San Ramón Weather in September

September in San Ramón sees daytime temperatures around 27°C (81°F) and lows of 19°C (66°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.

Rainfall in San Ramón in September

San Ramón is in the rainy season in September, with rain on around 24 days and an average of 415 mm (16 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.

Temperature in San Ramón in September

In September, expect high temperatures in San Ramón, with highs of 27°C (81°F) and lows of 19°C (66°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights cool down to 19°C (66°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in San Ramón in September

The month experiences a moderate amount of sunlight, with 147 hours of sunshine. This provides a nice balance between sunshine and rain.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March and April typically offer the best weather for San Ramón.

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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 San Ramón's climate page.

San Ramón Temperature in September

Min Temperature 19°C (66°F)  

Max Temperature 27°C (81°F)  

Chance of Rain 79%  

Precipitation 415 mm (16 in)  

Rainy days 24 days  

Humidity 86% *  

Sunshine 147 hours *  

Percentage Sunshine *  

* Data from: Santamaria, Costa Rica (41 KM, 25 Miles).

What to Wear in San Ramón 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. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in San Ramón in September

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

Swimming

7/10

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 San Ramón's climate page.

More climate data for San Ramón

Temperature Rainfall Sunshine Humidity

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