Weather · Half Moon Bay, United States

Half Moon Bay Weather in December

Expect cool, very wet in Half Moon Bay through December: highs near 14°C, lows around 7°C, 231mm of rain across the month. It's not the easiest month, weather-wise.

Avg high

14°C

57°F

Avg low

7°C

45°F

Rainfall

231mm

#1 wettest of 12

What to pack

Layers, plus a jacket for mornings and nights. Pack a rain jacket or travel umbrella, showers are frequent this month.

← November All 12 months →January →

Visiting in December? Best things to do in Half Moon Bay (December is quieter, so the hidden gems are less crowded)

Timing a trip around the weather? A Local Friend in Half Moon Bay builds it around the season for you.