San Juan Weather in March
March in San Juan brings high temperatures, with highs of 29°C (84°F) and nights dropping to 16°C (61°F). With perfect weather conditions overall, it's a good time to visit.
Rainfall in San Juan in March
The climate data from previous years indicates about 4 days of rain, averaging 39 mm (1.5 in) for the month. When rain does fall this month, it tends to come down hard. The low number of rain days makes each shower more significant.
Temperature in San Juan in March
The temperature in San Juan in March is perfect. Daytime highs reach 29°C (84°F), with nights dropping to 16°C (61°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights drop to around 16°C (61°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in San Juan in March
With approximately 284 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If you're inclined towards comfortable temperatures and drier conditions, March is a good time to visit San Juan.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Argentina, check out our San Juan's climate page.
San Juan Temperature in March
Min Temperature
16°C (61°F)
Max Temperature
29°C (84°F)
Chance of Rain
13%
Precipitation
39 mm (1.5 in)
Rainy days
4 days
Humidity
55%
Sunshine
284 hours
Percentage Sunshine
74%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Juan typically drop from around 32°C (90°F) at the start of March to approximately 27°C (81°F) by the end. Nights are pleasant, with lows typically ranging from 14°C (57°F) to 19°C (66°F).
Average temperatures in March
Historical weather for San Juan in March
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 March
The extremes listed below come from historical weather data collected in San Juan from 1976 through 2026.
- On March 14, 2002, temperatures climbed to 41°C (106°F), marking the warmest March day on record.
- The lowest overnight temperature recorded in March was 4°C (39°F) (March 31, 1977).
Best Places in Argentina in March
Find out more about the weather in Argentina and which places have the best travel conditions in this month. See all of Argentina in March →
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unpleasant
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What to Wear in San Juan in March
Warm temperatures in March 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. Pack a light rain jacket or compact umbrella for occasional 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 March
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Argentina, check out our San Juan's climate page.
Temperature Rainfall Sunshine Humidity
See the full San Juan climate overview or explore weather in Argentina.
