Last updated: August 27, 2025
In September, the average temperature in Surte, Sweden hovers around 13°C (56°F), creating a mild yet inviting atmosphere. Expect temperatures to range from a chilly 1°C (34°F) at night to a pleasant 24°C (75°F) during the day. However, be prepared for some rainfall, as precipitation averages 110 mm (4.3 in) over 15 days, accompanied by a high humidity level of 85%.
In September in Surte, the average temperature is 13°C (56°F). The maximum can reach 24°C (75°F) and the minimum can be as low as 1°C (34°F). It's a great time to explore Surte with mild days and cooler nights.
In Surte in September, the precipitation amount is 110 mm (4.3 in) over the course of 15 days.
In Surte in September humidity is 85%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that wraps around you, making outdoor activities feel heavier and less enjoyable, as layers of clothing cling to the skin and breath becomes visible in the moist air.
In Surte in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Surte.
UV Risk Categories
Weather in Surte varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Surte, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (35°F) | 52 mm (2.0 inches) | 92% | low |
| February Weather | 1°C (34°F) | 71 mm (2.8 inches) | 91% | low |
| March Weather | 3°C (37°F) | 70 mm (2.7 inches) | 89% | moderate |
| April Weather | 7°C (44°F) | 39 mm (1.5 inches) | 84% | moderate |
| May Weather | 11°C (52°F) | 82 mm (3.2 inches) | 75% | high |
| June Weather | 16°C (62°F) | 80 mm (3.1 inches) | 73% | high |
| July Weather | 17°C (63°F) | 99 mm (3.9 inches) | 73% | high |
| August Weather | 16°C (62°F) | 133 mm (5.3 inches) | 77% | high |
| September Weather | 13°C (56°F) | 110 mm (4.3 inches) | 85% | moderate |
| October Weather | 9°C (49°F) | 117 mm (4.6 inches) | 91% | low |
| November Weather | 5°C (42°F) | 75 mm (3.0 inches) | 92% | low |
| December Weather | 2°C (36°F) | 72 mm (2.9 inches) | 91% | low |