5-day weather forecast Tokyo Sep 18, 2026

22°19° · Patchy rain possible

Weather forecast Tokyo tomorrow Sep 18, 2026: patchy rain possible, temperature from 19 °C to 22 °C.

Precipitation probability 28%. Wind up to 7.39 m/s (gusts 11.33 m/s). Air humidity 61–78%, atmospheric pressure 764–767 mm Hg, UV index up to 1.8.

Sunrise 05:25
Sunset 17:44
First Quarter53% illuminated
Moonrise 12:46 · Moonset 22:05
Chart
Table

Forecast from 19 °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)202019191919192021222222222222212121212121212121
Precipitation (mm/hr)00000000000000.020.030.050.030.010.020.020.010.020.010.06

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 (%)241492449951009772100100100100100100100100100100100100100100100
Rain chance (%)5997915171611151516161820232221222322232228

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)4.55.115.695.695.816.396.697.197.317.1977.197.396.816.896.616.616.396.196.56.56.816.897.11
Wind gust (m/s)6.928.229.2210.1410.1110.511.2211.3310.429.7211.1110.6110.4210.7210.3110.9410.429.429.118.729.6110.3910.511.31
Wind direction (°)NNE 17°N 6°N 1°N 0°N 351°N 350°N 353°N 357°N 359°N 2°N 9°N 5°N 9°NNE 13°NNE 12°N 2°N 0°N 2°N 1°N 353°N 354°N 356°N 353°N 354°

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 (%)696969696866666664616365656670717274757676767778

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)767767767767767767767767767767767766765765765765765765765766765765765764

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 Index00000000.20.511.71.71.81.30.70.30.10000000

Air quality & pollen

Air quality
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
PM2.5 (µg/m³)15.113.812.210.9109.711.613.814.313.814.110.59.510.96.79.410.71213.312.311.51110.59.8
PM10 (µg/m³)18.416.915.113.512.411.813.415.515.715.315.71210.8127.41011.212.513.612.511.811.410.910
Ozone (O₃) (µg/m³)606060595549454342434957626362595242353333333334
NO₂ (µg/m³)22.220.719.719.821.724.827.128.328.928.325.521.518.818.218.921.12632.336.436.133.631.129.427.8
SO₂ (µg/m³)13.813.31313.213.9151617.118.318.517.114.813.112.712.813.414.5161717.217.116.716.115.4
CO (µg/m³)161150139133134141152171195209207196186181177177185197203197186178179183

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.