December in Poole averages a daily high of 10°C with nights around 4.6°C. Expect roughly 16.4 wet days totalling 102.3mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Poole is June–September.
Based on SWANAGE, UK (11.3km), 1995–2024. 28 years of December data.