Last updated: August 27, 2025
In September, the average temperature in Santa Cruz, Portugal is a pleasant 18°C (65°F). Expect a minimum chill of 4°C (40°F) and the occasional high of 32°C (89°F). During this period, 30 mm (1.2 in) of precipitation typically falls over 5 days, contributing to an average humidity of 71%. 🌦️
In September in Santa Cruz, the average temperature is 18°C (65°F). The maximum can reach 32°C (89°F), and the minimum can be as low as 4°C (40°F). This makes it an ideal time for travelers to enjoy a mix of warm days and cool evenings while exploring the area.
In Santa Cruz in September, the precipitation amount is 30 mm (1.2 in) over the course of 5 days.
In Santa Cruz in September humidity is 71%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it a bit sticky and muggy, which can be slightly uncomfortable for traveling, especially if you're engaging in outdoor activities or exploring the city on foot.
In Santa Cruz 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 Santa Cruz.
UV Risk Categories
Weather in Santa Cruz varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santa Cruz, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (42°F) | 43 mm (1.7 inches) | 87% | low |
| February Weather | 8°C (46°F) | 87 mm (3.4 inches) | 81% | moderate |
| March Weather | 9°C (48°F) | 90 mm (3.5 inches) | 78% | high |
| April Weather | 11°C (52°F) | 90 mm (3.5 inches) | 79% | very high |
| May Weather | 15°C (59°F) | 49 mm (1.9 inches) | 78% | very high |
| June Weather | 18°C (64°F) | 39 mm (1.5 inches) | 71% | extreme |
| July Weather | 21°C (69°F) | 19 mm (0.8 inches) | 63% | very high |
| August Weather | 20°C (69°F) | 15 mm (0.6 inches) | 64% | very high |
| September Weather | 18°C (65°F) | 30 mm (1.2 inches) | 71% | very high |
| October Weather | 14°C (57°F) | 71 mm (2.8 inches) | 79% | high |
| November Weather | 9°C (48°F) | 80 mm (3.2 inches) | 86% | moderate |
| December Weather | 7°C (45°F) | 114 mm (4.5 inches) | 87% | low |