5-day weather forecast Prague 18-05-2026

Weather forecast Prague today 18.05.2026: sunny, temperature from 5 °C to 18 °C.

No precipitation expected. Wind up to 2.19 m/s (gusts 4.61 m/s). Air humidity 42–87%, atmospheric pressure 760–763 mm Hg, UV index up to 6.

Sunrise 05:12
Sunset 20:46

Waxing Crescent2% illuminated
Moonrise 05:42 · Moonset 23:41

Chart

Table

Mon, May 18, 2026

Tue, May 19 →

Forecast from 5 °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)	7	6	6	6	5	5	5	8	9	11	13	15	16	17	18	18	18	18	18	17	14	12	11	10
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 (%)	24	19	19	50	24	24	23	20	17	18	16	14	12	20	29	28	25	19	17	19	22	22	21	24
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)	1.19	1.19	0.89	1	0.69	0.61	0.5	0.61	1	1.19	1.5	1.5	0.89	0.69	1.19	1.39	1.39	1.11	0.69	0.81	1.39	1.81	2.19	2
Wind gust (m/s)	2.53	2.53	1.89	1.25	1.47	1.25	1.03	0.89	1.22	1.39	1.72	1.72	1.03	0.81	1.39	1.61	1.61	1.33	0.86	1.08	2.89	3.78	4.61	4.19
Wind direction (°)	SE 131°	SE 132°	SE 145°	SSE 148°	SE 130°	SE 127°	ESE 123°	ESE 103°	E 98°	E 94°	E 89°	E 90°	ENE 75°	NNE 17°	NNW 347°	NW 323°	WNW 303°	WNW 288°	NW 314°	NE 46°	E 91°	SE 128°	SSE 157°	S 171°

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 (%)	78	79	80	87	82	83	81	76	70	64	59	54	50	46	43	42	42	46	46	54	61	65	69	72

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)	763	763	763	761	763	763	763	763	763	762	762	762	761	761	761	761	761	760	760	761	761	761	761	762

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	0.1	0.3	1	2	3.4	4.7	5.6	6	5.7	4.2	3.1	1.8	0.7	0.2	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)	12.1	13.2	12.9	12.3	13.9	14	14.4	15.4	17.1	14.3	15.9	17.1	14.5	12.3	11.7	10.5	10.1	9.7	8.7	8.4	8.2	7.9	9	9.6
PM10 (µg/m³)	15	15.9	14.8	15.8	17.7	18.3	18.6	20.6	17.9	15.5	18.6	20.6	20.1	15.4	16.2	14.1	12.3	12	11.8	10.6	10.2	10.1	10.6	12.7
Ozone (O₃) (µg/m³)	68	66	57	50	45	42	38	34	25	26	44	47	71	85	95	111	114	109	106	103	98	99	88	77
NO₂ (µg/m³)	11.8	12.1	11.2	13.1	14	11.7	14.2	16.1	19.4	18.1	18.5	13.8	13.5	10.2	6.6	5.7	5.3	4.5	4.9	5.5	7.3	8.2	9.2	12.2
SO₂ (µg/m³)	3.2	3.6	3.1	3.1	3.3	3.5	3.5	3.7	4.2	4.8	4.5	4.3	4.2	3.2	2.8	2.6	2.3	2	1.9	2	2.3	2.6	3.5	3.8
CO (µg/m³)	261.9	276.9	250.9	225.9	211.9	213.9	226.9	239.9	244.9	257.9	270.9	217.9	203.9	171.9	153.9	151.9	151.9	146.9	142.9	146.9	156.9	164.9	200.9	223.9

Mon, May 18, 2026

Tue, May 19 →

Frequently asked questions about the weather in Prague

Today in Prague the temperature ranges from 5 °C to 18 °C, wind up to 2.19 m/s. Check the detailed hourly forecast above for more information.

The precipitation probability in Prague today is 0%. View the full multi-day forecast above to see the rain chances for each upcoming day.

The wind speed in Prague today reaches up to 2.19 m/s with gusts up to 4.61 m/s. Check the detailed wind chart above for hourly wind data.

The air humidity in Prague today ranges from 42% to 87%. View the humidity chart above for hourly details.

The UV index in Prague today reaches up to 6. Check the UV index chart above for hourly values throughout the day.

The atmospheric pressure in Prague today ranges from 760 to 763 mm Hg. View the pressure chart above for hourly readings.

Cloud cover in Prague today reaches up to 50%. Check the cloud cover chart above for hourly details throughout the day.

Prague 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.

Learn more about our methodology →