
Costa Rica in September
September in Costa Rica brings highs around 88°F (31°C), lows near 72°F and about 17 rainy days. The sun sets around 5:37 pm. The sea is about 84°F (29°C). It's off season for sightseeing: hot and quieter.
Photo: Rhododendrites, CC BY-SA 4.0
What September is good for in Costa Rica
Each activity rated for September's weather and sea.
Scuba divingGood in September
SnorkelingGood in September
Cooking classesAny month
Boat toursFair in September
Catamaran toursFair in September
Sunset cruisesFair in September
Zipline toursOff season in September
ATV toursOff season in September
Bike toursOff season in September
Private toursOff season in September
Helicopter toursOff season in September
September next to August and October
| Month | August | September | October |
|---|---|---|---|
| High | 90°F (32°C) | 88°F (31°C) | 88°F (31°C) |
| Low | 73°F (23°C) | 72°F (22°C) | 72°F (22°C) |
| Rainy days | 12 | 17 | 16 |
| Sea | 84°F | 84°F | 83°F |
| Sunset | 5:54 pm | 5:37 pm | 5:20 pm |
| Daylight | 12 h 27 min | 12 h 11 min | 11 h 55 min |
Averages for Liberia, Costa Rica; sunrise and sunset on the 15th. Costa Rica water temperature by month.
Tours in Costa Rica
Small Group Cultural Walking Tour in San Jose Costa RicaFrom $45View
Sloth Watching Wildlife Tour in La Fortuna, Costa RicaFrom $62View
Nicaragua Full Day Tour from Costa RicaFrom $230View
Manuel Antonio National Park : Guided tour with TICKET INCLUDEDFrom $27View
Safari Tour in Ponderosa Costa RicaFrom $40View
2 Hour ATV Private Tour in Costa RicaFrom $85View
Tours from Viator. Good Outing may earn a commission when you book, at no cost to you.
Questions
Is September a good time to visit Costa Rica?
It's off season for sightseeing: hot and quieter. The most comfortable months overall are November and December.
How hot is Costa Rica in September?
Average highs are about 88°F (31°C) and lows about 72°F (22°C).
Does it rain much in Costa Rica in September?
September averages 17 rainy days, against 17 in the wettest month.
How warm is the sea in Costa Rica in September?
About 84°F (29°C). Warm enough for long swims and snorkeling.







