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Paraíso Weather in September
September in Paraíso brings very high temperatures, with daytime highs of 30°C (86°F) and nights around 25°C (77°F). It's part of the rainy season, with 359 mm (14 in) of rainfall on average, so an umbrella or poncho is a good idea.
Rainfall in Paraíso in September
As part of the rainy season, Paraíso sees around 23 days of rain in September, with an average of 359 mm (14 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 Paraíso in September
September in Paraíso brings very high temperatures, with highs of 30°C (86°F) and nights around 25°C (77°F). For most visitors, the main thing to prepare for is the heat during the day. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Paraíso in September
The month brings about 158 hours of sunlight, offering a comfortable mix of sun and rainy moments.September in Paraíso 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.
Paraíso Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Chance of Rain
77%
Precipitation
359 mm (14 in)
Rainy days
23 days
Humidity
86% *
Sunshine
158 hours *
Percentage Sunshine
*
* Data from: Liberia, Costa Rica (64 KM, 39 Miles).
Paraíso Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Paraíso - and find the best time to visit.
Daily Historical Temperatures
41-year average (1977-2025)
Based on our historical records, temperatures in Paraíso 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 records for Paraíso in September
Browse day-by-day weather records for Paraíso spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Paraíso historical weather extremes in September
According to our 27 years of weather records for Paraíso, the following extremes were recorded between 1999 and 2026.
- The hottest September day on record in Paraíso reached 37°C (99°F) (September 9, 2026).
- The lowest daytime temperature in September was 25°C (77°F), recorded on September 26, 2010.
- The coldest night in September in Paraíso 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 →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Paraíso 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 Paraíso in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Paraíso 3-Day Forecast
More climate data for Paraíso
Temperature Rainfall Sunshine Humidity
See the full Paraíso climate overview or explore weather in Costa Rica.
Popular in September
Where to go in September - average daytime high across popular destinations.
Tamarindo
30°C (86°F) Cahuita29°C (84°F) Santa Teresa29°C (84°F) Herradura28°C (82°F) Puerto Viejo de Talamanca29°C (84°F) Fortuna29°C (84°F) Jacó28°C (82°F) San José24°C (75°F) Bucket list
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