5-day weather forecast Hong Kong 17-05-2026

Weather forecast Hong Kong tomorrow 17.05.2026: patchy rain possible, temperature from 23 °C to 25 °C.

Precipitation probability 100%. Wind up to 10.19 m/s (gusts 14.33 m/s). Air humidity 86–92%, atmospheric pressure 757–758 mm Hg, UV index up to 8.5.

Sunrise 05:43
Sunset 18:57

Waxing Crescent0% illuminated
Moonrise 05:37 · Moonset 19:41

Chart

Table

← Sat, May 16

Sun, May 17, 2026

Mon, May 18 →

Forecast from 23 °C to 25 °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)	24	24	24	24	23	24	24	24	24	24	25	24	24	25	24	25	25	24	24	24	24	24	24	24
Precipitation (mm/hr)	0.25	0.13	0.53	0.77	0.29	0.12	0.28	0.74	0.41	0.14	0.36	0.37	0.24	0.08	0.06	0.05	0.05	0.03	0.04	0.03	0.02	0	0.01	0.07

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	91	100	100	100	100	100	100	100	100	100	100	100	100	78	58
Rain chance (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	76	50	60	57	0	61	100

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)	7.39	4.11	4.61	6.5	9.11	8.31	7.61	8	10.19	9.5	8.19	9.11	9.69	9.61	9.69	9.61	9.89	10	9.61	9.39	9.31	9	8.5	7.39
Wind gust (m/s)	10.08	5.58	6.28	8.75	12.17	11.28	10.31	10.97	14.33	12.61	10.69	11.81	12.53	12.28	12.58	12.14	12.61	12.89	12.72	12.64	12.5	12.03	11.5	10.17
Wind direction (°)	ENE 62°	ESE 113°	ESE 118°	E 91°	ENE 65°	E 80°	E 80°	E 92°	ENE 75°	E 81°	E 95°	E 91°	E 90°	E 91°	E 89°	E 90°	E 90°	E 89°	E 90°	E 90°	E 86°	E 82°	ENE 78°	E 81°

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 (%)	90	89	89	92	90	90	91	91	89	88	88	88	88	86	86	86	86	87	88	88	87	87	88	88

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)	758	757	757	757	757	757	757	758	758	758	758	758	758	758	758	757	757	757	757	758	758	758	758	758

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	0.4	1.4	2.5	4.7	8.5	8.2	3.9	2.4	0.7	0.2	0	0	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)	14.9	15.3	15	13.8	12	11.6	11.8	11.5	10.4	9.4	9	9.2	9.5	9.3	9	10.5	13.2	12.7	12.5	12	11.8	10.8	11.3	12
PM10 (µg/m³)	17.9	17.8	17.1	15.5	13.5	13	13.4	13.3	12.4	11.3	11	11.4	11.9	11.8	11.3	12.5	15	14.7	14.6	14.1	14.1	13	13.8	14.4
Ozone (O₃) (µg/m³)	61	55	56	61	65	68	71	74	76	78	78	76	73	68	58	45	38	41	49	57	62	66	68	65
NO₂ (µg/m³)	41.8	47.4	47	43.3	39.6	36.8	34	30.9	27.1	23	20.3	19.2	19.4	21.6	27.9	36.2	40.7	37.8	31	25.4	22.4	20.5	20.2	22.6
SO₂ (µg/m³)	22.5	22.1	21.3	20.4	19.5	18.9	18.3	17.5	16.1	14.5	13.5	13.5	14	14.9	16.1	17.7	19	19.9	20.6	21.1	21.5	21.8	21.7	21.2
CO (µg/m³)	261.9	266.9	249.9	219.9	196.9	187.9	184.9	181.9	174.9	167.9	161.9	155.9	150.9	155.9	182.9	219.9	240.9	229.9	202.9	183.9	181.9	187.9	193.9	198.9

← Sat, May 16

Sun, May 17, 2026

Mon, May 18 →

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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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