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San Juan Weather in April
April in San Juan brings high temperatures, with daytime highs of 25°C (77°F) and nights around 11°C (52°F). The excellent weather makes it a solid choice for a visit.
Rainfall in San Juan in April
You can typically expect 2 days of rain this month, averaging around 29 mm (1.1 in). 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 Juan in April
If you're visiting San Juan in April, expect excellent temperatures with highs of 25°C (77°F) and overnight lows of 11°C (52°F). Overall, the month follows a fairly predictable daily temperature pattern. At 11°C (52°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.
Sunshine in San Juan in April
The month enjoys around 275 hours of sunshine, creating mostly sunny days with good weather conditions.If you're inclined towards comfortable temperatures and drier conditions, April is a good time to visit San Juan.
San Juan Temperature in April
Min Temperature
11°C (52°F)
Max Temperature
25°C (77°F)
Chance of Rain
8%
Precipitation
29 mm (1.1 in)
Rainy days
2 days
Humidity
58%
Sunshine
275 hours
Percentage Sunshine
81%
San Juan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Juan - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Juan typically drop from around 26°C (79°F) at the start of April to approximately 23°C (73°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 14°C (57°F).
Average temperatures in April
Historical weather records for San Juan in April
Browse day-by-day weather records for San Juan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Juan historical weather extremes in April
Based on weather observations in San Juan between 1976 and 2026, these are the recorded extremes during April.
- On April 6, 2002, temperatures climbed to 39°C (102°F), marking the warmest April day on record.
- The lowest overnight temperature recorded in April was 0°C (32°F) (April 29, 1989).
Best Places in Argentina in April
Find out more about the weather in Argentina and which places have the best travel conditions in this month. See all of Argentina in April →
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 Juan in April
For San Juan in April, 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. Some rain is possible, so pack something to handle light showers. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in San Juan in April
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Cycling10/10 -
Walking10/10 -
Barbeque10/10 -
Camping10/10 -
Outdoor sports10/10
San Juan 3-Day Forecast
More climate data for San Juan
Temperature Rainfall Sunshine Humidity
See the full San Juan climate overview or explore weather in Argentina.
Popular in April
Where to go in April - average daytime high across popular destinations.
Córdoba
24°C (75°F) Buenos Aires
24°C (75°F) Villa Carlos Paz22°C (72°F) Mendoza22°C (72°F) Salta
21°C (70°F) Mar del Plata20°C (68°F) San Martín de los Andes
13°C (55°F) San Carlos de Bariloche13°C (55°F) Bucket list
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