July weather forecast
Nagoya, Japan

July sees the continuation of Nagoya's hot and humid summer, characterized by high rainfall. Daytime temperatures peak, reaching up to 30.8°C (87.4°F) on average. Despite humidity, it serves as a pleasant time for visitors to explore the city and its outskirts. Massive downpours are common, but the city often enjoys brief moments of sunshine in between. While rainfall remains high, evening temperatures drop slightly, offering a respite from the heat.

Temperature

As Nagoya enters July, the average high-temperature marginally increases from the a moderately hot 27.2°C (81°F) of June to a tropical 30.8°C (87.4°F). During July, Nagoya consistently records a temperature low averaging a warm 23°C (73.4°F).

Heat index

The heat index value during July is calculated to be a sweltering 38°C (100.4°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

With an average relative humidity of 74%, July is the most humid month.

Rainfall

In July, the rain falls for 13 days. Throughout July, 204mm (8.03") of precipitation is accumulated. Throughout the year, in Nagoya, Japan, there are 116.3 rainfall days, and 1535mm (60.43") of precipitation is accumulated.

Snowfall

In Nagoya, snow does not fall in March through November.

Sea temperature

In Nagoya, in July, the average water temperature is 26°C (78.8°F).
Note: For activities in the water such as swimming or diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal for prolonged enjoyment without discomfort.

Daylight

The average length of the day in July in Nagoya is 14h and 16min.
On the first day of July, sunrise is at 04:41 and sunset at 19:10. On the last day of the month, sunrise is at 05:00 and sunset at 18:56 JST.

Sunshine

In Nagoya, Japan, the average sunshine in July is 5.3h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 10. A UV Index value of 8 to 10 symbolizes a very high health hazard from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 10 in July leads to these recommendations:
Take the necessary steps to protect yourself; unprotected skin and eyes are vulnerable to damage. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. After a swim or outdoor exercise, one should liberally reapply broad-spectrum sunscreen with a sun protection factor of 30 or higher. Caution! Sand and water reflections can notably increase the UV radiation intensity.