July weather forecastTokyo, Japan

Weather in July

July is the peak of summer in Tokyo, bringing the city's highest temperatures. With the temperature soaring to a high of 29.3°C (84.7°F), the days can get pretty hot in the sprawling urban landscape. However, as July rolls on, the frequency of rain gradually decreases, providing respite from the hot weather. Despite high temperatures, locals go about their daily activities, often relishing a cold matcha drink to beat the heat. July is an excellent month for those who enjoy vacations in typically sunny, summer weather.

Temperature

July's arrival in Tokyo coincides with a subtle temperature rise, moving from June's warm 25.1°C (77.2°F) to a still moderately hot 29.3°C (84.7°F). July's nights in Tokyo, Japan, observe an average temperature of 23.3°C (73.9°F).

Heat index

The heat index in July is appraised at a fiery hot 35°C (95°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Understand that the heat index values take into account shaded locations and mild winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

July is the most humid month, with an average relative humidity of 77%.

Rainfall

In July, the rain falls for 12.2 days. Throughout July, 48mm (1.89") of precipitation is accumulated. Throughout the year, there are 134.5 rainfall days, and 425mm (16.73") of precipitation is accumulated.

Snowfall

In Tokyo, snow does not fall in April through December.

Sea temperature

In July, the average sea temperature is 24.2°C (75.6°F).
Note: If you're wary of the cold, the surrounding conditions—sunshine, wind, and air temperature become crucial when swimming in 24.2°C (75.6°F) waters. Olympic standards, for reference, are set between 25°C (77°F) and 28°C (82.4°F).

Daylight

The average length of the day in July is 14h and 19min.
On the first day of July, sunrise is at 04:28 and sunset at 19:01. On the last day of the month, sunrise is at 04:48 and sunset at 18:46 JST.

Sunshine

In Tokyo, the average sunshine in July is 9.6h.

UV index

The month with the highest UV index is July, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high daily UV index of 7 during July translates into the following directions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The Sun's UV intensity grows with reflections off sand and water.