Sumner Weather in December

During December, Sumner experiences low daytime temperatures of 8°C (46°F) and cooler nights around 1°C (34°F). As part of the winter season, expect quite a bit of rainfall. Around 153 mm (6 in) is typical.

Rainfall in Sumner in December

Rain is expected on roughly 21 days, totalling around 153 mm (6 in) for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.

Temperature in Sumner in December

In December, Sumner gets low temperatures, with highs of 8°C (46°F). Nights cool to around 1°C (34°F). During December, you'll experience the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. Nights drop to 1°C (34°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. This is usually the coldest month of the year, so be sure to prepare with plenty of winter gear.

Sunshine in Sumner in December

This month is characterized by fewer sunny days, with about 61 hours of sunshine. It's great for those who appreciate cooler, less sunny days.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Sumner. Our weather planner can help you explore destinations with more pleasant weather conditions.