5 Tranquil Spots in the Dominican Republic
Explore the hidden gems of the Dominican Republic, from Bahía de Las Águilas to Constanza. Discover tranquil beaches, mountains, and green landscapes.
Cosón Weather in September
Cosón in September averages 32°C (90°F) during the day and 25°C (77°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Cosón in September
Historically, approximately 16 days this month are expected to have rain, averaging 129 mm (5.1 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Cosón in September
September in Cosón brings very high temperatures, with highs of 32°C (90°F) and nights around 25°C (77°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. At 25°C (77°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference. Although these are the average temperatures, expect warmer days occasionally. Wear cool clothing and stay hydrated to manage the heat.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 Cosón.
Cosón Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
32°C (90°F)
Chance of Rain
52%
Precipitation
129 mm (5.1 in)
Rainy days
16 days
Humidity
85% *
* Data from: Sabana Dela Mar, the Dominican Republic (34 KM, 21 Miles).
Cosón Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cosón - and find the best time to visit.
Daily Historical Temperatures
34-year average (1984-2025)
Based on our historical records, temperatures in Cosón typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Historical weather records for Cosón in September
Browse day-by-day weather records for Cosón spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cosón historical weather extremes in September
Based on 26 years of weather observations (1999-2025), these are the most extreme conditions recorded in Cosón.
- The warmest day in September was on September 11, 2006, with a maximum of 36°C (97°F).
- Cosón experienced its chilliest September day on September 17, 2004, reaching only 24°C (75°F).
- The coldest night in September in Cosón was on September 1, 2014, with a minimum of 21°C (70°F).
Best Places in the Dominican Republic in September
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 September →
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 Cosón in September
Warm but pleasant conditions in Cosón in September. 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 Cosón in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
Cosón 3-Day Forecast
More climate data for Cosón
See the full Cosón climate overview or explore weather in the Dominican Republic.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bayahibe
32°C (90°F) Las Terrenas32°C (90°F) Santo Domingo
31°C (88°F) Boca Chica30°C (86°F) Juan Dolio30°C (86°F) Sosúa
30°C (86°F) Punta Cana30°C (86°F) Cabarete30°C (86°F) Bucket list
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