Dominical Weather in September
Dominical in September sees high daytime temperatures of 26°C (79°F) and nighttime lows of 23°C (73°F). As part of the rainy season, showers are frequent and often heavy. Budget around 879 mm (35 in) of rainfall for the month.
Rainfall in Dominical in September
As part of the rainy season, Dominical sees around 22 days of rain in September, with an average of 879 mm (35 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.
Temperature in Dominical in September
Temperatures in Dominical in September top out at 26°C (79°F) and drop to 23°C (73°F) overnight. This kind of day-to-night contrast is typical for this time of year. With overnight lows of 23°C (73°F), evenings stay pleasantly warm.
Sunshine in Dominical in September
The area experiences a moderate amount of sunshine, with approximately 153 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.September in Dominical has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations 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 Costa Rica, check out our Dominical's climate page.
Dominical Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
26°C (79°F)
Chance of Rain
73%
Precipitation
879 mm (35 in)
Rainy days
22 days
Humidity
83% *
Sunshine
153 hours *
Percentage Sunshine
*
Historical weather for Dominical in September
Browse day-by-day weather records for Dominical spanning 47 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Dominical historical weather extremes in September
Our historical data for Dominical spans 2006 to 2025, revealing these weather extremes.
- The warmest day in September was on September 14, 2025, with a maximum of 27°C (81°F).
- The lowest daytime temperature in September was 22°C (72°F), recorded on September 25, 2010.
- The coldest night in September in Dominical was on September 25, 2007, with a minimum of 19°C (66°F).
- The heaviest September precipitation occurred on September 14, 2007, when 154 mm (6.1 in) of precipitation fell.
Best Places in Costa Rica in September
Find out more about the weather in Costa Rica and which places have the best travel conditions in this month. See all of Costa Rica in September →
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What to Wear in Dominical in September
Warm but pleasant conditions in Dominical 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. It's going to pour! Pack a good poncho and prepare for very wet conditions. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Dominical in September
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 Costa Rica, check out our Dominical's climate page.
Temperature Rainfall Sunshine Humidity
See the full Dominical climate overview or explore weather in Costa Rica.
