5-day weather forecast Seoul 18-07-2026

Weather forecast Seoul tomorrow 18.07.2026: light rain shower, temperature from 22 °C to 23 °C.

Precipitation probability 95%. Wind up to 2.61 m/s (gusts 4.14 m/s). Air humidity 91–99%, atmospheric pressure 746–750 mm Hg, UV index up to 5.9.

Sunrise 05:24
Sunset 19:51

Waxing Crescent23% illuminated
Moonrise 09:23 · Moonset 22:13

Chart

Table

← Fri, Jul 17

Sat, Jul 18, 2026

Sun, Jul 19 →

Forecast from 22 °C to 23 °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)	23	23	23	23	23	23	23	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22
Precipitation (mm/hr)	0.56	0.32	5.1	0.45	7.06	15.88	10	8.65	3.25	2.26	2.08	1.85	1.56	0.61	0.11	0.1	0.18	1.38	0.54	0.12	0.04	0.07	0.31	0.52

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	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100
Rain chance (%)	64	54	91	63	92	95	95	94	88	84	83	81	80	67	49	48	53	79	71	50	42	45	61	71

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)	2.39	2.19	2.39	2.39	1.61	0.19	1.89	2.5	1.61	2.19	2.5	2.61	2.19	2	2.11	2.31	2.39	2.11	2	2.19	1.81	1.69	1.69	1.39
Wind gust (m/s)	3.47	3.03	3.58	3.64	2.28	0.28	2.69	3.89	2.78	4.14	3.47	3.83	3.39	3.14	3.31	3.67	3.31	2.92	2.75	3.11	2.61	2.47	2.42	1.97
Wind direction (°)	ESE 106°	ESE 104°	ESE 104°	ESE 123°	SE 124°	ENE 59°	N 5°	NE 40°	ESE 112°	E 94°	E 82°	E 88°	E 86°	E 81°	ENE 78°	E 81°	E 83°	ENE 76°	ENE 68°	ENE 73°	ENE 76°	ENE 70°	ENE 62°	ENE 59°

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 (%)	91	93	96	97	97	99	98	98	97	97	97	96	96	95	94	94	94	95	96	96	95	95	96	96

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)	749	749	748	747	747	746	747	748	748	749	749	749	749	749	749	749	749	749	749	749	749	750	750	750

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	0.2	0.7	1.2	2.8	5.9	5.9	5.5	3.9	2.1	1.2	0.6	0.1	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)	21.5	16.1	12.6	10.7	10.1	10.3	10.4	12.4	11.6	9.8	9.1	8.4	8.5	7.8	8.1	11	11.3	8.8	9.6	11.4	12.9	15	15.9	17.1
PM10 (µg/m³)	24.9	17.6	13.4	11.2	10.4	10.5	10.5	12.5	11.7	9.8	9.2	8.5	8.6	7.8	8.1	11.1	11.4	8.8	9.7	11.5	13	15.1	16.1	17.3
Ozone (O₃) (µg/m³)	82	80	76	73	74	75	73	62	48	40	44	54	64	75	87	93	90	82	74	68	63	59	57	56
NO₂ (µg/m³)	35.5	27.9	22.4	18.7	16.1	15.3	17.5	25.7	36.9	44	42.8	37.5	33	30.6	29	29.3	32.7	37.9	42.9	47.2	51.2	53.8	55	54.8
SO₂ (µg/m³)	10	8.9	8.2	7.9	7.9	8.1	8.6	9.4	10.5	11.2	11.3	11	10.7	10.5	10.4	10.3	10.2	10.2	10.3	10.7	11.3	11.9	12.5	13.1
CO (µg/m³)	800	715	601	505	446	404	370	340	318	300	288	280	274	265	257	257	269	289	306	319	329	333	329	319

← Fri, Jul 17

Sat, Jul 18, 2026

Sun, Jul 19 →

Seoul 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 →