August Weather in Isahaya, Japan

Last updated: August 23, 2025

In August, the average temperature in Isahaya, Japan reaches a warm 28°C (82°F), with minimums dipping to 21°C (69°F) and maximums soaring to 33°C (93°F). Expect significant precipitation, totaling 326 mm (12.8 in) over 14 days, contributing to a high average humidity of 94%.

August Temperature in Isahaya

In August in Isahaya, the average temperature is 28°C (82°F). Maximums can reach 33°C (93°F) and minimums can be as low as 21°C (69°F). This makes it an ideal time for travelers seeking warm weather and outdoor activities.

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

The chart illustrates August temperature patterns in Isahaya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Isahaya, August typically has an average temperature of 28°C (82°F), with highs reaching up to 33°C (93°F) and lows dropping to around 21°C (69°F).

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

August Precipitation in Isahaya

In Isahaya in August, the precipitation amount is 326 mm (12.8 in) over the course of 14 days.

August Precipitation Trends in Isahaya

The chart displays monthly precipitation patterns in Isahaya, 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 Isahaya, August typically receives around 326 mm (12.8 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Isahaya

In Isahaya in August, humidity is 94%. With an average temperature of 28°C (82°F), this humidity feels like walking through a warm, thick blanket, making travel feel sluggish and the air heavy, often leading to fatigue and the need for frequent breaks.

August Average Humidity in Isahaya

This chart illustrates the average monthly humidity levels in Isahaya, 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 Isahaya is approximately 94%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Isahaya

In Isahaya 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 Isahaya.

Maximum UV Index Levels in Isahaya for August

The chart shows the monthly maximum UV Index (UVI) for Isahaya 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 Isahaya typically reaches 12, which falls under the extreme exposure category.

Data source: Isahaya 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 Isahaya Compares to Other Months

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

This table compares monthly weather conditions in Isahaya, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	61 mm (2.4 inches)	73%	moderate
February Weather	9°C (48°F)	106 mm (4.2 inches)	69%	high
March Weather	12°C (54°F)	157 mm (6.2 inches)	71%	very high
April Weather	15°C (60°F)	143 mm (5.6 inches)	79%	extreme
May Weather	19°C (67°F)	229 mm (9.0 inches)	87%	extreme
June Weather	22°C (73°F)	272 mm (10.7 inches)	91%	extreme
July Weather	26°C (79°F)	442 mm (17.4 inches)	97%	extreme
August Weather	28°C (82°F)	326 mm (12.8 inches)	94%	extreme
September Weather	25°C (77°F)	225 mm (8.9 inches)	84%	extreme
October Weather	20°C (69°F)	117 mm (4.6 inches)	79%	very high
November Weather	15°C (60°F)	81 mm (3.2 inches)	75%	high
December Weather	10°C (51°F)	92 mm (3.6 inches)	72%	moderate