January in Nanaimo averages a daily high of 7°C with nights around 3.6°C. Expect roughly 19.8 wet days totalling 140.4mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Nanaimo is July–August.
Based on ENTRANCE ISLAND, BC CA (10.6km), 1995–2024. 23 years of January data.