5-day weather forecast Tokyo Sep 20, 2026

22°21° · Moderate or heavy rain shower

Weather forecast Tokyo Sunday Sep 20, 2026: moderate or heavy rain shower, temperature from 21 °C to 22 °C.

Precipitation probability 91%. Wind up to 7.69 m/s (gusts 13.22 m/s). Air humidity 86–94%, atmospheric pressure 756–761 mm Hg, UV index up to 0.6.

Sunrise 05:27
Sunset 17:41
Waxing Gibbous73% illuminated
Moonrise 14:22 · Moonset does not set today
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Table
Sun, Sep 20, 2026

Forecast from 21 °C to 22 °C and precipitation

Temperature & Precipitation
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Temperature (°C)222121212121212121212121212121212222222222222222
Precipitation (mm/hr)1.951.541.032.615.61.052.813.913.826.64.053.951.513.380.452.520.030.0700.040.060.250.20.1

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Cloud cover (%)100100100100100100100100100100100100100100100100100100100100100100100100
Rain chance (%)797572849175858888918888788660833035283233464338

Wind speed and direction

Wind & Wind gust
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Wind (m/s)5.395.695.3155.316.616.116.697.697.697.116.816.1965.115.315.614.895.114.694.113.53.814
Wind gust (m/s)8.729.039.619.339.3111111112.4213.2212.6112.4211.5611.119.5310.259.839.729.729.728.928.428.698.89
Wind direction (°)NNE 30°NNE 33°NNE 21°N 11°N 357°N 358°N 354°N 353°N 351°N 356°N 356°N 357°N 354°N 356°N 1°N 3°N 7°N 3°N 0°N 5°N 5°NNE 16°NNE 14°N 11°

Air humidity

Humidity
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Humidity (%)918889929492929393939393939292908687888787878787

Atmospheric pressure

Pressure
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Pressure (mm Hg)761761761760759759759759759759759758758758758757757757757757757757756756

Ultraviolet index

UV Index
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
UV Index000000000.10.20.40.30.40.40.60.30.40000000

Air quality & pollen

Air quality is available for the first three days only.

Sun, Sep 20, 2026

Tokyo on the map

Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.