Bayamon Weather in August
August in Bayamon brings very high temperatures, with daytime highs of 31°C (88°F) and nights around 25°C (77°F). Quite a bit of rainfall is expected, around 107 mm (4.2 in), so pack an umbrella.
Rainfall in Bayamon in August
Past climate data indicates that roughly 20 days will see rain, totalling around 107 mm (4.2 in) for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Bayamon in August
In August, expect very high temperatures in Bayamon, with highs of 31°C (88°F) and lows of 25°C (77°F) at night. For most visitors, the main thing to prepare for is the heat during the day. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably. These are average temperatures, but occasional heat spikes are possible. Stay comfortable by wearing light clothing and drinking water.
Sunshine in Bayamon in August
The city usually sees around 267 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Wind Speed in Bayamon in August
August has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.
Average water temperature in August
The water is 29°C (84°F) — very warm by most standards. Comfortable to swim in, but not particularly refreshing if you're looking to cool off.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 Bayamon.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Puerto Rico, check out our Bayamon's climate page.
Bayamon Temperature in August
Min Temperature
25°C (77°F)
Max Temperature
31°C (88°F)
Water Temperature
29°C (84°F) *
Chance of Rain
66%
Precipitation
107 mm (4.2 in)
Rainy days
20 days
Humidity
76% *
Windspeed
3 m/s (6 knots) *
Sunshine
267 hours *
Percentage Sunshine
68% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Bayamon typically stay consistent throughout August, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Bayamon in August
Browse day-by-day weather records for Bayamon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bayamon historical weather extremes in August
According to our 49 years of weather records for Bayamon, the following extremes were recorded between 1976 and 2025.
- The warmest day in August was on August 21, 1980, with a maximum of 36°C (97°F).
- The coldest August day was on August 24, 1988, with a maximum of 26°C (79°F).
- Bayamon registered its coldest August night on August 27, 1976, with temperatures dropping to 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
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What to Wear in Bayamon in August
Warm temperatures in August make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 29°C (84°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Bayamon in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Puerto Rico, check out our Bayamon's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Bayamon climate overview or explore weather in Puerto Rico.
