January in Newcastle averages a daily high of 25.5°C with nights around 20.1°C. Expect roughly 8.5 wet days totalling 68.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Newcastle is August–May.
Based on NEWCASTLE NOBBYS SIGNAL STATIO, AS (2.1km), 1995–2024. 30 years of January data.