Sendai Weather in September

September weather

September in Sendai feels warm, damp and often cloudy. Daytime highs reach 25°C, while evenings cool to around 16°C. Rain falls on 15 days, so expect showers to interrupt outdoor plans.

You can still explore Zuihoden Mausoleum or stroll beneath the trees along Jozenji-dori, but keep indoor stops handy. Sendai's covered shopping arcades are useful when the rain sets in. Long hikes can feel uncomfortable in the humidity, and beach plans are less reliable than in drier months.

Festivals and crowds

The Jozenji Street Jazz Festival brings live music to central Sendai in September. Its street stages make a fun day out, though the area gets busier during the festival. Respect for the Aged Day and the Autumnal Equinox are national holidays; their dates vary, and some years they create a longer holiday break.

If you hate crowds, visit Jozenji-dori on a weekday outside the festival.

September is past the peak summer holiday period, so Sendai is generally calmer than in August. Prices may be easier on ordinary dates, but don't assume that applies during the jazz festival or a holiday weekend. October is cooler and a little less rainy, while August is hotter and wetter.

Make rain work for you

Use rainy spells to try gyutan, Sendai's grilled beef tongue, around Sendai Station, then explore the connected arcades. They're a practical shelter and keep you close to cafés and shops if a shower lingers.

For clearer breaks, head to the open grounds around Sendai Castle ruins, where you can look over the city. Keep your route flexible: with frequent rain and limited sunshine, a quick change from outdoor sightseeing to the station area can save a soggy afternoon.