San José Weather in January

January in San José brings high temperatures, with daytime highs of 25°C (77°F) and nights around 12°C (54°F). Quite a bit of rainfall is expected, around 139 mm (5.5 in), so pack an umbrella.

Rainfall in San José in January

Historically, the month has about 7 days of rain, averaging 139 mm (5.5 in) in total. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.

Temperature in San José in January

January in San José brings typical temperatures with highs around 25°C (77°F) and lows of 12°C (54°F). The month of January belongs to the summer season. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 12°C (54°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. On average, it sees the highest temps of the year.

Sunshine in San José in January

With approximately 311 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If you favor pleasant temperatures and minimal rainfall, January is one of the best months to visit San José.

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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 January

Min Temperature 12°C (54°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 23%  

Precipitation 139 mm (5.5 in)  

Rainy days 7 days  

Humidity 50% *  

Sunshine 311 hours *  

Percentage Sunshine 67% *  

* Data from: Mendoza, Argentina (63 KM, 39 Miles).

What to Wear in San José in January

For San José in January, 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in San José in January

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

Swimming

9/10

Cycling

9/10

Walking

9/10

Camping

6/10

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 Sunshine Humidity

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