San Juan in august: average Weather, Temperature and Climate
Weather in San Juan in august 2025
The weather in San Juan in august comes from statistical datas on the last years. You can view the weather statistics for the whole month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
perfect weather UV index: 7
Weather at 6am
83°F
Partly Cloudy
48% of time
27%
21%
3%
Weather at 12pm
86°F
Clear/Sunny
52% of time
25%
19%
3%
Weather at 6pm
83°F
Clear/Sunny
44% of time
39%
14%
2%
Weather at 3am
81°F
44%
28%
22%
4%
Evolution of daily average temperature and precipitation in San Juan in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in San Juan in august.
The climate of San Juan in august is perfect
The climate in august in San Juan is wet (with 3.6in of rainfall over 4 days). It should be noted a worsening from the previous month since in july there is an average of 2.4in of rainfall over 3 days.
The climate quite nice in that area this month. Temperatures are up to 86°F. The minimum is 83°F. Thus, the mean temperature average in august in San Juan is 85°F. Note that seasonal normals are in contrast with those observed in San Juan in august with a maximum record of 95°F in 2021 and a minimum record of 72°F in 2021. You can plan to have about 17 days with temperatures up to 86°F, or 55 of time.
In august in San Juan, the days on average last 12:45. The sun rises at 06:06 and sets at 18:51.
With a correct weather, this month is okay (but not the best) to go there in Puerto Rico.
Seasonal average climate and temperature of San Juan in august
Check below seasonal norms These statistics are set from the weather statements earlier years of the month of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 85°F | ||||
| Highest temperature | 86°F | ||||
| Lowest temperature | 83°F | ||||
| Highest record temperature | 95°F (2021) | ||||
| Lowest record temperature | 72°F (2021) | ||||
| Number of days at +86°F | 17 day(s) (55%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 85°F | ||||
| Lowest sea temperature | 83°F | ||||
| Highest sea temperature | 86°F | ||||
| Wind | |||||
| Wind speed | 22km/h | ||||
| Wind temperature | 83°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.6in | ||||
| Number of days with rainfall | 4 day(s) (13%) | ||||
| Record daily rainfall | 7.1in (2021) | ||||
| Other climate data | |||||
| Humidity | 81% | ||||
| Visibility | 9.72km | ||||
| Cloud cover | 32% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:06 | ||||
| Time of sunset | 18:51 | ||||
| Length of day | 12:45 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | perfect | ||||
How was the weather last august?
Here is the day by day recorded weather in San Juan in august 2024:
79°F to 86°F
81°F to 85°F
79°F to 86°F
79°F to 86°F
81°F to 86°F
81°F to 86°F
79°F to 86°F
81°F to 86°F
79°F to 86°F
81°F to 85°F
79°F to 86°F
79°F to 86°F
81°F to 86°F
79°F to 81°F
81°F to 86°F
81°F to 88°F
79°F to 86°F
81°F to 88°F
81°F to 86°F
81°F to 86°F
79°F to 85°F
79°F to 86°F
81°F to 86°F
79°F to 85°F
79°F to 86°F
79°F to 86°F
81°F to 88°F
79°F to 86°F
81°F to 88°F
81°F to 86°F
79°F to 86°F
Map: other cities in Puerto Rico in august
Cities near San Juan:
| Bayamón in august | good weather |
| Dorado in august | good weather |
| Carolina in august | good weather |
| Vega Alta in august | good weather |
| Caguas in august | good weather |
| Comerio in august | tolerable weather |
| Cidra in august | tolerable weather |
| Cayey in august | tolerable weather |
| Aibonito in august | tolerable weather |
| Manati in august | good weather |
| Luquillo in august | tolerable weather |
| Humacao in august | tolerable weather |
Click over cities on the map for information about the weather in august.
San Juan
perfect weather
good
tolerable
bad
very bad
Weather data for San Juan in august:
Weather data for San Juan for august are derived from an average of the weather forecast since 2009 in San Juan. There is a margin of error and these forecasts are to be considered as general information only. The weather in San Juan can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to San Juan.