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San José Weather in December
During December, San José experiences very high daytime temperatures of 31°C (88°F) and cooler nights around 18°C (64°F). Expect quite a bit of rainfall. Around 121 mm (4.8 in) is typical.
Rainfall in San José in December
Historically, the month has about 8 days of rain, averaging 121 mm (4.8 in) in total. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in San José in December
December in San José brings very high temperatures, with highs of 31°C (88°F) and nights around 18°C (64°F). For most visitors, the main thing to prepare for is the heat during the day. At 18°C (64°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit San José. Our weather planner can help you explore destinations with more pleasant weather conditions.
San José Temperature in December
Min Temperature
18°C (64°F)
Max Temperature
31°C (88°F)
Chance of Rain
28%
Precipitation
121 mm (4.8 in)
Rainy days
8 days
San José Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San José - and find the best time to visit.
Best Places in Argentina in December
Find out more about the weather in Argentina and which places have the best travel conditions in this month. See all of Argentina in December →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in San José in December
Warm temperatures in December 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. Prepare for significant rainfall with proper waterproof clothing and shoes.
What To Do in San José in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
San José 3-Day Forecast
More climate data for San José
See the full San José climate overview or explore weather in Argentina.
Popular in December
Where to go in December - average daytime high across popular destinations.
Córdoba
30°C (86°F) Mendoza
30°C (86°F) Buenos Aires29°C (84°F) Villa Carlos Paz
27°C (81°F) Salta25°C (77°F) Mar del Plata24°C (75°F) San Martín de los Andes
18°C (64°F) San Carlos de Bariloche18°C (64°F) Bucket list
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