5-day weather forecast Prague 20-05-2026

Weather forecast Prague Wednesday, May 20 20.05.2026: patchy rain possible, temperature from 10 °C to 18 °C.

Precipitation probability 100%. Wind up to 5.11 m/s (gusts 8.75 m/s). Air humidity 62–94%, atmospheric pressure 766–771 mm Hg, UV index up to 5.3.

Sunrise 05:10
Sunset 20:49

Waxing Crescent15% illuminated
Moonrise 08:07 · Moonset 00:36

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Table

← Tue, May 19

Wed, May 20, 2026

Thu, May 21 →

Forecast from 10 °C to 18 °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)	11	10	11	10	10	10	10	11	12	12	13	14	14	14	17	16	18	18	18	17	15	12	12	11
Precipitation (mm/hr)	0.06	0.23	0.33	0.15	0.01	0	0	0	0	0	0	0.08	0.09	0.01	0.37	0.06	0.04	0.01	0.05	0.13	0.03	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 (%)	100	79	100	100	100	100	36	48	59	63	100	94	100	75	93	83	60	87	78	83	79	40	37	30
Rain chance (%)	100	100	100	100	71	0	0	0	0	0	0	100	100	84	100	100	71	75	79	100	83	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)	4.89	3.69	3.61	3.81	3.31	3.61	2.81	3.11	3.69	3.11	3	3.81	4.5	3.69	4.89	5.11	4.61	4.81	4.5	3.19	1.89	1.39	1	1.19
Wind gust (m/s)	8.75	6.33	5.61	5.64	5.33	5.67	4.42	4.31	4.64	4.11	4.03	4.67	5.25	4.86	5.78	6.33	5.36	5.78	5.67	4.64	3.72	2.94	2.11	2.53
Wind direction (°)	WSW 257°	WSW 258°	WSW 244°	WSW 238°	SW 236°	WSW 241°	SW 229°	SW 229°	WSW 239°	SW 233°	SW 235°	WSW 250°	WSW 246°	WSW 245°	W 262°	W 270°	W 275°	WNW 286°	WNW 289°	WNW 296°	NW 312°	NW 322°	NW 310°	W 277°

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 (%)	89	93	93	94	93	92	91	90	84	85	84	76	78	80	69	72	65	62	62	68	76	83	86	87

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)	766	766	766	767	767	767	767	767	767	767	768	768	768	768	767	768	768	768	768	769	769	770	770	771

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	0.1	0.1	0.5	1.8	2.8	2.4	2.5	5.3	2.9	2.9	2.3	1	0.4	0.1	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)	10.9	9	10.3	13.4	15.8	15.2	11.7	10.5	11.1	11.7	11	8.7	7.3	6.8	5.3	4.8	4.6	4.5	4.4	4.8	5.2	5.5	6.1	6.7
PM10 (µg/m³)	11.7	13.5	12.4	15.8	18.3	15.6	12.5	11.2	11.5	14.2	13.1	10.2	9.8	7.3	7.2	6.8	6.8	6.5	5.8	6.8	6.7	7.1	7.8	9.5
Ozone (O₃) (µg/m³)	70	58	57	55	52	43	38	35	29	55	60	69	82	85	89	88	87	84	85	81	81	81	76	68
NO₂ (µg/m³)	12	16.1	13.8	15.1	17.2	15	12.5	10.8	10.5	11.2	11.6	8.5	6.4	4.2	3.6	3.8	4	4.1	4.7	5	5.6	6.7	7.9	10.2
SO₂ (µg/m³)	4	3.4	3.5	3.6	3.5	3.3	2.5	2.2	2.4	2.7	2.8	2.5	2.1	1.8	1.8	1.5	1.5	1.5	1.5	1.6	1.7	2	2.3	2.9
CO (µg/m³)	212.9	218.9	219.9	224.9	235.9	234.9	214.9	202.9	206.9	195.9	187.9	161.9	145.9	138.9	137.9	135.9	133.9	132.9	139.9	142.9	146.9	155.9	169.9	189.9

← Tue, May 19

Wed, May 20, 2026

Thu, May 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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