United StatesAverage weather for San Diego in August
It's warm in August in San Diego with an average temperature of 26°C. Temperatures this month range from a low of 25°C to a high of 27°C. At night, you can expect temperatures between 20°C and 21°C.
Start of August
The month of August starts in San Diego with warm temps, averaging around 26°C during the day and nights around 21°C. No precipitation expected at the start of the month; it’ll be sunny.
With the temperature difference between day and night, it’s smart to wear layers.
Mid August
By mid-August, daytime temps stay steady at around 26°C, with nights around 21°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
Since it cools down at night, it’s a good idea to wear layers.
End of August
By the end of August, the average daytime temperature in San Diego is around 27°C, while nighttime temps are about 21°C. No precipitation expected at the end of the month; it’ll be mostly sunny.
Because temperatures drop in the evening, wearing layers is recommended.
Water temperature
The water temperature at San Diego is 22°C this month. Pleasant for a swim.
According to weather history, there is only 5,4 mm of precipitation in August. The wind speed is around 4 Bft, mostly coming from the West.
San Diego in August |
New York | ||
|---|---|---|---|
 Average temperature |
26°C | 30°C | |
 Max. temperature |
27°C | 31°C | |
| Min. temperature |
25°C | -5°C | |
 Total precipitation |
5,4 mm | 79 mm | |
| Rainy days |
0 days | 13 days | |
July
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is August a good time to visit San Diego?
Looking for great weather? August is a good time to be in San Diego. The temperatures are nice, and there’s not too much rain.
Temperature records
With 32°C in 2015, San Diego reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 20°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 16°C to a highest value of 26°C.
Check out the climate of San Diego for all months and discover the best travel time
Daily Temperature in August in San Diego
This chart shows the average daily high and low temperatures in August for San Diego, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in August in San Diego
The chart below shows the average daily precipitation in August for San Diego, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for August, you can expect it to stay dry all month in San Diego.
Daily UV index in August in San Diego
This chart shows the average daily UV index in August in San Diego, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in San Diego over the years
This chart shows the average temperature in August in San Diego, measured in degrees Celsius, over the past few years.
Total precipitation in August in San Diego over the years
This chart shows the average precipitation in August in San Diego, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in August for San Diego
Click on any day in August to get detailed info about the usual weather on that day in San Diego. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in San Diego
Have you been to San Diego in August?
Share your weather experience in August in San Diego.
Average weather in San Diego by month
Click on a month below to see detailed weather info for San Diego. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of San Diego for all months at once
