SeasonScore
Matsuyama, Japan
Photo: Shiro4873 · CC BY 3.0

Japan

Matsuyama in September

🌀 Late summer / typhoon season

Warm, humid and often rainy. Watch for tropical cyclone risk.

🎒 Pack: compact umbrella or rain jacket · quick-dry fabrics

Best months: May (9.1), Nov (9.1), Apr (8.9)

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Why September scores 8.3What goes into the score

How it works
🌡️ 29° / 21°C🌧️ 149 mm💧 dew pt 21°🍃 PM2.5 8
  • Weather comfort7.6
    • ✓Warm (29°C highs / 21°C lows)
    • !Very humid/sticky (dew point 21.2°C)
    • !Wet: ~149 mm rain, ~4 heavy-rain days
  • Air quality9.5
    • ✓Good (within WHO guideline) (PM2.5 ~8 µg/m³)
  • Seasonal hazards8.5
    • !Tropical cyclone: Peak of the Western Pacific typhoon season
  • Safety baseline9.0
    • ·Normal precautions
Compare monthsPut September side by side with another month
SepMay
Score8.3 Very good9.1 Excellent
Season🌀 Late summer / typhoon season🌿 Late spring
High / low29° / 21°24° / 15°
Rain149 mm130 mm
Humiditydew pt 21°dew pt 14°
PM2.58 µg/m³13 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Matsuyama weather-station normals. Rainfall: Matsuyama weather-station normals (national met service).

Holidays & crowdsSeptember 2027

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • Silver Week 18–20 Sep · 3 days off in a row

Other public holidays: Autumnal Equinox Day (23 Sep)

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Nature calendarBlossoms, leaves & seasons in Matsuyama

  • Cherry blossom 2026 (what actually happened)2026 actual
    First blooms 24 Mar 2026, full bloom 4 Apr 2026

    Observed by JMA at the city's official sample tree. The 2027 forecast isn't out yet: Japanese weather companies such as the Japan Weather Association usually publish the first one in January, and we add it then.

    Source: Japan Meteorological Agency

  • Cherry blossomTypical dates
    First blooms ~24 Mar, full bloom ~3 Apr

    Typical dates (1991–2020 normal). In 2021–2026 first blooms came between 15 Mar and 27 Mar (24 Mar in 2026). Blossoms last about a week after full bloom.

    Source: Japan Meteorological Agency

  • Autumn leaves: Matsuyama CastleTypical dates
    Usually late-Nov to early-Dec

    Usual peak viewing window for this spot.

    Source: Japan Weather Association (tenki.jp)

Explore MatsuyamaEvents, sights, food & souvenirs

Check event dates locally

Matsuyama is the largest city in Shikoku, known for Dōgo Onsen, one of Japan's oldest hot springs, its hilltop castle and Ehime citrus.

Events in September

No major events on our calendar for September.

Coming up later

Matsuyama Autumn FestivalDate variesUsually 5-7 October

Portable shrines are clashed together in the Dōgo area in a lively shrine festival.

Why go: The mikoshi clashes are crowded and boisterous; keep a safe distance.

Where: Dōgo and around the city

Matsuyama Castle cherry blossomsDate variesUsually late March to early April

Cherry trees bloom around the castle hill.

Why go: Popular for hanami picnics; peak timing varies with the weather.

Where: Matsuyama Castle grounds

Plan this tripTickets, data and transfers for Matsuyama

Airport transfer Kiwitaxi

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