Last updated: August 27, 2025
In San Isidro, Spain, the average temperature in September is a pleasant 22°C (72°F), with minimums dipping to 20°C (68°F) and maximums reaching up to 29°C (84°F). Visitors should be prepared for some light rain, as the area experiences an average precipitation of 9 mm (0.4 in) over 2 days. Furthermore, with an average humidity of 88%, the atmosphere feels quite tropical and comfortable.
In September in San Isidro, the average temperature is 22°C (72°F). Maximums can reach 29°C (84°F), and minimums can drop to as low as 20°C (68°F). This pleasant temperature range makes San Isidro an ideal destination for outdoor activities and sightseeing during this time.
In San Isidro in September, the precipitation amount is 9 mm (0.4 in) over the course of 2 days.
In San Isidro in September humidity is 88%. With an average temperature of 22°C (72°F), this humidity feels like a warm, steamy embrace that clings to your skin, making outdoor exploration a sweaty challenge but also a vibrant experience as the air is thick with the scent of nature and vibrant local life.
In San Isidro in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 September’s weather to other months in San Isidro, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 17°C (63°F) | 36 mm (1.4 inches) | 73% | moderate |
| February Weather | 17°C (63°F) | 38 mm (1.5 inches) | 76% | high |
| March Weather | 17°C (62°F) | 43 mm (1.7 inches) | 81% | very high |
| April Weather | 17°C (63°F) | 52 mm (2.0 inches) | 83% | extreme |
| May Weather | 19°C (66°F) | 35 mm (1.4 inches) | 82% | extreme |
| June Weather | 20°C (68°F) | 14 mm (0.6 inches) | 85% | extreme |
| July Weather | 22°C (72°F) | 2 mm (0.1 inches) | 89% | extreme |
| August Weather | 23°C (74°F) | 1 mm (0.1 inches) | 90% | extreme |
| September Weather | 22°C (72°F) | 9 mm (0.4 inches) | 88% | extreme |
| October Weather | 22°C (71°F) | 22 mm (0.9 inches) | 85% | very high |
| November Weather | 20°C (67°F) | 31 mm (1.2 inches) | 80% | high |
| December Weather | 18°C (65°F) | 25 mm (1.0 inches) | 74% | high |