Costa Rica · September
Low seasonCosta Rica · North America
Max Temp
26.9°C
Min Temp
18.9°C
Sunshine
3.8 h/day
Rain Days
17 days
Water Temp
29.1°C
Rainfall
260.2 mm
Humidity
84%
Avg Temp
22°C
Off-season — lowest travel prices with still acceptable climate.
September in Costa Rica offers acceptable conditions — but it's not among the top travel months. Those looking for ideal weather should visit in January, February, March, April, and December.
Daytime temperatures reach up to 27°C, cooling to 19°C at night (daily average: 22°C). With 4 sunshine hours per day and 17 rain days (260 mm), this is one of the cloudier months. The water is a warm 29°C — perfect for snorkelling and swimming.
An umbrella or waterproof jacket is essential. On rainy days, plan indoor activities like museums and markets.
Grüne Jahreszeit: Täglich Regen, die Hügel werden üppig grün, Wasservögel überall. Surfer kommen für die Pazifik-Wellen. Preise günstiger, Nationalparks mit frischem Grün.
Packing list for Costa Rica in September
- T-Shirts und kurze Hosen
- Badezeug und Strandtuch
- Regenjacke und wasserfeste Schuhe
- Insektenschutzmittel
- Reiseapotheke
Frequently Asked Questions
- Is September a good time to visit Costa Rica?
- September is not an optimal month for Costa Rica (Score: 44/100), but it is manageable. For better conditions, consider January, February, March, April, and December.
- How warm is it in Costa Rica in September?
- In September, Costa Rica sees daily highs of 27°C. Nights cool to 19°C, with a daily average of 22°C.
- How much rain falls in Costa Rica in September?
- In September, Costa Rica receives an average of 260 mm of rain over 17 rain days. With frequent rain days, waterproof clothing is recommended.
- How many sunshine hours does Costa Rica get in September?
- Costa Rica averages 4 sunshine hours per day in September — below the annual average.
- How warm is the water in Costa Rica in September?
- Water temperature in Costa Rica in September averages 29°C — ideal for swimming and snorkelling.
