Weather in 일본 in 9월
Country-wide climate normals across 64 cities in 일본.
How Hot Is 일본 in 9월?
일본's September is consistently warm — typical 27°C, with no major regional outliers.
Sunshine in 일본 in 9월
Dark, overcast days dominate 일본 in September — Tokyo sees just 2.5h of sun a day, and the pattern is similar across most regions. Cloud cover is heavy and persistent, with even the brighter regions struggling to escape the gloom for long.
Does It Rain In 일본 In 9월?
Monsoon-like conditions dominate 일본's September: Tokyo sees 242mm of rain across 15 days, similar nationwide. Heavy showers fall almost daily, often in dramatic afternoon downpours. Sunshine is brief between storms, and humidity stays high throughout the month.
Is 일본 Humid In 9월?
일본 feels humid through September: 75% in Tokyo, similar nationwide. Warm days feel several degrees hotter than the thermometer suggests, and morning mist or post-rain steam is common. Drier upland or interior regions may feel a bit less oppressive.
Wind In 일본 In 9월
Gentle steady winds define 일본's September: Tokyo averages 16 kph, with conditions consistent across most regions. The breeze keeps warm days bearable without being a nuisance.
Cloud Cover In 일본 In 9월
일본 sees mostly cloudy weather through September: Tokyo averages 69% cloud cover, and the pattern repeats across the country. Bright sun is uncommon; expect a grey, soft-lit feel to most days.