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Arecibo Weather in August
August in Arecibo brings very high temperatures, with highs of 31°C (88°F) and nights dropping to 25°C (77°F). Rainfall is on the higher side this month, averaging around 112 mm (4.4 in), so keep a rain jacket handy.
Rainfall in Arecibo in August
Expect around 19 days of rain based on historical data, with 112 mm (4.4 in) average. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Arecibo in August
Arecibo in August gets highs of 31°C (88°F) during the day and drops to 25°C (77°F) at night. For most visitors, the main thing to prepare for is the heat during the day. Nights are warm at 25°C (77°F). It's worth making sure your accommodation has decent ventilation or air conditioning. Expect some days to be hotter than these averages. Stay cool by wearing light clothing and drinking plenty of water throughout the day.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March and December typically offer the best weather for Arecibo.
Arecibo Temperature in August
Min Temperature
25°C (77°F)
Max Temperature
31°C (88°F)
Chance of Rain
63%
Precipitation
112 mm (4.4 in)
Rainy days
19 days
Arecibo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Arecibo - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Arecibo typically stay consistent throughout August, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in August
Historical weather records for Arecibo in August
Browse day-by-day weather records for Arecibo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Arecibo historical weather extremes in August
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Arecibo.
- The hottest August day on record in Arecibo reached 36°C (97°F) (August 21, 1980).
- The coldest August day was on August 31, 1979, with a maximum of 26°C (79°F).
- The coldest night in August in Arecibo was on August 2, 1994, with a minimum of 22°C (72°F).
Best Places in Puerto Rico in August
Find out more about the weather in Puerto Rico and which places have the best travel conditions in this month. See all of Puerto Rico in August →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Arecibo in August
Warm but pleasant conditions in Arecibo in August. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags.
What To Do in Arecibo in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Arecibo 3-Day Forecast
More climate data for Arecibo
See the full Arecibo climate overview or explore weather in Puerto Rico.
Popular in August
Where to go in August - average daytime high across popular destinations.
San Juan
31°C (88°F) Rio Grande
31°C (88°F) Aguada
30°C (86°F) Rincon30°C (86°F) Luquillo30°C (86°F) Culebra30°C (86°F) Vieques30°C (86°F) Fajardo
30°C (86°F) Bucket list
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