August weather forecastMission Viejo, CA
August
Weather in August
August, the last month of the summer in Mission Viejo, is also a moderately hot month, with an average temperature ranging between max 80.8°F (27.1°C) and min 64°F (17.8°C).Temperature
August is the month when Mission Viejo sees the highest average temperatures, with a high of 80.8°F (27.1°C) and a low of 64°F (17.8°C).Heat index
In August, the heat index is evaluated at 84.2°F (29°C). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.Note that heat index values are valued for light wind and location in the shade. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
In Mission Viejo, the average relative humidity in August is 64%.Rainfall
In Mission Viejo, in August, during 3.1 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. In Mission Viejo, during the entire year, the rain falls for 64.1 days and collects up to 5.67" (144mm) of precipitation.Daylight
In Mission Viejo, the average length of the day in August is 13h and 22min.On the first day of the month, sunrise is at 6:03 am and sunset at 7:50 pm. On the last day of August, sunrise is at 6:24 am and sunset at 7:16 pm PDT.
Sunshine
July and August, with an average of 12h of sunshine, are months with the most sunshine.UV index
June through September, 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 vulnerability from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 6 during August translates into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Mission Viejo, CA
- Average high temperature in August: 80.8°F
The warmest month (with the highest average high temperature) is August (80.8°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in August: 64°F
The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).
Average pressure in August
Mission Viejo, CA
- Average pressure in August: 29.89"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed in August
Mission Viejo, CA
- Average wind speed in August: 4.5mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in August
Mission Viejo, CA
- Average humidity in August: 64%
The months with the highest relative humidity are May and June (70%).
The month with the lowest relative humidity is November (56%).
Average rainfall in August
Mission Viejo, CA
- Average rainfall in August: 0.35"
The wettest month (with the highest rainfall) is December (0.98").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in August
Mission Viejo, CA
- Average rainfall days in August: 3.1 days
The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is June (2.3 days).
Average daylight in August /
Average sunshine in August
Mission Viejo, CA
- Average daylight in August: 13h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in August: 12h and 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in August
Mission Viejo, CA
- Average sunshine days in August: 24.4 days
The months with the most sunshine days are January and August (24.4 days).
The month with the least sunshine days is May (19.5 days).
Average UV index in August
Mission Viejo, CA
- Average UV index in August: 6
The months with the highest UV index are June, July, August and September (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
Mission Viejo, CA
- Average cloud cover in August: 7
The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in August
Mission Viejo, 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).
