Weather in Jepun in September
Country-wide climate normals across 64 cities in Jepun.
How Hot Is Jepun in September?
Uniform warmth covers Jepun in September: highs near 27°C across all cities.
Sunshine in Jepun in September
Jepun sees limited sun in September: just 2.5h a day in Tokyo, with heavy cloud cover common across most regions. Daylight runs from 5:25 am to 5:45 pm, but persistent grey skies and overcast stretches mean direct sunlight is genuinely scarce. Many days pass without any prolonged sunny spells.
Does It Rain In Jepun In September?
Monsoon-like conditions dominate Jepun'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 Jepun Humid In September?
Mugginess defines Jepun's September: humidity averages 75% in Tokyo, and the air feels noticeably heavy across most regions. Sweat sits on the skin longer than it would in drier conditions, and overnight relief is limited. Pack light, breathable fabrics.
Wind In Jepun In September
Gentle steady winds define Jepun'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 Jepun In September
Cloudy skies dominate Jepun in September — 69% cover in Tokyo, with similar overcast conditions in most regions. Direct sun is patchy and broken; expect grey stretches between brief bright moments. Coastal areas may be heavier than inland.