Grecia Weather in September

September in Grecia typically sees daytime highs of 26°C (79°F) and nighttime lows of 18°C (64°F). September falls within the rainy season, so heavy rainfall is to be expected.

Rainfall in Grecia in September

As part of the rainy season, Grecia sees around 24 days of rain in September, with an average of 412 mm (16 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.

Temperature in Grecia in September

In September, expect high temperatures in Grecia, 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. Nights cool down to 18°C (64°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 Grecia in September

The month experiences a moderate amount of sunlight, with 149 hours of sunshine. This provides a nice balance between sunshine and rain.

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

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• January
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• March
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• May
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For a detailed overview over the year and the best time to visit Costa Rica, check out our Grecia's climate page.

Grecia Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 79%  

Precipitation 412 mm (16 in)  

Rainy days 24 days  

Humidity 85% *  

Sunshine 149 hours *  

Percentage Sunshine *  

* Data from: San José, Costa Rica (29 KM, 18 Miles).

What to Wear in Grecia in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Grecia 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 Grecia's climate page.

More climate data for Grecia

Temperature Rainfall Sunshine Humidity

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