Weather in South Boston in December

South Boston, United States averages a high of 5.2°C (41.4°F) and low of -1.4°C (29.5°F) in December, with 10 rain days and 5.8 hours of daily sunshine. Travel score: 47.3/100 (Mixed). The best time to visit South Boston is August.

High
5°C41°F
Low
-1°C29°F
🌧️
10
rain days
☀️
5.8
hrs/day sunshine
💧
72%
humidity
47Mixed

December in South Boston is cold and occasionally wet — mixed conditions — plan indoor alternatives.

What are the average temperatures in South Boston?

JanFebMarAprMayJunJulAugSepOctNovDec5°-1°

How much does it rain in South Boston in December?

South Boston receives an average of 110.4mm of rainfall across 10 rainy days in December. The annual total is 1110.6mm.

JanFebMarAprMayJunJulAugSepOctNovDec10d

What should I pack for South Boston in December?

Essentials

👟
Comfortable walking shoes
Essential for exploring the city
🧥
Warm coat
Cool weather with highs around 5°C
🧶
Sweaters and warm layers
Layer up for comfort
🧤
Warm gloves
Cold nights around -1°C
🧣
Warm scarf
Protect against cold winds

Traveling to United States in December?

Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.

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What is the weather like in other months in South Boston?

Data based on 1994–2024 averages · Last updated: 2024-12-31