San José Weather in September

September is one of the perfect months to visit San José, with daytime temperatures of 22°C (72°F) and lows of 10°C (50°F) at night. Do note that quite a bit of rainfall is typical, averaging around 99 mm (3.9 in).

Rainfall in San José in September

The climate data from previous years indicates about 7 days of rain, averaging 99 mm (3.9 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in San José in September

September is a good time to be in San José. Days are perfect, reaching 22°C (72°F), with nights around 10°C (50°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 10°C (50°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.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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 Argentina, check out our San José's climate page.

San José Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 22°C (72°F)  

Chance of Rain 24%  

Precipitation 99 mm (3.9 in)  

Rainy days 7 days  

What to Wear in San José in September

For San José in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.

What To Do in San José in September

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

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

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 Argentina, check out our San José's climate page.

More climate data for San José

Temperature Rainfall

See the full San José climate overview or explore weather in Argentina.