September 7th – September 11th, 2025 is Autumn – Start of HAKURO (White dew)-43rd KOU “Dew glistens white on grass.”
In the 24 SEKKI (Major divisions of the year), now it’s “HAKURO.” HAKU“ means white and “RO” is dew.
It’s getting cooler in the mornings and evenings. The lowest temperature this morning was 19°C at 5am.
When radiation cooling occurs at night or early in the morning, the surface temperature of leaves of grasses and trees could drop below the surrounding air temperature. And the surface temperature drops below the dew point, causing morning dew to form on the leaves.
The 43rd KOU depicts the subtle change of seasons through the depiction of morning dew glistening on leaves.
There’s an old saying that goes, “a day with morning dew will be sunny”
This is because the radiative cooling that caused morning dew is often caused by high pressure at night and early morning, and the high pressure remains stable throughout the day.
So, will it be sunny today?
