5-day weather forecast Lisbon 20-05-2026

Weather forecast Lisbon Wednesday, May 20 20.05.2026: sunny, temperature from 16 °C to 28 °C.

No precipitation expected. Wind up to 5.11 m/s (gusts 7.36 m/s). Air humidity 39–82%, atmospheric pressure 764–767 mm Hg, UV index up to 9.

Sunrise 06:20
Sunset 20:46

Waxing Crescent15% illuminated
Moonrise 09:39 · Moonset 00:20

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Table

← Tue, May 19

Wed, May 20, 2026

Thu, May 21 →

Forecast from 16 °C to 28 °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)	17	17	16	16	16	16	16	16	18	20	22	24	25	27	28	28	28	27	26	25	23	21	21	20
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 (%)	3	3	3	3	3	3	3	3	3	3	2	2	1	3	6	5	4	3	2	1	0	0	0	0
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)	3	2.69	2.5	2.5	2.61	2.61	2.5	2.69	3.11	3.69	3.61	3.39	2.61	1.39	1.81	2.69	4.11	5.11	4.5	4	3.19	2.5	1.69	1.11
Wind gust (m/s)	5.56	5.19	4.92	5	5.31	5.33	5.17	5.33	5.11	5.14	4.86	4.67	3.89	2.17	2.78	4.25	6.06	7.36	7.06	6.5	5.83	5.17	3.58	2.31
Wind direction (°)	N 0°	N 6°	NNE 21°	NNE 24°	NNE 29°	NNE 33°	NNE 32°	NE 35°	NE 40°	NE 46°	NE 54°	ENE 69°	E 90°	SE 133°	SSW 205°	WSW 245°	W 259°	W 264°	W 272°	W 281°	WNW 284°	WNW 289°	WNW 298°	NW 305°

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 (%)	81	82	81	82	81	81	81	79	72	64	58	52	48	44	41	40	39	43	46	49	54	59	60	61

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)	767	767	766	766	766	766	766	766	766	766	766	766	765	765	764	764	764	764	764	764	764	765	766	766

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	0.6	1.6	3.4	5.6	7.6	8.9	9	8	6.1	3.8	1.9	0.7	0.2	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)	8.5	8.1	8.1	8.4	8.6	9	9	9.5	9.3	8.5	6.2	6	6	6.5	6.9	7.4	8	8.5	8.4	8.4	8.7	8.7	8.8	9.2
PM10 (µg/m³)	11.3	11	10.7	10.8	11.1	11.3	11.1	10.6	10.2	9.2	6.8	6.5	6.8	7.5	8.2	8.8	9.5	9.8	9.6	9.9	11	11	11	10.8
Ozone (O₃) (µg/m³)	49.5	47.5	46.2	45	44	44	43	43	44	48	53	62	76	92	106	116	123	124	118	107	94	80	66	53
NO₂ (µg/m³)	12.8	10.7	9.9	8.8	7.8	7	6.6	6.4	6.2	6.1	6	5.7	4.9	4	3.3	3.1	3.2	3.6	4.1	4.9	6.3	8.6	11.3	13.9
SO₂ (µg/m³)	2.5	2.7	2.8	2.8	2.4	2.1	1.9	1.7	1.7	2	2.4	2.8	3	3.2	3.3	3.5	3.7	3.8	3.8	3.7	3.6	3.6	3.5	3.5
CO (µg/m³)	127.9	125.4	122.9	120.9	119.9	118.9	118.9	119.9	121.9	125.9	130.9	134.9	137.9	139.9	144.9	152.9	163.9	172.9	180.9	187.9	188.9	177.9	159.9	148.9

← Tue, May 19

Wed, May 20, 2026

Thu, May 21 →

Lisbon 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.

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