5-day weather forecast Lisbon 18-07-2026

Weather forecast Lisbon Saturday, July 18 18.07.2026: sunny, temperature from 18 °C to 26 °C.

Precipitation probability 15%. Wind up to 7 m/s (gusts 8.67 m/s). Air humidity 47–87%, atmospheric pressure 761–763 mm Hg, UV index up to 9.2.

Sunrise 06:26
Sunset 20:59

Waxing Crescent23% illuminated
Moonrise 10:55 · Moonset 23:28

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Table

← Fri, Jul 17

Sat, Jul 18, 2026

Sun, Jul 19 →

Forecast from 18 °C to 26 °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)	19	19	18	18	18	18	18	18	19	21	22	24	25	26	26	26	26	25	24	23	22	20	20	19
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 (%)	0	6	5	10	13	9	8	9	4	1	0	0	0	0	5	18	22	26	7	16	10	14	34	30
Rain chance (%)	9	10	11	12	12	12	13	12	10	6	4	3	2	1	2	2	3	3	3	4	6	10	14	15

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)	4.19	4.11	3.61	2.69	2.89	3	3	2.69	3.5	3.89	4.11	4.39	4.5	5.19	6	6.61	6.81	7	6.81	6.69	6.39	5.89	5.31	4.81
Wind gust (m/s)	6.36	6.22	5.53	4.22	4.5	4.72	4.75	4.17	4.75	4.97	5.03	5.36	5.47	6.08	6.89	7.58	7.89	8.19	8.33	8.47	8.67	8.39	7.67	6.97
Wind direction (°)	NNW 345°	NNW 342°	NNW 340°	NNW 340°	NNW 333°	NNW 331°	NNW 331°	NNW 329°	NNW 334°	NNW 337°	NNW 332°	NW 324°	NW 317°	NW 309°	NW 307°	NW 308°	NW 310°	NW 312°	NW 315°	NW 318°	NW 322°	NW 324°	NNW 328°	NNW 330°

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 (%)	80	82	83	84	85	86	87	87	81	71	62	56	51	48	47	47	48	51	56	60	68	79	84	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)	763	763	762	762	762	762	762	762	762	762	762	762	762	762	761	761	761	761	761	761	761	761	761	761

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	1.8	3.6	5.8	7.9	9.2	8.9	7.9	6.1	3.9	2	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)	7.3	6.3	5.8	5.7	5.7	6	6.2	6.2	6	5.9	5.8	5.7	5.9	6	6	5.9	5.8	6	6.1	6	6	6.2	6.9	7.9
PM10 (µg/m³)	10.7	11.4	11.3	11.8	11.9	11.9	11.4	11.3	11.3	11.8	11.8	11.1	11.6	12.3	11.9	11.4	10.7	10.3	11.6	12.7	12.5	14.2	13.5	13.2
Ozone (O₃) (µg/m³)	72	70	72	72	71	70	68	64	63	66	68	75	81	87	89	89	89	85	86	87	83	82	81	87
NO₂ (µg/m³)	7.2	7.5	6.2	5.6	5.2	5.8	7.4	10.6	12.7	10	8.8	6.4	8.8	7.6	6.8	6.5	6.2	6.1	7.1	7.3	8.3	8.6	10.3	8.7
SO₂ (µg/m³)	1.2	1.1	1	1	1	1.1	1.2	1.3	1.5	1.6	1.6	1.6	1.4	1.4	1.4	1.2	1.2	1.2	1.2	1.1	1.2	1.2	1.3	1.4
CO (µg/m³)	111	111	108	108	109	111	113	118	121	122	118	115	119	116	114	113	113	112	111	110	112	113	116	115.5

← Fri, Jul 17

Sat, Jul 18, 2026

Sun, Jul 19 →

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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