Spring (March–May): Average 11.5–19.6°C, mild climate but with relatively heavy rainfall, especially in April. Common activities: flower viewing, outdoor excursions (be mindful of changing weather). Recommended attire: light jacket, comfortable trousers or skirt, and rain gear.
Summer (June–August): Average 23.2–28.9°C, hot and humid, with relatively heavy rainfall from June to August. Common activities: swimming at the beach, indoor activities. Recommended attire: light and breathable clothing, sun hat, and sunscreen.
Autumn (September–November): Average 19.9–15.4°C, comfortable and pleasant climate, but occasional rainfall. Common activities: maple leaf viewing, outdoor excursions. Recommended attire: light jacket or cardigan, trousers or skirt.
Winter (December–February): Average 9.6–7.6°C, cold and dry, with low rainfall. Common activities: indoor sightseeing, onsen (hot springs). Recommended attire: warm coat, scarf, hat, and gloves.
Haneda climatological average
Annual average temperature: approx. 17.8°C / Annual rainfall: approx. 1636 mm / Summer humidity: 70%–80% / Rainiest month: June
Haneda monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
6.9°C
30.9
February
7.6°C
61.9
March
11.5°C
149
April
16.4°C
161
May
19.6°C
186.5
June
23.2°C
243.6
July
28.2°C
140
August
28.9°C
206.2
September
26.3°C
188.4
October
19.9°C
148.2
November
15.4°C
91.4
December
9.6°C
29.3
Haneda weather for the next seven days
10/29
Wednesday
Overcast
14.9°C/14.5°C
10/30
Thursday
Sunny
18.3°C/13.5°C
10/31
Friday
Heavy rain
19.7°C/14.8°C
11/1
Saturday
Heavy rain
21.1°C/14.5°C
11/2
Sunday
Sunny
21.1°C/17°C
11/3
Monday
Sunny
19°C/14.6°C
11/4
Tuesday
Overcast
17°C/15.8°C
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