5-day weather forecast Sydney 18-05-2026
Weather forecast Sydney Monday, May 18 18.05.2026: partly cloudy, temperature from 16 °C to 20 °C.
Precipitation probability 81%. Wind up to 3.39 m/s (gusts 4.89 m/s). Air humidity 66–89%, atmospheric pressure 762–765 mm Hg, UV index up to 2.5.
Sunrise 06:42
Sunset 17:01
Sunset 17:01
Waxing Crescent2% illuminated
Moonrise 08:16 · Moonset 17:56
Moonrise 08:16 · Moonset 17:56
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Partly cloudy | 17 °C | 0% | 45% | 84% | 765 mm Hg | WNW 303° 1.81 (3.25) m/s | 0 |
| 01:00 |  Cloudy | 17 °C | 0% | 85% | 84% | 765 mm Hg | W 276° 1.81 (3.22) m/s | 0 |
| 02:00 | Partly cloudy | 17 °C | 0% | 59% | 84% | 765 mm Hg | WNW 294° 1.39 (2.53) m/s | 0 |
| 03:00 | Partly cloudy | 17 °C | 0% | 47% | 83% | 764 mm Hg | WNW 298° 1.39 (2.47) m/s | 0 |
| 04:00 | Partly cloudy | 16 °C | 0% | 47% | 85% | 764 mm Hg | WNW 298° 1.69 (3.11) m/s | 0 |
| 05:00 | Partly cloudy | 16 °C | 0% | 29% | 86% | 764 mm Hg | WNW 282° 1.69 (3.11) m/s | 0 |
| 06:00 | Partly cloudy | 16 °C | 0% | 46% | 85% | 764 mm Hg | WNW 297° 1.69 (3.11) m/s | 0 |
| 07:00 |  Patchy rain possible | 16 °C | 81% (0.04 mm/hr) | 73% | 85% | 765 mm Hg | WNW 284° 1.69 (3) m/s | 0 |
| 08:00 |  Partly cloudy | 17 °C | 0% | 50% | 81% | 765 mm Hg | WNW 282° 1.81 (2.75) m/s | 0.4 |
| 09:00 | Partly cloudy | 18 °C | 0% | 37% | 76% | 765 mm Hg | WNW 287° 1.81 (2.42) m/s | 1 |
| 10:00 | Partly cloudy | 19 °C | 0% | 49% | 73% | 765 mm Hg | W 268° 1.69 (2.19) m/s | 1.4 |
| 11:00 | Partly cloudy | 20 °C | 0% | 54% | 69% | 764 mm Hg | W 278° 1.11 (1.36) m/s | 1.8 |
| 12:00 | Partly cloudy | 20 °C | 0% | 52% | 66% | 764 mm Hg | NNW 340° 0.69 (0.86) m/s | 2.5 |
| 13:00 | Partly cloudy | 20 °C | 0% | 51% | 66% | 764 mm Hg | NNW 332° 1.19 (1.58) m/s | 1.3 |
| 14:00 | Partly cloudy | 20 °C | 0% | 50% | 67% | 763 mm Hg | NNW 340° 1 (1.36) m/s | 0.7 |
| 15:00 | Partly cloudy | 20 °C | 0% | 51% | 69% | 763 mm Hg | NNW 342° 1.81 (2.44) m/s | 0.4 |
| 16:00 | Partly cloudy | 20 °C | 0% | 55% | 72% | 763 mm Hg | NNE 20° 1.89 (2.67) m/s | 0.2 |
| 17:00 |  Overcast | 19 °C | 0% | 99% | 76% | 763 mm Hg | NNE 27° 2.19 (3.36) m/s | 0 |
| 18:00 | Cloudy | 19 °C | 0% | 86% | 79% | 763 mm Hg | NNE 29° 2.69 (4.08) m/s | 0 |
| 19:00 |  Light rain shower | 19 °C | 100% (0.16 mm/hr) | 78% | 81% | 763 mm Hg | NNE 13° 3 (4.61) m/s | 0 |
| 20:00 |  Patchy rain possible | 19 °C | 100% (0.09 mm/hr) | 100% | 81% | 763 mm Hg | N 356° 3.19 (4.78) m/s | 0 |
| 21:00 | Light rain shower | 18 °C | 100% (0.3 mm/hr) | 61% | 85% | 763 mm Hg | N 2° 3.11 (4.53) m/s | 0 |
| 22:00 | Patchy rain possible | 18 °C | 100% (0.1 mm/hr) | 100% | 85% | 763 mm Hg | N 355° 3.39 (4.89) m/s | 0 |
| 23:00 |  Patchy light drizzle | 17 °C | 100% (0.35 mm/hr) | 61% | 89% | 762 mm Hg | N 358° 3 (4.28) m/s | 0 |
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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.