Half Moon Bay Weather in August

Half Moon Bay in August sees pleasant temperatures, with highs around 22°C (72°F) and overnight lows of 12°C (54°F). With just 3.6 mm (0.1 in) of rainfall on average, rain is rarely an issue.

Rainfall in Half Moon Bay in August

Historically, August sees about 5 days of rain, with a monthly average of 3.6 mm (0.1 in). Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.

Temperature in Half Moon Bay in August

August in Half Moon Bay is generally excellent, with days reaching 22°C (72°F) and nights settling around 12°C (54°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With lows of 12°C (54°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Half Moon Bay in August

With approximately 288 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Half Moon Bay in August

August sees wind speeds averaging 6 m/s (12 knots). You'll experience strong winds that cause whole trees to sway and require effort when walking against them. As an average, expect variation from moderate breezes to particularly windy days that affect daily routines.

Average water temperature in August

At 14°C (57°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September and October typically offer the best weather for Half Moon Bay.