Río Segundo Weather in September

Río Segundo in September averages 26°C (79°F) during the day and 18°C (64°F) at night. September is part of the rainy season, so frequent rainfall is typical.

Rainfall in Río Segundo in September

As part of the rainy season, Río Segundo sees around 24 days of rain in September, with an average of 329 mm (13 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.

Temperature in Río Segundo in September

In September, expect high temperatures in Río Segundo, with highs of 26°C (79°F) and lows of 18°C (64°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 18°C (64°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Río Segundo in September

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

September in Río Segundo has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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 Río Segundo's climate page.

Río Segundo Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 80%  

Precipitation 329 mm (13 in)  

Rainy days 24 days  

Humidity 85% *  

Sunshine 149 hours *  

Percentage Sunshine *  

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

What to Wear in Río Segundo 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 Río Segundo 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 Río Segundo's climate page.

More climate data for Río Segundo

Temperature Rainfall Sunshine Humidity

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