Río San Juan Weather in August
With daytime temperatures of 30°C (86°F) and nighttime lows of 25°C (77°F), August in Río San Juan brings very high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 109 mm (4.3 in) falls on average.
Rainfall in Río San Juan in August
Historically, the month has about 16 days of rain, averaging 109 mm (4.3 in) in total. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Río San Juan in August
August in Río San Juan brings typical temperatures with highs around 30°C (86°F) and lows of 25°C (77°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights stay warm at around 25°C (77°F), so light bedding and good ventilation are worth thinking about.If you're looking for dry conditions and comfortable temperatures, August may not be the ideal month to visit Río San Juan. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the Dominican Republic, check out our Río San Juan's climate page.
Río San Juan Temperature in August
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Chance of Rain
52%
Precipitation
109 mm (4.3 in)
Rainy days
16 days
Humidity
77% *
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in Río San Juan typically stay consistent throughout August, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in August
Daily Historical Precipitation
47-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 Río San Juan in August
Browse day-by-day weather records for Río San Juan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Río San Juan historical weather extremes in August
According to our 31 years of weather records for Río San Juan, the following extremes were recorded between 1994 and 2025.
- The hottest August day on record in Río San Juan reached 37°C (99°F) (August 9, 1995).
- The coldest August day was on August 24, 1995, with a maximum of 25°C (77°F).
- Río San Juan registered its coldest August night on August 17, 2022, with temperatures dropping to 20°C (68°F).
Best Places in the Dominican Republic in August
Find out more about the weather in the Dominican Republic and which places have the best travel conditions in this month. See all of the Dominican Republic in August →
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What to Wear in Río San Juan 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.What To Do in Río San Juan 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 the Dominican Republic, check out our Río San Juan's climate page.
See the full Río San Juan climate overview or explore weather in the Dominican Republic.
