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Get San Jose, Costa Rica typical December Weather including average and record temperatures from AccuWeather.com my recent locations Â°c San Jose, Costa Rica 27Â°
December Temperature Averages in Costa Rica Average December temperatures for cities and other locations throughout Costa Rica are listed below in degrees Celsius and Fahrenheit. The tables give the month's maximum and minimum average daily temperatures based on weather data collected over many years. You can jump to a separate table for each region of the country: North â 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 JosÃ©, Cartago and LimÃ³n provinces. Average December temperatures.