SpainAverage weather for San Juan in August
It's warm in August in San Juan with an average temperature of 29°C. Temperatures this month range from a low of 28°C to a high of 32°C. At night, you can expect temperatures between 21°C and 23°C.
Start of August
The month of August starts in San Juan with hot temps, averaging around 29°C during the day and nights around 22°C. No precipitation expected at the start of the month; it’ll be sunny.
Mid August
By mid-August, daytime temps rise to around 30°C, with nights around 23°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of August
By the end of August, the average daytime temperature in San Juan is around 30°C, while nighttime temps are about 23°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
According to weather history, there is only 8 mm of precipitation in August. The wind speed is around 5 Bft, mostly coming from the Northeast.
San Juan in August |
New York | ||
|---|---|---|---|
 Average temperature |
29°C | 30°C | |
 Max. temperature |
32°C | 31°C | |
| Min. temperature |
28°C | -5°C | |
 Total precipitation |
8 mm | 79 mm | |
| Rainy days |
1 day | 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 Juan?
Looking for great weather? August is a good time to be in San Juan. The temperatures are nice, and there’s little chance of rain this month.
Temperature records
With 44°C in 2021, San Juan reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 24°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of 18°C to a highest value of 33°C.
Check out the climate of San Juan for all months and discover the best travel time
Daily Temperature in August in San Juan
This chart shows the average daily high and low temperatures in August for San Juan, 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 Juan
The chart below shows the average daily precipitation in August for San Juan, 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 about 1 day of precipitation in San Juan.
Daily UV index in August in San Juan
This chart shows the average daily UV index in August in San Juan, 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 Juan over the years
This chart shows the average temperature in August in San Juan, measured in degrees Celsius, over the past few years.
Total precipitation in August in San Juan over the years
This chart shows the average precipitation in August in San Juan, 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 Juan
Click on any day in August to get detailed info about the usual weather on that day in San Juan. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in San Juan
Have you been to San Juan in August?
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Average weather in San Juan by month
Click on a month below to see detailed weather info for San Juan. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
