5-day weather forecast Bangkok Sep 21, 2026

29°25° · Light rain shower

Weather forecast Bangkok Monday Sep 21, 2026: light rain shower, temperature from 25 °C to 29 °C.

Precipitation probability 71%. Wind up to 2.81 m/s (gusts 7 m/s). Air humidity 75–93%, atmospheric pressure 756–760 mm Hg, UV index up to 9.7.

Sunrise 06:07
Sunset 18:15
Waxing Gibbous82% illuminated
Moonrise 14:52 · Moonset 01:36
Chart
Table

Forecast from 25 °C to 29 °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)262626262525252525262727282828292828272727262626
Precipitation (mm/hr)0.580.180.350.660.40.240.040.3100.351.031.380.390.640.030.571.380.580.840.820.660.130.190.2

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 (%)10010010010010010010010097971001009510010098100100100100100100100100
Rain chance (%)624353655649365329507071475824517060666663404344

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)2.812.191.391.691.691.811.691.390.610.690.611.612.111.691.811.8121.6922.392.39210.5
Wind gust (m/s)76.315.223.422.422.612.51.55.610.720.921.812.442.52.833.033.7234.114.814.814.112.110.61
Wind direction (°)SW 232°WSW 239°W 280°NW 326°N 2°NNE 28°NE 50°ENE 72°E 85°NNE 18°NNW 329°WSW 253°WSW 253°WSW 243°SW 227°SSW 204°SSW 203°SSW 197°SW 227°WSW 244°WSW 255°WSW 255°W 278°N 7°

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 (%)889089909092939290878583818077758285868687888888

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)760759758758758758758758759759759759758758757756756756756757758758758758

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 Index000000000.31.23.15.58.49.78.15.42.80.8000000

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)88.17.87.98.59.39.711.813.413.512.31010.28.587.67.57.67.95.44.47.18.29.1
PM10 (µg/m³)8.58.78.48.69.11010.412.614.314.513.31111.29.48.98.58.58.68.86.14.97.68.79.6
Ozone (O₃) (µg/m³)494847474642373642516172839093918674574438353229
NO₂ (µg/m³)13.614.414.414.114.616.619.421.623.124.123.419.714.410.810.311.613.315.417.920.322.424.425.725.5
SO₂ (µg/m³)4.44.44.44.54.95.97.28.610.412.212.911.69.17.36.8776.6666.98.39.39.2
CO (µg/m³)4863602942702933915356527197577566875785044414145701098181022842317211218621583

Bangkok 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.