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Puerto Rico weather in August 2025
Expect 86°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Puerto Rico in August. Check more long-term weather averages for Puerto Rico in August before you book your next holiday to Puerto Rico in 2025/2026.
- 86°F max day temperature
86 - 9 hours of sunshine per day
- 20 days with some rainfall
20 - 75°F min night temperature
75 - 13 hours of daylight per day
13 - High heat & humidity
H - 7.7 inches of monthly rainfall
7.7 - 11+ (Extreme) UV index
11 - 82°F sea temperature
82
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The August weather guide for Puerto Rico (San Juan) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Top Puerto Rico destinations
Below are average maximum temperatures at popular countries, regions and places in Puerto Rico in August. Select a holiday destination to see more weather parameters.
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Metric (°C) | Imperial (°F)
More about Puerto Rico
How hot is it in Puerto Rico in August?
Daytime temperatures usually reach 86°F in San Juan, Puerto Rico in August with high heat and humidity, falling to 75°F at night.
How sunny is it in Puerto Rico in August?
There are normally 9 hours of bright sunshine each day in San Juan, Puerto Rico in August - that's 68% of daylight hours.
How warm is the sea around Puerto Rico in August?
The average sea temperature around San Juan, Puerto Rico in August is 82°F.
Does it rain in Puerto Rico in August?
There are usually 20 days with some rain in San Juan, Puerto Rico in August and the average monthly rainfall is 7.7 inches.
What is the chance of a hurricane in Puerto Rico in August?
On average less than 1 day in August in San Juan, Puerto Rico is likely to be affected by the passage of one or more tropical storms.
Puerto Rico August sunrise & sunset times
Browse the sunrise and sunset times for Puerto Rico in August 2025. Select a month to view Puerto Rico sunrise and sunset times for the next 12 months. The Puerto Rico sunrise and sunset times shown below are for San Juan.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 06:02 | 18:59 |
| Saturday, 16th August 2025 | 06:07 | 18:50 |
| Sunday, 31st August 2025 | 06:10 | 18:39 |
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