July weather forecast
Fukuoka, Japan

The intensified weather in Fukuoka during July marks the peak of summer. Traditional street celebrations are frequent, in spite of the high heat and increased rainfall. The city witnesses a surge in temperature, soaring to a whopping 30.7°C (87.3°F). Sea temperatures also rise, making beach-related activities full of fun. The transition into August promises continued hot weather, albeit with reduced rainfall.

Temperature

A subtle rise in the average high-temperature is observed in Fukuoka during July, adjusting from a warm 26.5°C (79.7°F) in June to a tropical 30.7°C (87.3°F). During the month of July, Fukuoka's nighttime temperature lowers to an average of 24°C (75.2°F).

Heat index

July's heat index is calculated to be a very hot 38°C (100.4°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold great significance to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In July, the average relative humidity in Fukuoka is 75%.

Rainfall

In July, the rain falls for 11.9 days. Throughout July, 266mm (10.47") of precipitation is accumulated. In Fukuoka, Japan, during the entire year, the rain falls for 128.6 days and collects up to 1632mm (64.25") of precipitation.

Snowfall

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

Sea temperature

In July, the average sea temperature is 25.4°C (77.7°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.

Daylight

In Fukuoka, the average length of the day in July is 14h and 8min.
On the first day of the month, sunrise is at 05:11 and sunset at 19:32. On the last day of July, sunrise is at 05:30 and sunset at 19:19 JST.

Sunshine

In July, the average sunshine is 5.9h.

UV index

The month with the highest UV index in Fukuoka is July, with an average maximum UV index of 11. A UV Index reading of 11, and higher, represents an excessive health risk from unsafe exposure to UV radiation for the average person.
Note: In July, the maximum UV index of 11 suggests this advice:
Put into effect every precaution of importance, unprotected skin and eyes may get burns swiftly. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Despite the clouds, sunscreen with an SPF of at least 30 should be used liberally and reapplied frequently, especially after a swim or outdoor workout. Attention! The reflection of both water and sand can increase the intensity of UV rays.