Whats the weather like in Half Moon Bay, California?
Half Moon Bay usually has mild weather throughout the year. Hot weather is rare; the average annual days with highs of 90F or higher is only 0.2 days. Cold weather is also rare with an annual average of 2.5 days with lows of 32 or lower. Typical of central California, most of the rainfall falls from November to April. The normal annual rainfall is 27.96 inches. Snowfall along the coast in Half Moon Bay has never been measurable; however, snow flurries were observed on December 12, 1972, and February 5, 1976. There is often fog and overcast during the night and morning hours, usually clearing to offshore during the afternoon. Persistent sea breezes help to moderate the climate along the coast; farther from the ocean, in places such as Pilarcitos Canyon, days are often warmer and nights cooler than on the coast. January is the coolest month with an average high of 58.0F and an average low of 43.4F. September is the warmest month with an average high of 66.5F and an average low of 52.0F.
