What to pack for Yokohama in September
- t-shirts and light layers
- a light jacket for evenings
- a compact umbrella or rain shell — rain is frequent
- expect humid, sticky conditions
Humidity averages 81%; max daily wind around 24 km/h.
How September compares
Best months in Yokohama: April–May & October–November. See the full best time to visit Yokohama guide.
Yokohama in September: the details
In September, Yokohama sees average daytime highs of 28°C (82°F) and overnight lows of 22°C (71°F). Rainfall totals roughly 179 mm across 13.7 rainy days, and the sun shines about 8.2 hours per day with 12.2 hours of daylight mid-month. Relative humidity averages 81%.
In context: September is the third-warmest month and the 4th-wettest in Yokohama. The sunniest month is August (10.7 h/day).
| Metric | September average |
|---|---|
| Daytime high | 28°C / 82°F |
| Overnight low | 22°C / 71°F |
| Rainfall | 179 mm over 13.7 rainy days |
| Sunshine | 8.2 h/day (12.2 h daylight) |
| Humidity | 81% |
| Travel score | 7.1 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Yokohama, Japan (35.43, 139.65) — see our methodology. Actual conditions vary year to year.
Not set on Yokohama? Browse the best places to visit in September ranked by travel score.
Frequently asked questions
How hot is Yokohama in September?
Daytime highs in Yokohama in September average 28°C (82°F); nights drop to about 22°C.
Does it rain in Yokohama in September?
Expect around 13.7 rainy days and 179 mm of rainfall in September.
Is September a good time to visit Yokohama?
September is a good month to visit Yokohama. Overall travel score: 7.1/10. The best months are April–May & October–November.
Also good in September, near Yokohama
Where should you go next month?
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