Last updated: August 22, 2025
In San Juan, Argentina, the average temperature in October hovers around 19°C (67°F), creating a pleasant climate for outdoor activities. Expect temperatures to range from a cool 2°C (36°F) to a sizzling 38°C (100°F). With 13 mm (0.5 in) of precipitation spread over 3 days, the air remains relatively dry with an average humidity of 43%. Enjoy the balance of warmth and freshness this month brings!
In October in San Juan, the average temperature is 19°C (67°F). The maximum can reach 38°C (100°F), while the minimum can drop as low as 2°C (36°F). This range makes it essential for travelers to be prepared for both warm and cool conditions during their visit.
In San Juan in October, the precipitation amount is 13 mm (0.5 in) over a span of 3 days.
In San Juan in October, humidity is 43%. With an average temperature of 19°C (67°F), this humidity feels like a refreshing embrace, making it pleasant for traveling as it adds a slight crispness to the air, perfect for exploring the sights without feeling overheated.
In San Juan in October, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in San Juan.
UV Risk Categories
Weather in San Juan varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in San Juan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 27°C (80°F) | 19 mm (0.8 inches) | 44% | extreme |
| February Weather | 25°C (77°F) | 17 mm (0.7 inches) | 48% | extreme |
| March Weather | 22°C (72°F) | 17 mm (0.7 inches) | 56% | extreme |
| April Weather | 18°C (65°F) | 15 mm (0.6 inches) | 67% | very high |
| May Weather | 14°C (57°F) | 11 mm (0.4 inches) | 66% | high |
| June Weather | 9°C (49°F) | 6 mm (0.2 inches) | 58% | moderate |
| July Weather | 9°C (48°F) | 8 mm (0.3 inches) | 58% | moderate |
| August Weather | 12°C (54°F) | 3 mm (0.1 inches) | 52% | high |
| September Weather | 16°C (61°F) | 12 mm (0.5 inches) | 45% | very high |
| October Weather | 19°C (67°F) | 13 mm (0.5 inches) | 43% | extreme |
| November Weather | 23°C (73°F) | 14 mm (0.5 inches) | 41% | extreme |
| December Weather | 25°C (77°F) | 18 mm (0.7 inches) | 37% | extreme |