June weather forecast
Ishigaki, Japan

June in Ishigaki, Japan, consistently maintains high temperatures along with a high relative humidity of 85%. Despite the soaring temperatures, the rainfall remains relatively consistent from the last month, around 94mm (3.7"), which does not hamper outdoor activities as the area receives the most sunshine hours, averaging 9.8 hours per day. The presence of a gentle breeze around 22.9km/h (14.2mph) goes a long way in creating a balance between the humidity and heat. Moreover, warmer sea temperatures make it a great time for beachgoers and marine adventurers.

Temperature

With June's arrival, Ishigaki notes an average high-temperature of a still warm 28.3°C (82.9°F), closely following the trend of the preceding month. In June, a low-temperature average of 27.4°C (81.3°F) is characteristic of Ishigaki, marking a minor shift from daytime temperatures.

Heat index

The heat index in June is appraised at a hot 34°C (93.2°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.

Humidity

With an average relative humidity of 85%, June is the most humid month.

Rainfall

In June, in Ishigaki, the rain falls for 16.8 days. Throughout June, 94mm (3.7") of precipitation is accumulated. In Ishigaki, during the entire year, the rain falls for 228 days and collects up to 1184mm (46.61") of precipitation.

Sea temperature

In June, the average sea temperature is 28°C (82.4°F).
Note: Engaging in water activities, such as swimming or diving, in temperatures from 25°C (77°F) to 29°C (84.2°F) is very pleasurable for extended periods, without any discomfort.

Daylight

The month with the longest days in Ishigaki is June, with an average of 13h and 36min of daylight.
On the first day of June in Ishigaki, sunrise is at 05:54 and sunset at 19:27. On the last day of the month, sunrise is at 05:58 and sunset at 19:35 JST.

Sunshine

June has the most sunshine of the year, with an average of 9.8h of sunshine.

UV index

The months with the highest UV index in Ishigaki are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 7 in June translates into this advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Take heed! Reflections of sand and water make the Sun's UV rays stronger.