Yokohama Weather in September

Japan · September climate averages and travel tips

Avg high27°C (81°F)
Avg low20°C (67°F)
Rainfall218 mm (8.6 in)
RatingPoor 4/10

Yokohama in September sees daytime temperatures around 27°C (81°F), dropping to about 20°C (67°F) at night. September is autumn (fall) in Japan. The month is wet, with about 218 mm (8.6 in) of rain spread over 15 days, making it the wettest month of the year. Humidity averages 84%, so it feels sticky and hotter than the thermometer suggests. You get roughly 12.2 hours of daylight and frequently cloudy skies.

Is September a good time to visit Yokohama?

September is not the best time to visit Yokohama (4/10) mainly because of the rain. The weather is much better in November.

Visiting Yokohama in September

September weather

Yokohama is still warm in September, but it's less intense than August. Expect sticky air, cloudy skies and frequent rain. Showers can interrupt a day out, and typhoons may bring rough weather, so keep plans flexible.

You can still stroll around Yamashita Park or explore Minato Mirai between showers. But long outdoor days feel tiring in the humidity, and beaches are less appealing when rain or rough seas roll in. Save the open-air sights for clearer spells, and have an indoor stop in mind.

Events and local days

Yokohama Oktoberfest often begins at the Red Brick Warehouse in late September, with German food and beer. Dates vary, so check the event schedule before you go. The month can also include Silver Week, a cluster of Japanese public holidays when many locals travel.

Travelling with kids? The Cup Noodles Museum in Minato Mirai makes a useful rainy-day stop, though it can be busy on weekends and holidays.

Crowds and practical tips

September is usually quieter than August, when summer holidays bring more families to the waterfront. It can also feel less crowded than November, one of Yokohama's best-loved months. Hotels and flights may be less in demand than in peak autumn, but Silver Week and Oktoberfest weekends can bring a rush.

If rain catches you near the Red Brick Warehouse, follow the covered route towards the nearby Marine & Walk shops for a dry break. Yokohama's weather can change quickly, so check the forecast before setting out for the waterfront.

September weather at a glance

Average high27°C (81°F)
Average low20°C (67°F)
Daily mean23°C (74°F)
Rainfall218 mm (8.6 in)
Rainy days (1 mm+)15
Humidity84%
Cloud cover70%
Daylight12.2 hours
Est. sunshine4 hours/day
Wind8.6 km/h
vs August4°C cooler than August, with 55 mm more rain.

What to pack for Yokohama in September

Yokohama weather in other months

Jan9°C / -1°C55 mmFairFeb10°C / 0°C73 mmFairMar14°C / 3°C120 mmFairApr18°C / 8°C142 mmGoodMay23°C / 13°C152 mmGoodJun26°C / 18°C202 mmPoorJul30°C / 22°C190 mmPoorAug31°C / 23°C163 mmPoorSep27°C / 20°C218 mmPoorOct22°C / 13°C199 mmFairNov17°C / 7°C92 mmGoodDec11°C / 1°C65 mmGood

← AugustBest time to visit YokohamaOctober →

Better weather in September nearby

Nearby in September

Where else is good in September? See where to go in September.