The weather was fantastic, allowing us to see Mount Fuji and the last vestiges of the cherry blossoms. Our guide, Xiao Chen, provided clear explanations and made excellent arrangements; highly recommended.
Our tour guide was from Taiwan, which made us feel very welcome. The service was excellent, everyone was punctual, the scenery was stunning, and the value for money was great. I would definitely join KKday Travel again if I have the chance. Today was a wonderful day trip, though the time was a bit tight.
Anonymous User
Solo traveler
Nishi-Shinjuku Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Nishi-Shinjuku year round climate
Spring (March–May): 11.1–19.3°C on average, with a mild and comfortable climate, but relatively high rainfall. Be mindful of weather changes. Common activities: flower viewing, outings, shopping. Recommended clothing: light jacket, long-sleeved shirts and pants, rain gear.
Summer (June–August): 23.1–28.6°C on average, hot and humid, with relatively high rainfall and occasional typhoons. Common activities: indoor activities such as shopping at department stores and enjoying night views. Recommended clothing: light and breathable clothing, sweat-wicking clothing, rain gear.
Autumn (September–November): 14.2–25.9°C on average, comfortable and pleasant, cool and dry, but be mindful of temperature differences between morning and evening. Common activities: maple leaf viewing, outdoor activities, visiting museums, etc. Recommended clothing: light jacket, long-sleeved shirts and pants; adjust clothing according to temperature differences.
Winter (December–February): 5.9–8.3°C on average, cold and dry, with occasional snowfall. Common activities: indoor activities such as onsen (hot springs) and visiting indoor attractions. Recommended clothing: warm coats, sweaters, scarves, hats, etc.
Nishi-Shinjuku climatological average
Annual average temperature: approx. 17°C / Annual rainfall: approx. 1648 mm / Summer humidity: 70%–80% / Rainiest month: June
Nishi-Shinjuku monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
5.9°C
25
February
6.8°C
63.7
March
11.1°C
148.3
April
16.2°C
143.7
May
19.3°C
186.3
June
23.1°C
253.7
July
28.3°C
156.7
August
28.6°C
206.3
September
25.9°C
217
October
18.9°C
146.7
November
14.2°C
75.7
December
8.3°C
25.8
Nishi-Shinjuku weather for the next seven days
5/14
Thursday
Moderate rain
24.6°C/15.9°C
5/15
Friday
Partly Cloudy
23.5°C/14.7°C
5/16
Saturday
Sunny
25.4°C/17°C
5/17
Sunday
Patchy rain nearby
22.6°C/18.1°C
5/18
Monday
Patchy rain nearby
27.6°C/18.1°C
5/19
Tuesday
Sunny
27°C/19.9°C
5/20
Wednesday
Partly Cloudy
26.1°C/21°C
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