Cartago Weather in September

Thinking of visiting Cartago in September? Expect high temperatures reaching 23°C (73°F) during the day, dropping to 15°C (59°F) at night. Heavy showers are common during the rainy season.

Rainfall in Cartago in September

As part of the rainy season, Cartago sees around 24 days of rain in September, with an average of 441 mm (17 in). The rain this month falls heavily when it arrives, so waterproofs are worth keeping handy.

Temperature in Cartago in September

Daytime temperatures in Cartago reach 23°C (73°F) in September, dropping to 15°C (59°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 15°C (59°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Cartago in September

The area enjoys a balanced 149 hours of sunlight, ensuring it's neither too rainy nor too sunny.

September in Cartago can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Costa Rica, check out our Cartago's climate page.

Cartago Temperature in September

Min Temperature 15°C (59°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 81%  

Precipitation 441 mm (17 in)  

Rainy days 24 days  

Humidity 85% *  

Sunshine 149 hours *  

Percentage Sunshine *  

* Data from: San José, Costa Rica (18 KM, 11 Miles).

What to Wear in Cartago in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Cartago in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Camping

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Costa Rica, check out our Cartago's climate page.

More climate data for Cartago

Temperature Rainfall Sunshine Humidity

See the full Cartago climate overview or explore weather in Costa Rica.