Muelle San Carlos Weather in September

In Muelle San Carlos, September brings high daytime temperatures around 29°C (84°F), with nights cooling to 21°C (70°F). This month falls within the rainy season, so expect frequent rainfall.

Rainfall in Muelle San Carlos in September

As part of the rainy season, Muelle San Carlos sees around 23 days of rain in September, with an average of 308 mm (12 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.

Temperature in Muelle San Carlos in September

September in Muelle San Carlos brings typical temperatures with highs around 29°C (84°F) and lows of 21°C (70°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights are mild at around 21°C (70°F), which is comfortable for most people.

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Muelle San Carlos. Our weather planner can help you explore destinations with more pleasant weather conditions.

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

Muelle San Carlos Temperature in September

Min Temperature 21°C (70°F)  

Max Temperature 29°C (84°F)  

Chance of Rain 76%  

Precipitation 308 mm (12 in)  

Rainy days 23 days  

Humidity 88% *  

* Data from: Los Chiles, Costa Rica (68 KM, 42 Miles).

What to Wear in Muelle San Carlos in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can.

What To Do in Muelle San Carlos in September

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

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

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 Muelle San Carlos's climate page.

More climate data for Muelle San Carlos

Temperature Rainfall Humidity

See the full Muelle San Carlos climate overview or explore weather in Costa Rica.