Newcastle weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: August – May
What is the weather like in Newcastle in August?
In August, Newcastle is mild: daytime highs average 18 °C, and nights cool down to about 10 °C. The sea averages 18.3 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8 hours a day. Rain falls on about 7 days, adding up to 44 mm. All in all, August is an excellent month for a holiday in Newcastle.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 76 | 89 | 92 |
| Day | 16° | 18° | 21° |
| Night | 10° | 10° | 13° |
| Sea | 19° | 18° | 19° |
| Sun | 6 h | 8 h | 8 h |
| Rain days | 7 | 7 | 6 |
More details for August
- Daylight
- 10 h 52 min06:32 – 17:24
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 35 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+10Australia/Sydney
How the score comes together
- Temperatureweight 50 %97 %
- Sunshineweight 20 %80 %
- Few rainy daysweight 30 %81 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Sunscreen
- A jumper for the evenings
Newcastle in August: quick answers
Is Newcastle hot in August?
No. In August, Newcastle is mild: daytime highs average 18 °C and nights drop to about 10 °C.
Can you swim in Newcastle in August?
Only if you don't mind cold water: in August the sea averages just 18.3 °C. Comfortable swimming is possible from November to May.
Does it rain much in Newcastle in August?
Rain falls on about 7 days, adding up to 44 mm.
Newcastle month by month
The whole year in NewcastleAll destinations: AustraliaWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences