Daytime highs, nighttime lows and the warmest cities across Costa Rica this September.
Costa Rica, experiences maximum daytime temperatures in September ranging from 23°C (73°F) in Orosí to 31°C (88°F) in Santa Cruz. Nighttime temperatures generally drop to 23°C (73°F) in Santa Cruz and 15°C (59°F) in Orosí.
To get a sense of September's typical temperatures in the key spots of Costa Rica, explore the map below. Click on a point for an in-depth look.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Costa Rica.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Drill down to September weather for any region in Costa Rica.
Pick a city to see its September weather averages.
Expect daytime temperatures around 28°C (82°F) in Jacó. That makes September a high month for Costa Rica.
Jacó sees nighttime lows close to 24°C (75°F) in September.
According to our recent database analysis, Santa Cruz is the warmest city. It experiences an average maximum daytime temperature of approximately 31°C (88°F) and rarely drops below 23°C (73°F) during the night.
For the month of September, Orosí is the most temperate city in Costa Rica based on our records. Highs average 23°C (73°F) and nighttime temperatures dip to around 15°C (59°F).
Most cities enjoy a balanced amount of sunshine, with around 159 hours of sunlight anticipated in Jacó. This ensures the days are neither too dim nor excessively sunny.
The water temperature averages approximately 29°C (84°F) in Limon this month, which is a bit warm for swimming. For many people, water temperatures around 29°C (84°F) might feel quite warm, especially compared to typical swimming pool temperatures of 25°C (77°F) to 28°C (82°F).
We have much more information about the climate in Costa Rica.
Weather and climate has detailed information for every country in the world. Are you going to Costa Rica? Get detailed historical weather averages for many cities in Costa Rica.
Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
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