Puntarenas Weather in September
Puntarenas in September averages 29°C (84°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 Puntarenas in September
As part of the rainy season, Puntarenas sees around 23 days of rain in September, with an average of 403 mm (16 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.
Temperature in Puntarenas in September
Daytime highs in Puntarenas in September reach 29°C (84°F), with nights around 24°C (75°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights are warm at 24°C (75°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Puntarenas in September
The month experiences a moderate amount of sunlight, with 159 hours of sunshine. This provides a nice balance between sunshine and rain.
Wind Speed in Puntarenas in September
Average wind conditions reach 1 m/s (2 knots) in September. This creates generally peaceful weather with subtle air movement. Remember this is an average: some days are windless while others have noticeable or very gentle breezes.September in Puntarenas 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 Puntarenas's climate page.
Puntarenas Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
29°C (84°F)
Chance of Rain
75%
Precipitation
403 mm (16 in)
Rainy days
23 days
Windspeed
1 m/s (2 knots)
Sunshine
159 hours
Percentage Sunshine
Daily Historical Temperatures
44-year average (1976-2025)
Based on our historical records, temperatures in Puntarenas typically stay consistent throughout September, with daily highs averaging around 29°C (84°F). Nights are pleasant, with lows around 19°C (66°F).
Average temperatures in September
Daily Historical Precipitation
44-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Puntarenas in September
Browse day-by-day weather records for Puntarenas spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Puntarenas historical weather extremes in September
The extremes listed below come from historical weather data collected in Puntarenas from 1996 through 2025.
- The warmest day in September was on September 5, 1997, with a maximum of 34°C (93°F).
- The lowest daytime temperature in September was 21°C (70°F), recorded on September 29, 2010.
- Nighttime temperatures dropped to 13°C (55°F) on September 29, 2010, marking the coldest September night on record.
- The wettest September day on record brought 243 mm (9.6 in) of precipitation to Puntarenas (September 27, 2025).
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 Puntarenas 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! Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Puntarenas 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 Puntarenas's climate page.
Temperature Rainfall Sunshine Wind Speed
See the full Puntarenas climate overview or explore weather in Costa Rica.
