June weather forecast
Fukuoka, Japan

The arrival of summer is clearly felt in Fukuoka during June, with the rise in heat, humidity, and rainfall. Festive vibes permeate the city during some of its most significant traditional summer festivals, despite the humidity. The highest rainfall levels of the year, 272mm (10.71"), engulf the city during this time, doubling the May count. The peak of the daylight hours make this an ideal month for sightseeing, if the rainfall is tolerable. As July approaches, Fukuoka expects the continuation of the rainy season paired with hotter temperatures.

Temperature

As June begins in Fukuoka, Japan, there's a slight increase in the average high-temperature, moving from 23.5°C (74.3°F) in May to a still moderately hot 26.5°C (79.7°F). Fukuoka observes an average low-temperature of 19.4°C (66.9°F) during June.

Humidity

The most humid month is June, with an average relative humidity of 76%.

Rainfall

June is the month with the most rainfall. Rain falls for 12.4 days and accumulates 272mm (10.71") of precipitation.

Snowfall

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

Sea temperature

In Fukuoka, Japan, in June, the average water temperature is 22°C (71.6°F).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 22°C (71.6°F) water. (FYI: The Olympic swimming competition requires a water temperature between 25°C (77°F) and 28°C (82.4°F).)

Daylight

June has the longest days of the year in Fukuoka, with an average of 14h and 18min of daylight.
On the first day of the month, sunrise is at 05:09 and sunset at 19:23. On the last day of June, in Fukuoka, sunrise is at 05:11 and sunset at 19:32 JST.

Sunshine

In June, the average sunshine in Fukuoka is 4.9h.

UV index

In June, the average daily maximum UV index in Fukuoka, Japan, is 10. A UV Index value of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high UV index of 10 in June translates into the following recommendations:
Being unprotected puts skin and eyes at risk of rapid damage. Always be safe. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. To keep the sunburn at bay, apply sunscreen with at least 30 SPF. This also minimizes damage caused by the Sun's radiation. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.