August weather forecastPacific Grove, CA
August
Weather in August
August, the last month of the summer in Pacific Grove, is also an agreeable month, with temperature in the range of an average high of 72.1°F (22.3°C) and an average low of 55.2°F (12.9°C).Temperature
Pacific Grove notes an average high-temperature of a still agreeable 72.1°F (22.3°C) in August, displaying minor variation from July. Throughout August, Pacific Grove anticipates an average low-temperature of 55.2°F (12.9°C).Humidity
The average relative humidity in August is 75%.Rainfall
The months with the least rainfall are July and August Rain falls for 1.1 days and accumulates 0.08" (2mm) of rain.Ocean temperature
August and September, with an average ocean temperature of 58.1°F (14.5°C), are months with the warmest seawater.Note: Swimming in 58.1°F (14.5°C) at temperatures under 50°F (10°C) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 55.4°F (13°C) feels frosty.
Daylight
In Pacific Grove, the average length of the day in August is 13h and 31min.On the first day of August, sunrise is at 6:14 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:36 pm PDT.
Sunshine
In Pacific Grove, the average sunshine in August is 11.9h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 5 in August translates into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Pacific Grove, CA
- Average high temperature in August: 72.1°F
The warmest month (with the highest average high temperature) is September (72.5°F).
The month with the lowest average high temperature is December (57.2°F).
- Average low temperature in August: 55.2°F
The months with the highest average low temperature are August and September (55.2°F).
The coldest month (with the lowest average low temperature) is February (46°F).
Average pressure in August
Pacific Grove, 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
Pacific Grove, CA
- Average wind speed in August: 5.6mph
The windiest months (with the highest average wind speed) are April and May (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in August
Pacific Grove, CA
- Average humidity in August: 75%
The months with the highest relative humidity are March and May (76%).
The month with the lowest relative humidity is November (68%).
Average rainfall in August
Pacific Grove, CA
- Average rainfall in August: 0.08"
The wettest month (with the highest rainfall) is December (2.4").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in August
Pacific Grove, CA
- Average rainfall days in August: 1.1 days
The month with the highest number of rainy days is March (12.5 days).
The month with the least rainy days is August (1.1 days).
Average sea temperature in August
Pacific Grove, CA
- Average sea temperature in August: 58.1°F
The best months for swimming (with the highest average sea temperature) are August and September (58.1°F).
The coldest month (with the lowest average sea temperature) is April (53.8°F).
Average daylight in August /
Average sunshine in August
Pacific Grove, CA
- Average daylight in August: 13h and 30min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in August: 11h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in August
Pacific Grove, CA
- Average sunshine days in August: 27.2 days
The month with the most sunshine days is July (27.3 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in August
Pacific Grove, CA
- Average UV index in August: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in August
Pacific Grove, CA
- Average cloud cover in August: 12
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in August
Pacific Grove, 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).





