, humidity is 90%. With an average temperature of 28°C (82°F), this humidity feels like a heavy blanket enveloping you, making travel feel stifling and exhausting, as each step feels laborious and sweat clings to your skin.

August Average Humidity in Niiza

This chart illustrates the average monthly humidity levels in Niiza, 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 Niiza is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%74%70%74%82%88%93%90%86%83%80%78%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Niiza

In Niiza 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 Niiza.

Maximum UV Index Levels in Niiza for August

The chart shows the monthly maximum UV Index (UVI) for Niiza 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 Niiza typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35891111111110754
Data source: Niiza 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 Niiza Compares to Other Months

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

This table compares monthly weather conditions in Niiza, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)47 mm (1.8 inches)76%moderate
February Weather6°C (42°F)50 mm (2.0 inches)74%moderate
March Weather10°C (50°F)144 mm (5.7 inches)70%very high
April Weather14°C (57°F)126 mm (5.0 inches)74%very high
May Weather19°C (67°F)117 mm (4.6 inches)81%extreme
June Weather22°C (72°F)168 mm (6.6 inches)88%extreme
July Weather26°C (79°F)252 mm (9.9 inches)93%extreme
August Weather28°C (82°F)133 mm (5.3 inches)90%extreme
September Weather23°C (74°F)201 mm (7.9 inches)86%very high
October Weather18°C (64°F)291 mm (11.4 inches)83%high
November Weather12°C (55°F)69 mm (2.7 inches)80%moderate
December Weather7°C (44°F)55 mm (2.2 inches)78%moderate

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