Playa Hermosa Weather in September
Playa Hermosa in September averages 30°C (86°F) during the day and 24°C (75°F) at night. September is part of the rainy season, so frequent rainfall is typical.
Rainfall in Playa Hermosa in September
As part of the rainy season, Playa Hermosa sees around 23 days of rain in September, with an average of 293 mm (12 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Playa Hermosa in September
If you're visiting Playa Hermosa in September, expect highs of 30°C (86°F) and overnight lows around 24°C (75°F). It's usually most comfortable outside during the morning and later in the day. At 24°C (75°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Sunshine in Playa Hermosa in September
The area experiences a moderate amount of sunshine, with approximately 158 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 Playa Hermosa 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 Playa Hermosa's climate page.
Playa Hermosa Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
30°C (86°F)
Chance of Rain
77%
Precipitation
293 mm (12 in)
Rainy days
23 days
Humidity
86% *
Sunshine
158 hours *
Percentage Sunshine
*
Daily Historical Temperatures
41-year average (1977-2025)
Based on our historical records, temperatures in Playa Hermosa typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Daily Historical Precipitation
41-year average (1977-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Playa Hermosa in September
Browse day-by-day weather records for Playa Hermosa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Playa Hermosa historical weather extremes in September
Our historical data for Playa Hermosa spans 1999 to 2025, revealing these weather extremes.
- The warmest day in September was on September 7, 2009, with a maximum of 35°C (95°F).
- Playa Hermosa experienced its chilliest September day on September 22, 2005, reaching only 25°C (77°F).
- Nighttime temperatures dropped to 20°C (68°F) on September 25, 2006, marking the coldest September night on record.
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 →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Playa Hermosa in September
Warm but pleasant conditions in Playa Hermosa 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 Playa Hermosa 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 Playa Hermosa's climate page.
Temperature Rainfall Sunshine Humidity
See the full Playa Hermosa climate overview or explore weather in Costa Rica.
