September Rainfall Averages for Costa Rica





The tables below give September averages for rainfall at cities and other locations in Costa Rica. Each place has a total for how many days of wet weather it usually gets this month and for the normal amount of precipitation.

You can jump to a separate table for each region of the country: North – Central Costa Rica covering the provinces of Alajuela and Heredia, Western Costa Rica comprising Puntarenas and Guanacaste provinces, and Central & Eastern Costa Rica taking in San José, Cartago and Limón provinces.

The precipitation amounts are averages of weather data collected over many years.

North – Central Costa Rica

September rainfall averages
Days Place Inches Milli­metres
25 Alajuela 12.5 317
25 Barva 16.6 422
Heredia 15.6 397
24 Los Chiles 7.6 194
23 Quesada 13.1 333
24 Upala 10.9 277

Western Costa Rica

Average September precipitation
Days Place Inches Milli­metres
25 Buenos Aires 20.0 508
Cañas 12.1 308
Filadelfia 13.8 351
20 Liberia 14.2 362
25 Nicoya 13.8 351
20 Puntarenas 9.1 231
26 Quepos 21.3 542
25 Río Claro 24.6 625

Central & Eastern Costa Rica

Average amount of rain in September
Days Place Inches Milli­metres
24 Cartago 8.3 210
23 Guapiles 14.8 376
14 Limón 5.6 142
San Isidro 16.5 420
23 San José 12.4 315
Sixaola 5.4 137
Turrialba 9.9 252
Reference

Instituto Meteorológico Nacional De Costa Rica. Climatic Data..

World Meteorological Organization. World Weather Information Service. Costa Rica.

Costa Rica Precipitation
Back to Top