Last updated: August 27, 2025
In Sao Juliao, Portugal, the average temperature in September hovers around 23°C (73°F), providing a comfortable climate for visitors. However, be prepared for temperature fluctuations, as the minimum can drop to 10°C (50°F) and the maximum can soar to 37°C (98°F). During this month, expect about a modest 31 mm (1.2 in) of precipitation spread over 4 days, alongside an average humidity level of 53%. Whether you're packing for a warm day or a cooler evening, this climate is sure to delight!
In September in Sao Juliao, the average temperature is 23°C (73°F). Maximums can reach 37°C (98°F) and minimums can be as low as 10°C (50°F). It's a great time to visit, as the weather offers a warm climate ideal for both outdoor activities and relaxation.
In Sao Juliao in September, the total precipitation amount is 31 mm (1.2 in) over a span of 4 days.
In Sao Juliao in September, humidity is 53%. With an average temperature of 23°C (73°F), this humidity feels like a comfortable embrace, making it ideal for leisurely strolls or exploring the sights without feeling overwhelmed.
In Sao Juliao in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Sao Juliao.
UV Risk Categories
Weather in Sao Juliao varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sao Juliao, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 8°C (47°F) | 32 mm (1.3 inches) | 87% | moderate |
| February Weather | 11°C (51°F) | 47 mm (1.9 inches) | 76% | moderate |
| March Weather | 12°C (54°F) | 87 mm (3.4 inches) | 68% | high |
| April Weather | 14°C (58°F) | 81 mm (3.2 inches) | 64% | very high |
| May Weather | 19°C (66°F) | 41 mm (1.6 inches) | 62% | very high |
| June Weather | 22°C (71°F) | 13 mm (0.5 inches) | 47% | extreme |
| July Weather | 25°C (77°F) | 4 mm (0.2 inches) | 46% | very high |
| August Weather | 25°C (78°F) | 7 mm (0.3 inches) | 42% | very high |
| September Weather | 23°C (73°F) | 31 mm (1.2 inches) | 53% | very high |
| October Weather | 18°C (65°F) | 51 mm (2.0 inches) | 69% | high |
| November Weather | 12°C (54°F) | 72 mm (2.9 inches) | 85% | moderate |
| December Weather | 10°C (50°F) | 69 mm (2.7 inches) | 87% | moderate |