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Newcastle Weather by Month
Average temperatures, rainfall and humidity for Newcastle, Australia, month by month, built from OpenWeather’s historical records. Use it to see what a typical Newcastle month looks like before you travel — then check the live Newcastle forecast for the days ahead.
Warmest month
January
28°C average high
Coolest month
July
9°C average low
Wettest month
March
101 mm of rain
Driest month
September
48 mm of rain
Average temperature and rainfall in Newcastle by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 28°C | 20°C | 13°C / 44°C | 67 mm | 76% | 16 km/h |
| February | 27°C | 20°C | 12°C / 44°C | 62 mm | 77% | 15 km/h |
| March | 26°C | 19°C | 11°C / 38°C | 101 mm | 78% | 14 km/h |
| April | 24°C | 15°C | 8°C / 34°C | 99 mm | 78% | 13 km/h |
| May | 21°C | 12°C | 5°C / 28°C | 66 mm | 79% | 14 km/h |
| June | 18°C | 10°C | 1°C / 24°C | 76 mm | 78% | 15 km/h |
| July | 18°C | 9°C | -1°C / 25°C | 55 mm | 74% | 16 km/h |
| August | 19°C | 10°C | 1°C / 29°C | 51 mm | 70% | 15 km/h |
| September | 22°C | 12°C | 4°C / 35°C | 48 mm | 67% | 16 km/h |
| October | 24°C | 14°C | 5°C / 38°C | 51 mm | 71% | 15 km/h |
| November | 26°C | 16°C | 8°C / 41°C | 56 mm | 71% | 16 km/h |
| December | 28°C | 18°C | 10°C / 43°C | 57 mm | 71% | 16 km/h |
Best time to visit Newcastle
The most comfortable time to visit Newcastle is generally September to November, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around March, totalling about 789 mm a year.
Travellers who prefer heat should aim for January, when highs average 28°C. March is the month to avoid if rain would spoil your plans — it averages 101 mm, roughly 2× the rainfall of the driest month (September).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Newcastle forecast for what is happening now.