June weather forecast
Osaka, Japan

With summer taking root, June brings hot weather to Osaka, reaching peak temperatures of 27.8°C (82°F). While the weather is mostly sunny, levels of humidity increase consistently, making for very humid conditions. Unlike May, June is a month of contrast with increasingly hot days and persistent downpours. Osaka's weather in June is defined by steep rises in temperature combined with heavy showers. Despite the mix of weather conditions, there is an abundance of daylight, making outdoor activities possible for most of the day.

Temperature

June in Osaka, Japan, comes with a subtle rise, with the average high-temperature adjusting from 24.5°C (76.1°F) in May to a still warm 27.8°C (82°F). Throughout June, the temperature tends to fall to a consistent average low of 20°C (68°F).

Heat index

The average heat index in June is appraised at a tropical 30°C (86°F). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

In June, the average relative humidity is 68%.

Rainfall

June is the month with the most rainfall in Osaka. Rain falls for 11.2 days and accumulates 185mm (7.28") of precipitation.

Snowfall

In Osaka, snow does not fall in March through December.

Sea temperature

In Osaka, in June, the average water temperature is 22.5°C (72.5°F).
Note: While a person's sensitivity to cold is personal, factors like sunshine, wind, and the temperature can influence their comfort in 22.5°C (72.5°F) waters. Olympians, for perspective, swim in waters between 25°C (77°F) and 28°C (82.4°F).

Daylight

With an average of 14h and 24min of daylight, June has the longest days of the year.
On the first day of June, sunrise is at 04:45 and sunset at 19:05. On the last day of the month, sunrise is at 04:48 and sunset at 19:15 JST.

Sunshine

In Osaka, the average sunshine in June is 5.2h.

UV index

In Osaka, Japan, the average daily maximum UV index in June is 10. A UV Index reading of 8 to 10 represents a very high health risk from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high UV index of 10 in June translates into the following recommendations:
Precautions are essential; the risk of damage to unprotected skin and eyes is too high. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. If you're sensitive to the Sun, minimize your direct exposure and always apply sunscreen with at least 30 SPF. Take caution! The UV rays from the Sun gain strength from sand and water reflections.