July Weather in Koga, Japan

Last updated: August 23, 2025

In July, the average temperature in Koga, Japan is a warm 27°C (81°F). Expect a minimum of 19°C (66°F) and a peak of 37°C (99°F). With 300 mm (11.8 in) of precipitation spread over 19 days, be prepared for some wet weather. The average humidity is a high 92%, ensuring a tropical feel throughout the month.

July Temperature in Koga

In July in Koga, the average temperature is 27°C (81°F). Maximums can reach 37°C (99°F), and minimums can be as low as 19°C (66°F). This makes it an ideal month for travelers who enjoy warm weather and outdoor activities.

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

The chart illustrates July temperature patterns in Koga, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Koga, July typically has an average temperature of 27°C (81°F), with highs reaching up to 37°C (99°F) and lows dropping to around 19°C (66°F).

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

July Precipitation in Koga

In Koga in July, the total precipitation amount reaches 300 mm (11.8 in) during a span of 19 days.

July Precipitation Trends in Koga

The chart displays monthly precipitation patterns in Koga, 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 Koga, July typically receives around 300 mm (11.8 inches) of precipitation spread over approximately 19 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 Koga

In Koga in July, humidity is 92%. With an average temperature of 27°C (81°F), this humidity feels like walking through a warm, thick blanket, making travel exhausting and sticky, as the air is laden with moisture that clings to your skin and makes even short excursions feel like a workout.

July Average Humidity in Koga

This chart illustrates the average monthly humidity levels in Koga, 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 Koga is approximately 92%, 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 Koga

In Koga in July, 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 Koga.

Maximum UV Index Levels in Koga for July

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

Data source: Koga 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 Koga Compares to Other Months

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

This table compares monthly weather conditions in Koga, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	57 mm (2.2 inches)	75%	moderate
February Weather	8°C (46°F)	71 mm (2.8 inches)	71%	high
March Weather	12°C (53°F)	120 mm (4.7 inches)	71%	very high
April Weather	16°C (60°F)	107 mm (4.2 inches)	78%	extreme
May Weather	20°C (69°F)	131 mm (5.1 inches)	84%	extreme
June Weather	24°C (75°F)	172 mm (6.8 inches)	86%	extreme
July Weather	27°C (81°F)	300 mm (11.8 inches)	92%	extreme
August Weather	29°C (84°F)	281 mm (11.1 inches)	91%	extreme
September Weather	25°C (77°F)	216 mm (8.5 inches)	84%	extreme
October Weather	20°C (68°F)	107 mm (4.2 inches)	83%	high
November Weather	14°C (58°F)	45 mm (1.8 inches)	81%	high
December Weather	9°C (48°F)	64 mm (2.5 inches)	79%	moderate