5-day weather forecast Bangkok 20-04-2026

Weather forecast Bangkok Monday, April 20 20.04.2026: sunny, temperature from 30 °C to 38 °C.

No precipitation expected. Wind up to 8.19 m/s (gusts 9.67 m/s). Air humidity 26–71%, atmospheric pressure 752–758 mm Hg, UV index up to 10.9.

Sunrise 06:02
Sunset 18:32

Waxing Crescent9% illuminated
Moonrise 08:08 · Moonset 21:39

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Table

← Sun, Apr 19

Mon, Apr 20, 2026

Tue, Apr 21 →

Forecast from 30 °C to 38 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	30	30	30	30	30	30	30	30	31	33	35	36	37	38	38	38	38	36	34	32	32	31	31	31
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	12	19	28	32	18	20	12	13	10	11	11	11	11	11	10	9	5	5	10	12	11	16	8	10
Rain chance (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	6.31	6.11	6.31	6.11	5.5	5	4.11	3.39	2.69	1.89	1.31	1.81	2.81	4.31	6.11	6.69	7	6.69	7.81	8.19	8	7.69	5.89	6.11
Wind gust (m/s)	8	7.78	8	7.89	7.17	6.69	5.44	4.31	3.11	2.19	1.5	2.08	3.22	4.94	7.03	7.72	8.06	7.72	8.97	9.67	9.33	9.33	7.33	7.58
Wind direction (°)	S 173°	S 177°	S 176°	S 175°	S 180°	S 186°	SSW 201°	SW 215°	SW 226°	SW 226°	SSW 213°	S 178°	S 170°	SSE 165°	SSE 163°	SSE 167°	SSE 163°	SSE 164°	SSE 156°	S 173°	S 172°	SSE 160°	S 169°	S 169°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	70	71	71	71	70	67	62	56	49	41	34	30	27	26	27	30	29	32	39	49	57	61	61	65

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	757	756	755	755	755	755	756	757	758	758	758	758	757	755	755	754	753	752	753	755	755	756	756	757

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0	0.3	1.5	3.7	6.7	9.4	10.9	10.5	8.8	5.7	2.8	0.9	0.1	0	0	0	0	0

Air quality & pollen

Air quality
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
PM2.5 (µg/m³)	19.5	17.4	15.1	12.6	11.3	10.4	10	10.2	11.5	14.6	17.9	21.9	25.5	27.9	30.5	31.9	32.3	31.1	30.4	28.8	26.7	24.6	21.9	19.6
PM10 (µg/m³)	22.6	20.1	17.6	15	13.7	12.7	12.3	12.5	14	17.1	20.6	24.8	28.5	31.2	33.7	35.8	36.5	35.1	34.3	32.7	30.3	27.9	24.9	22.4
Ozone (O₃) (µg/m³)	121	100	83	73	66	63	63	65	69	75	82	86	82	76	76	89	108	125	137	147	152	150	143	133
NO₂ (µg/m³)	12	15.3	17	15.6	12.5	9.7	7.7	6	4.8	4.2	4.3	4.9	6.8	9.3	10.8	10.1	8.4	6.9	6.2	5.7	5.7	6.2	7.2	8.5
SO₂ (µg/m³)	6.7	7.1	7.2	6.5	5.5	4.5	3.8	3.2	2.9	2.9	3.1	3.5	4.3	5.2	5.9	5.9	5.7	5.4	5.3	5.1	5.1	5.2	5.3	5.5
CO (µg/m³)	512.9	555.9	564.9	508.9	418.9	344.9	306.9	285.9	268.9	238.9	213.9	236.9	350.9	512.9	630.9	665.9	657.9	631.9	586.9	523.9	479.9	470.9	479.9	492.9

← Sun, Apr 19

Mon, Apr 20, 2026

Tue, Apr 21 →

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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.

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