Climate
Weather in Costa Rica in September
Weather in Costa Rica, September
In September, Costa Rica sees average highs of 24.9°C (77°F) and lows of 16.4°C (62°F), with around 464 mm of rain.
Costa Rica — September
Costa Rica → September
- Daytime high
- 24.9°C (77°F)
- Overnight low
- 16.4°C (62°F)
- Rainfall
- 464 mm
- Best-time rank
- Off-peak
How September compares
| This month | 24.9°C (77°F) / 16.4°C (62°F) · 464 mm |
|---|---|
| Yearly average | 25.3°C (78°F) / 16.4°C (62°F) · 271 mm |
September in Costa Rica runs about average for the year, and is wetter than the yearly average. Pack layers you can adjust through the day — mild conditions, and something waterproof — this is a wetter month.
Common questions
What is the weather like in Costa Rica in September?
Average highs of 24.9°C (77°F) and lows of 16.4°C (62°F), with around 464 mm of rain.
Is September a good time to visit Costa Rica?
It is an off-peak month for comfort in Costa Rica; January, February, March tend to be more pleasant.
Updated climate normals, 2025