Playa Grande Weather in September
September in Playa Grande brings very 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 Grande in September
Playa Grande is in the rainy season in September, with rain on around 23 days and an average of 324 mm (13 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 Grande in September
Playa Grande in September gets highs of 30°C (86°F) during the day and drops to 25°C (77°F) at night. Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. 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 Grande in September
With about 158 hours of sunshine, the area enjoys a nice balance of sun and rainy moments, creating a pleasant environment.September in Playa Grande 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 Costa Rica, check out our Playa Grande's climate page.
Playa Grande Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Chance of Rain
77%
Precipitation
324 mm (13 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 Grande 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 Grande in September
Browse day-by-day weather records for Playa Grande spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Playa Grande historical weather extremes in September
Based on 26 years of weather observations (1999-2025), these are the most extreme conditions recorded in Playa Grande.
- On September 23, 2023, temperatures climbed to 35°C (95°F), marking the warmest September day on record.
- Playa Grande experienced its chilliest September day on September 26, 2010, reaching only 25°C (77°F).
- The coldest night in September in Playa Grande was on September 25, 2006, with a minimum of 20°C (68°F).
- Peak precipitation in September occurred on September 7, 2021, when 208 mm (8.2 in) of precipitation was measured.
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 Playa Grande in September
Warm but pleasant conditions in Playa Grande 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. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Playa Grande 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 Grande's climate page.
Temperature Rainfall Sunshine Humidity
See the full Playa Grande climate overview or explore weather in Costa Rica.
