San Rafael Weather in September

During September, San Rafael experiences high daytime temperatures of 25°C (77°F) and cooler nights around 17°C (63°F). September sits within the rainy season, so expect regular and often heavy rainfall.

Rainfall in San Rafael in September

As part of the rainy season, San Rafael sees around 24 days of rain in September, with an average of 476 mm (19 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in San Rafael in September

In September, expect high temperatures in San Rafael, with highs of 25°C (77°F) and lows of 17°C (63°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in San Rafael in September

The area experiences a moderate amount of sunshine, with approximately 149 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.

September in San Rafael can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options 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 San Rafael's climate page.

San Rafael Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 79%  

Precipitation 476 mm (19 in)  

Rainy days 24 days  

Humidity 85% *  

Sunshine 149 hours *  

Percentage Sunshine *  

* Data from: San José, Costa Rica (15 KM, 9 Miles).

What to Wear in San Rafael 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! Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in San Rafael 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 Rafael's climate page.

More climate data for San Rafael

Temperature Rainfall Sunshine Humidity

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