August weather forecastPismo Beach, CA
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Pismo Beach, California, with an average temperature varying between 78.8°F (26°C) and 59.2°F (15.1°C).Temperature
The advent of August brings an average high-temperature of a still warm 78.8°F (26°C), exhibiting minor difference from the previous month. In Pismo Beach, the average low-temperature during the month of August is a refreshing 59.2°F (15.1°C).Humidity
In Pismo Beach, the average relative humidity in August is 64%.Rainfall
June and August are months with the least rain when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.Ocean temperature
August and October, with an average ocean temperature of 58.6°F (14.8°C), are months with the warmest seawater.Note: In 58.6°F (14.8°C), cold shock and rapid breathing can occur when swimming at temperatures below 50°F (10°C).
Daylight
In Pismo Beach, the average length of the day in August is 13h and 26min.On the first day of August, sunrise is at 6:12 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 7:30 pm PDT.
Sunshine
The months with the most sunshine are June through August, with an average of 12h of sunshine.UV index
June and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 6 during August translates into the following directions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Pismo Beach, CA
- Average high temperature in August: 78.8°F
The warmest month (with the highest average high temperature) is September (79.5°F).
The month with the lowest average high temperature is December (61.2°F).
- Average low temperature in August: 59.2°F
The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).
Average pressure in August
Pismo Beach, CA
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in August
Pismo Beach, CA
- Average wind speed in August: 5.7mph
The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in August
Pismo Beach, CA
- Average humidity in August: 64%
The month with the highest relative humidity is March (68%).
The month with the lowest relative humidity is October (58%).
Average rainfall in August
Pismo Beach, CA
- Average rainfall in August: 0.04"
The wettest month (with the highest rainfall) is March (1.61").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in August
Pismo Beach, CA
- Average rainfall days in August: 0.8 days
The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (0.8 days).
Average sea temperature in August
Pismo Beach, CA
- Average sea temperature in August: 58.6°F
The best months for swimming (with the highest average sea temperature) are August and October (58.6°F).
The coldest month (with the lowest average sea temperature) is April (54.3°F).
Average daylight in August /
Average sunshine in August
Pismo Beach, CA
- Average daylight in August: 13h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in August: 12h and 0min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days in August
Pismo Beach, CA
- Average sunshine days in August: 29.6 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (21 days).
Average UV index in August
Pismo Beach, CA
- Average UV index in August: 6
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in August
Pismo Beach, CA
- Average cloud cover in August: 6
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in August
Pismo Beach, 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).





