5-day weather forecast Hong Kong 21-05-2026
Weather forecast Hong Kong Thursday, May 21 21.05.2026: light rain shower, temperature from 25 °C to 26 °C.
Precipitation probability 100%. Wind up to 4.69 m/s (gusts 6.42 m/s). Air humidity 85–93%, atmospheric pressure 756–758 mm Hg, UV index up to 7.
Sunrise 05:42
Sunset 18:59
Sunset 18:59
Waxing Crescent24% illuminated
Moonrise 09:58 · Moonset 23:44
Moonrise 09:58 · Moonset 23:44
Chart
Table
Thu, May 21, 2026
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Patchy rain possible | 26 °C | 100% (0.06 mm/hr) | 89% | 85% | 757 mm Hg | ESE 116° 1.69 (2.47) m/s | 0 |
| 01:00 |  Light rain shower | 26 °C | 100% (0.22 mm/hr) | 87% | 85% | 757 mm Hg | ESE 123° 2.19 (3.28) m/s | 0 |
| 02:00 |  Light drizzle | 26 °C | 100% (0.59 mm/hr) | 100% | 86% | 756 mm Hg | SE 146° 2.61 (4) m/s | 0 |
| 03:00 | Light rain shower | 26 °C | 100% (0.47 mm/hr) | 100% | 87% | 756 mm Hg | SSE 154° 2.61 (3.94) m/s | 0 |
| 04:00 | Patchy rain possible | 26 °C | 100% (0.29 mm/hr) | 87% | 87% | 756 mm Hg | SSE 155° 2.5 (3.75) m/s | 0 |
| 05:00 | Light rain shower | 26 °C | 100% (0.39 mm/hr) | 51% | 87% | 756 mm Hg | SSE 154° 2.39 (3.58) m/s | 0 |
| 06:00 |  Light rain shower | 26 °C | 100% (0.5 mm/hr) | 64% | 88% | 757 mm Hg | SSE 156° 2.61 (3.97) m/s | 6 |
| 07:00 | Light rain shower | 26 °C | 100% (0.58 mm/hr) | 100% | 86% | 758 mm Hg | SSE 161° 2.89 (4.39) m/s | 6 |
| 08:00 | Light rain shower | 26 °C | 100% (0.74 mm/hr) | 100% | 86% | 758 mm Hg | S 176° 3.61 (5.06) m/s | 6 |
| 09:00 |  Light rain | 26 °C | 100% (1.64 mm/hr) | 100% | 90% | 758 mm Hg | SSW 194° 4.69 (6.42) m/s | 6 |
| 10:00 | Light rain | 25 °C | 100% (1.11 mm/hr) | 94% | 91% | 758 mm Hg | SSW 194° 3.61 (4.97) m/s | 6 |
| 11:00 | Light rain shower | 25 °C | 100% (2.4 mm/hr) | 87% | 91% | 758 mm Hg | SSW 204° 3.89 (5.81) m/s | 6 |
| 12:00 |  Moderate rain | 25 °C | 100% (3.22 mm/hr) | 90% | 93% | 758 mm Hg | SW 220° 3.39 (4.5) m/s | 6 |
| 13:00 | Light rain shower | 25 °C | 100% (1.57 mm/hr) | 89% | 93% | 758 mm Hg | SW 236° 2.61 (4.17) m/s | 5 |
| 14:00 | Light rain shower | 25 °C | 100% (0.25 mm/hr) | 84% | 92% | 758 mm Hg | WSW 237° 2.89 (3.92) m/s | 6 |
| 15:00 |  Patchy rain possible | 25 °C | 100% (0.2 mm/hr) | 77% | 91% | 758 mm Hg | WSW 238° 2.61 (3.5) m/s | 6 |
| 16:00 | Light rain shower | 25 °C | 100% (0.1 mm/hr) | 70% | 90% | 757 mm Hg | WSW 238° 2.19 (3) m/s | 6 |
| 17:00 | Patchy rain possible | 26 °C | 81% (0.01 mm/hr) | 62% | 88% | 757 mm Hg | WSW 238° 1.89 (2.53) m/s | 6 |
| 18:00 |  Partly cloudy | 26 °C | 54% | 50% | 88% | 757 mm Hg | SSW 192° 1.69 (2.31) m/s | 7 |
| 19:00 | Patchy rain possible | 26 °C | 27% | 38% | 88% | 758 mm Hg | SE 145° 1.39 (2) m/s | 0 |
| 20:00 |  Partly cloudy | 26 °C | 0% | 26% | 88% | 758 mm Hg | E 99° 1.19 (1.75) m/s | 0 |
| 21:00 |  Clear | 26 °C | 0% | 24% | 88% | 758 mm Hg | E 99° 1.5 (2.31) m/s | 0 |
| 22:00 | Partly cloudy | 26 °C | 0% | 21% | 88% | 758 mm Hg | E 100° 1.89 (2.81) m/s | 0 |
| 23:00 | Clear | 26 °C | 0% | 18% | 88% | 758 mm Hg | E 100° 2.19 (3.33) m/s | 0 |
Thu, May 21, 2026
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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.