San Juan Weather in August
Puerto Rico · August climate averages and travel tips
Avg high31°C (87°F)
Avg low27°C (80°F)
Rainfall132 mm (5.2 in)
RatingPoor 3.4/10
San Juan in August sees daytime temperatures around 31°C (87°F), dropping to about 27°C (80°F) at night. The month is wet, with about 132 mm (5.2 in) of rain spread over 26 days. Humidity averages 79%, so it feels sticky and hotter than the thermometer suggests. You get roughly 12.6 hours of daylight and frequently cloudy skies.
Is August a good time to visit San Juan?
August is not the best time to visit San Juan (3.4/10) mainly because of the rain. The weather is much better in January to March.
August weather at a glance
| Average high | 31°C (87°F) |
|---|---|
| Average low | 27°C (80°F) |
| Daily mean | 28°C (83°F) |
| Rainfall | 132 mm (5.2 in) |
| Rainy days (1 mm+) | 26 |
| Humidity | 79% |
| Cloud cover | 65% |
| Daylight | 12.6 hours |
| Est. sunshine | 4.9 hours/day |
| Wind | 14.5 km/h |
| vs July | About as warm as July, with 30 mm more rain. |
What to pack for San Juan in August
- light, breathable clothing
- sunscreen and a hat
- an umbrella or rain jacket
San Juan weather in other months
Jan28°C / 24°C43 mmExcellentFeb28°C / 23°C40 mmExcellentMar29°C / 24°C52 mmExcellentApr29°C / 24°C71 mmGoodMay30°C / 25°C124 mmPoorJun30°C / 26°C91 mmPoorJul30°C / 27°C102 mmPoorAug31°C / 27°C132 mmPoorSep30°C / 27°C157 mmPoorOct30°C / 26°C169 mmPoorNov29°C / 26°C142 mmPoorDec28°C / 24°C55 mmGood
← JulyBest time to visit San JuanSeptember →
Better weather in August nearby
- San Francisco, California23°C · 1 mm · Excellent
- Seattle, Washington24°C · 25 mm · Excellent
- Vancouver22°C · 32 mm · Excellent
- Victoria21°C · 26 mm · Excellent
- Calgary24°C · 62 mm · Excellent
- Honolulu, Hawaii28°C · 42 mm · Excellent
Nearby in August
- Charlotte Amalie29°C · 109 mm
- Road Town29°C · 76 mm
- Punta Cana29°C · 84 mm
- Marigot29°C · 68 mm
- The Valley29°C · 68 mm
- Philipsburg29°C · 68 mm
Where else is good in August? See where to go in August.