When to go · San José
San José in September
Mixed month. Very wet; landslides on rural roads.
Key facts
- Verdict
- Mixed
- Temperature
- 26°C79°F / 18°C64°F
- average high / low
- Rain days
- 23
- Crowds
- Low
- Costa Rica overall
- Prices
- Low
- Costa Rica overall
Verdict
Very wet; landslides on rural roads.
Weather in September
- San JoséHighs around 26 °C, lows around 18 °C, rain on about 23 daysHighs around 79 °F, lows around 64 °F, rain on about 23 days
- Central Valley and mountains, Costa Rica · San José, Monteverde, Poás, Irazúrainy
Spring-like 18–26 °C; Monteverde is cool, windy and misty — pack a fleece.Spring-like 64–79 °F; Monteverde is cool, windy and misty — pack a fleece.
Peak wet season season
Lowest prices and quiet museums.
Watch: September and October are the wettest; landslides close some rural roads.
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Independence Day and lantern parade
14–15 September · Nationwide, downtown parades
Museums closed on the day; parades block downtown streets.
Crowds and prices
- Crowds · Costa Rica overall
- Low
- Prices · Costa Rica overall
- Low
Costa Rica overall: Wettest on the Pacific; driest on the Caribbean — switch sides.
What to pack
- A rain jacket or umbrella and shoes that dry fast