5-day weather forecast Hong Kong 20-05-2026

Weather forecast Hong Kong Wednesday, May 20 20.05.2026: patchy rain possible, temperature from 25 °C to 28 °C.

Precipitation probability 78%. Wind up to 4.19 m/s (gusts 5.61 m/s). Air humidity 72–91%, atmospheric pressure 755–758 mm Hg, UV index up to 12.2.

Sunrise 05:42
Sunset 18:58

Waxing Crescent15% illuminated
Moonrise 08:49 · Moonset 22:54

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← Tue, May 19

Wed, May 20, 2026

Forecast from 25 °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)	25	25	25	25	25	25	25	26	26	27	27	28	28	28	28	28	28	28	28	27	26	27	27	26
Precipitation (mm/hr)	0	0	0.03	0.03	0.04	0.04	0.05	0.02	0.02	0.34	0.28	0	0.1	0.11	0	0.08	0.08	0	0.19	0.2	0	0.05	0.02	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 (%)	28	37	80	82	78	81	78	87	76	70	72	12	71	68	7	54	73	24	88	50	35	78	55	21
Rain chance (%)	0	0	78	85	78	83	100	85	75	100	100	0	100	100	0	100	100	0	100	100	0	100	63	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)	3.81	3.69	3.39	3.31	3	2.89	2.61	2.61	2.81	3.19	3.39	3.81	4.11	3.81	3.81	4.19	4	4	3.61	3.31	2.81	2.61	2.19	2.69
Wind gust (m/s)	5.58	5.39	5	4.83	4.44	4.33	3.86	3.58	3.67	4.47	4.53	4.64	5.61	5.39	4.5	5.33	5.11	5.11	5.06	4.89	4.08	3.89	3.33	3.97
Wind direction (°)	ENE 78°	E 81°	ENE 78°	E 89°	E 95°	ESE 102°	ESE 107°	ESE 110°	ESE 116°	ESE 123°	SE 133°	SE 144°	SSE 147°	SSE 155°	SSE 157°	SSE 167°	SSE 168°	SSE 153°	SSE 168°	S 169°	SE 139°	SSE 164°	SSE 156°	SE 127°

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	90	91	91	91	90	91	89	86	84	79	79	75	74	74	72	72	74	77	80	86	82	83	89

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)	757	757	756	756	756	756	757	757	758	758	758	757	757	756	756	755	755	755	756	756	757	757	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	0.5	2	4.6	7.8	10.8	12.2	12	10.1	6.8	3.3	1.2	0.3	0	0	0	0	0

← Tue, May 19

Wed, May 20, 2026

Hong Kong 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 →