Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August's beginning signals an average high-temperature of a still refreshing 65.8°F (18.8°C), barely different from July's 65.1°F (18.4°C). In August, the recorded average low-temperature in Half Moon Bay, California, is a mild 55.9°F (13.3°C).Humidity
August is the most humid month in Half Moon Bay, with an average relative humidity of 82%.Rainfall
In Half Moon Bay, during August, the rain falls for 5.3 days and regularly aggregates up to 0.16" (4mm) of precipitation. Throughout the year, there are 76.8 rainfall days, and 8.54" (217mm) of precipitation is accumulated.Daylight
The average length of the day in August in Half Moon Bay is 13h and 34min.On the first day of the month, sunrise is at 6:14 am and sunset at 8:17 pm. On the last day of August, in Half Moon Bay, California, sunrise is at 6:39 am and sunset at 7:39 pm PDT.
Sunshine
In Half Moon Bay, California, the average sunshine in August is 11.2h.UV index
June, August and September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In August, the maximum UV index of 5 suggests these recommendations:
Heed the precautions - It is counselled to guard against solar damage. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What is the average August temperature in Half Moon Bay?
What is the most humid month in Half Moon Bay?
What is the average humidity in August in Half Moon Bay?
How many days does it rain in August in Half Moon Bay?
How many hours of daylight does Half Moon Bay have in August?
What time are sunrise and sunset in August in Half Moon Bay?
How long on average sun shines in August in Half Moon Bay?
What are the months with the highest UV index in Half Moon Bay?
How high is the UV index in August in Half Moon Bay?
Average temperature in August
Half Moon Bay, CA
- Average high temperature in August: 65.8°F
The warmest month (with the highest average high temperature) is September (66.9°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in August: 55.9°F
The month with the highest average low temperature is September (56.7°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).
Average pressure in August
Half Moon Bay, CA
- Average pressure in August: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in August
Half Moon Bay, CA
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in August
Half Moon Bay, CA
- Average humidity in August: 82%
The month with the highest relative humidity is August (82%).
The months with the lowest relative humidity are November and December (72%).
Average rainfall in August
Half Moon Bay, CA
- Average rainfall in August: 0.16"
The wettest month (with the highest rainfall) is February (1.61").
The driest months (with the least rainfall) are June and July (0.12").
Average rainfall days in August
Half Moon Bay, CA
- Average rainfall days in August: 5.3 days
The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is June (3 days).
Average daylight in August /
Average sunshine in August
Half Moon Bay, CA
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 11h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in August
Half Moon Bay, CA
- Average sunshine days in August: 18.8 days
The month with the most sunshine days is October (24.6 days).
The months with the least sunshine days are March and August (18.8 days).
Average UV index in August
Half Moon Bay, CA
- Average UV index in August: 5
The months with the highest UV index are June, August and September (UV index 5).
The months with the lowest UV index are January, February, March, April, May, July, October, November and December (UV index 4).
Average cloud cover in August
Half Moon Bay, CA
- Average cloud cover in August: 23
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 18).
Average visibility in August
Half Moon Bay, CA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Half Moon Bay, California, USA
Weather forecast for your location
2. Allow the app to use your location
