Half-moon Bay Weather in December

In Half-moon Bay, December brings moderate daytime temperatures around 16°C (61°F), with nights cooling to 10°C (50°F). Expect quite a bit of rainfall this month.

Rainfall in Half-moon Bay in December

Based on our climate data of the past 30 years, about 23 days of rain are anticipated, with 125 mm (4.9 in) on average. 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 Half-moon Bay in December

Daytime highs in Half-moon Bay in December reach 16°C (61°F), with nights around 10°C (50°F). The difference between afternoon and evening temperatures is usually noticeable. At 10°C (50°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Half-moon Bay in December

There are approximately 192 hours of sunshine this month, resulting in mostly clear days.

If you're inclined towards comfortable temperatures and drier conditions, December is a good time to visit Half-moon Bay.