September Temperature Averages in Costa Rica

Average September temperatures for cities and other locations throughout Costa Rica are listed below in degrees Celsius and Fahrenheit.

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 tables give the month's maximum and minimum average daily temperatures based on weather data collected over many years.

North – Central Costa Rica

Average September temperatures
High °F	Low °F	Place	High °C	Low °C
82	65	Alajuela	28	18
77	60	Barva	25	15
77	59	Heredia	25	15
90	73	Los Chiles	32	23
79	66	Quesada	26	19
90	73	Upala	32	23

Temperature averages for September
High °F	Low °F	Place	High °C	Low °C
87	69	Buenos Aires	30	21
89	73	Cañas	32	23
88	72	Liberia	31	22
90	74	Nicoya	32	23
84	74	Puntarenas	29	23
87	73	Quepos	30	23
88	72	Río Claro	31	22

September temperature averages
High °F	Low °F	Place	High °C	Low °C
77	60	Cartago	25	16
85	69	Guapiles	29	21
87	73	Limón	31	23
82	65	San Isidro	28	18
79	64	San José	26	18
82	66	Turrialba	28	19