Playa Flamingo Weather in September
September in Playa Flamingo brings high temperatures, with highs of 30°C (86°F) and nights dropping to 25°C (77°F). The rainy season is in full swing this month, so frequent downpours are part of the picture.
Rainfall in Playa Flamingo in September
Playa Flamingo is in the rainy season in September, with rain on around 23 days and an average of 296 mm (12 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Playa Flamingo in September
September in Playa Flamingo sees highs of 30°C (86°F) and lows of 25°C (77°F) overnight. This kind of day-to-night contrast is typical for this time of year. At 25°C (77°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Sunshine in Playa Flamingo in September
The area enjoys a moderate level of sunlight, with around 158 hours. It's a good balance between sunny and rainy days.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Playa Flamingo. 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 Costa Rica, check out our Playa Flamingo's climate page.
Playa Flamingo Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Chance of Rain
78%
Precipitation
296 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 Flamingo 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 Flamingo in September
Browse day-by-day weather records for Playa Flamingo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Playa Flamingo historical weather extremes in September
The extremes listed below come from historical weather data collected in Playa Flamingo from 1999 through 2025.
- Playa Flamingo recorded its highest September temperature of 35°C (95°F) on September 7, 2009.
- The coldest September day was on September 22, 2005, with a maximum of 25°C (77°F).
- The lowest overnight temperature recorded in September was 20°C (68°F) (September 25, 2006).
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
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What to Wear in Playa Flamingo in September
Warm temperatures in September 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. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Playa Flamingo 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 Flamingo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Playa Flamingo climate overview or explore weather in Costa Rica.
