July Weather in Iwanai, Japan

Last updated: August 23, 2025

In Iwanai, Japan, the average temperature in July hovers around 20°C (68°F), with a minimum of 10°C (51°F) and a maximum reaching 30°C (86°F). Expect 94 mm (3.7 in) of precipitation spread over 11 days, accompanied by a high average humidity of 93%.

July Temperature in Iwanai

In July in Iwanai, the average temperature is 20°C (68°F), with maximums reaching 30°C (86°F) and minimums dropping as low as 10°C (51°F). This mild climate makes it an ideal time for exploring outdoor activities and sightseeing in Iwanai.

July Weather in Iwanai: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Iwanai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iwanai, July typically has an average temperature of 20°C (68°F), with highs reaching up to 30°C (86°F) and lows dropping to around 10°C (51°F).

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

July Precipitation in Iwanai

In Iwanai in July, the precipitation amount is 94 mm (3.7 in) over the course of 11 days.

July Precipitation Trends in Iwanai

The chart displays monthly precipitation patterns in Iwanai, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Iwanai, July typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Iwanai

In Iwanai in July, humidity is 93%. With an average temperature of 20°C (68°F), this humidity feels like a warm, thick blanket wrapping around you, making travel feel sluggish and sticky, often leaving you yearning for a cool breeze.

July Average Humidity in Iwanai

This chart illustrates the average monthly humidity levels in Iwanai, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Iwanai is approximately 93%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Iwanai

In Iwanai in July, 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 Iwanai.

Maximum UV Index Levels in Iwanai for July

The chart shows the monthly maximum UV Index (UVI) for Iwanai in July, 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 July, the maximum UV index in Iwanai typically reaches 9, which falls under the very high exposure category.

Data source: Iwanai July 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 July Weather in Iwanai Compares to Other Months

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

This table compares monthly weather conditions in Iwanai, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	99 mm (3.9 inches)	84%	low
February Weather	-3°C (26°F)	103 mm (4.1 inches)	83%	moderate
March Weather	1°C (34°F)	98 mm (3.8 inches)	81%	moderate
April Weather	5°C (41°F)	88 mm (3.4 inches)	81%	high
May Weather	11°C (53°F)	86 mm (3.4 inches)	86%	very high
June Weather	15°C (59°F)	109 mm (4.3 inches)	87%	very high
July Weather	20°C (68°F)	94 mm (3.7 inches)	93%	very high
August Weather	21°C (70°F)	145 mm (5.7 inches)	95%	very high
September Weather	18°C (64°F)	126 mm (5.0 inches)	88%	very high
October Weather	12°C (53°F)	149 mm (5.9 inches)	83%	moderate
November Weather	5°C (41°F)	176 mm (6.9 inches)	79%	moderate
December Weather	-2°C (29°F)	159 mm (6.3 inches)	80%	low