Last updated: August 27, 2025
In San Isidro, Spain, the average temperature in May hovers around 20°C (69°F), making it a pleasant time to visit. However, be prepared for fluctuations, as temperatures can dip to a cool 8°C (46°F) or soar to a warm 35°C (96°F). During your stay, you might encounter 25 mm (1.0 in) of precipitation spread across 3 days, contributing to an average humidity of 53%. Whether you're exploring the outdoors or enjoying local attractions, the weather is sure to play a role in your adventure!
In May in San Isidro, the average temperature is 20°C (69°F). Maximums can reach 35°C (96°F), while minimums can drop as low as 8°C (46°F). This diverse range makes it an ideal time for travelers to pack layers and enjoy both warm days and cooler evenings.
In San Isidro in May, the precipitation amount is 25 mm (1.0 in) over the course of 3 days.
In San Isidro in May humidity is 53%. With an average temperature of 20°C (69°F), this humidity feels like a gentle embrace, making it comfortable for traveling as long as you stay hydrated and take breaks in the shade.
In San Isidro in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in San Isidro.
UV Risk Categories
Weather in San Isidro varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in San Isidro, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 11°C (51°F) | 36 mm (1.4 inches) | 78% | moderate |
| February Weather | 13°C (55°F) | 12 mm (0.5 inches) | 75% | moderate |
| March Weather | 14°C (58°F) | 46 mm (1.8 inches) | 64% | high |
| April Weather | 16°C (61°F) | 52 mm (2.0 inches) | 58% | very high |
| May Weather | 20°C (69°F) | 25 mm (1.0 inches) | 53% | very high |
| June Weather | 24°C (76°F) | 28 mm (1.1 inches) | 49% | extreme |
| July Weather | 27°C (81°F) | 4 mm (0.1 inches) | 51% | extreme |
| August Weather | 27°C (81°F) | 23 mm (0.9 inches) | 51% | very high |
| September Weather | 24°C (76°F) | 58 mm (2.3 inches) | 58% | very high |
| October Weather | 19°C (67°F) | 33 mm (1.3 inches) | 71% | high |
| November Weather | 15°C (59°F) | 37 mm (1.5 inches) | 76% | moderate |
| December Weather | 12°C (54°F) | 16 mm (0.6 inches) | 80% | moderate |