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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.
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).
Muelle San Carlos Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Muelle San Carlos - and find the best time to visit.
Best Places in Costa Rica in September
Find out more about the weather in Costa Rica and which places have the best travel conditions in this month. See all of Costa Rica in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
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.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Muelle San Carlos 3-Day Forecast
More climate data for Muelle San Carlos
See the full Muelle San Carlos climate overview or explore weather in Costa Rica.
Popular in September
Where to go in September - average daytime high across popular destinations.
Tamarindo
30°C (86°F) Cahuita29°C (84°F) Santa Teresa29°C (84°F) Herradura28°C (82°F) Puerto Viejo de Talamanca29°C (84°F) Fortuna29°C (84°F) Jacó28°C (82°F) San José24°C (75°F) Bucket list
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