Check out our current live radar and weather forecasts for Half Moon Bay, California to help plan your day Want to know what the weather is now? No PWS. WARNING: All data are preliminary and subject to revision. Half Moon Bay, CA - Weather forecast from Theweather.com. The primary swell is predicted to be 5.0 m and 19s period with a secondary swell of 0.7 m and 6s. Half Moon Bay, CA Weather Calendar star_ratehome. zoom out. Wind, waves & weather forecast Half Moon Bay Beach / California, United States for kitesurfing, windsurfing, surfing & sailing for Half Moon Bay, California Long range weather outlook for Half Moon Bay includes 14 day forecast summary: Reviewing the forecast for Half Moon Bay Over the next 14 days and the average daytime maximum temperature will be around 14°C, with a high for the two weeks of 17°C expected on the afternoon of Sunday 15th. Find local weather forecasts for Half Moon Bay, United States throughout the world Get the latest 7 Day weather for Half Moon Bay, CA, US including weather news, video, warnings and interactive maps from the weather experts. Reset Map, or Add PWS. Link to long-term record at Half Moon Bay Airport Link to NOAA weather station Data and content ©2020, Balance Hydrologics, Inc. Half Moon Bay 5 day forecast with weather outlook providing day and night summary including precipitation, high and low temperatures presented in Fahrenheit and Celsius, sky conditions, rain chance, sunrise, sunset, wind chill, and wind speed with direction. Location: Half Moon Bay, CA. Weather conditions with updates on temperature, humidity, wind speed, snow, pressure, etc. Nearby Weather Stations. View the latest weather forecasts, maps, news and alerts on Yahoo Weather. Not intended for flood warning purposes. Best Forecast Surf Conditions for Half Moon Bay this week: The surf forecast for Half Moon Bay over the next 7 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Nov 24) at 7PM. Half Moon Bay is a coastal city in San Mateo County, California, United States, approximately 25 miles (40 km) south of San Francisco.Its population was 11,324 as of the 2010 census.Immediately at the north of Half Moon Bay is Pillar Point Harbor and the unincorporated community of Princeton-by-the-Sea.The urban area had a population of 20,713 at the same census. Current conditions at Half Moon Bay Airport (KHAF) Lat: 37.5136°NLon: 122.4996°WElev: 65ft.