Santiago Weather in August
Thinking of visiting Santiago in August? Expect very high temperatures reaching 33°C (91°F) during the day, dropping to 22°C (72°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Santiago in August
You can expect rain on around 15 days based on historical patterns, with 64 mm (2.5 in) average for the month. Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.
Temperature in Santiago in August
In August, Santiago gets very high temperatures, with highs of 33°C (91°F). Nights cool to around 22°C (72°F). Mornings and evenings are often more comfortable than the peak afternoon hours. At 22°C (72°F) overnight, nights are warm enough to sit outside comfortably in light clothing. Remember, these are typical temperatures, and there can be hotter days. Dress appropriately and stay hydrated to remain comfortable.
Sunshine in Santiago in August
With approximately 262 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.
Wind Speed in Santiago in August
Wind speeds average 3 m/s (6 knots) during August. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.August in Santiago has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
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 Santiago's climate page.
Santiago Temperature in August
Min Temperature
22°C (72°F)
Max Temperature
33°C (91°F)
Chance of Rain
51%
Precipitation
64 mm (2.5 in)
Rainy days
15 days
Humidity
73%
Windspeed
3 m/s (6 knots)
Sunshine
262 hours
Percentage Sunshine
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in Santiago typically stay consistent throughout August, with daily highs averaging around 33°C (91°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 Santiago in August
Browse day-by-day weather records for Santiago spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Santiago historical weather extremes in August
Based on weather observations in Santiago between 1994 and 2025, these are the recorded extremes during August.
- On August 10, 2019, temperatures climbed to 37°C (99°F), marking the warmest August day on record.
- On August 25, 2012, Santiago saw its coldest August day with temperatures maxing out at 24°C (75°F).
- Santiago 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 →
perfect weather
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tolerable
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What to Wear in Santiago in August
Get ready for hot weather in August! Lightweight, breathable fabrics are your best friend during this month. Cotton and linen shirts, shorts, sundresses, and sandals will keep you comfortable. Light colors help reflect the heat, avoid wearing black. Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Santiago 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 Santiago's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Santiago climate overview or explore weather in the Dominican Republic.
