Last updated: August 22, 2025
In September, the average temperature in Hastiere-Lavaux, Belgium is a pleasant 15°C (59°F). However, be prepared for a range, as it can drop to a chilly 2°C (36°F) or rise to a warm 33°C (91°F). Expect 63 mm (2.5 in) of precipitation over about 10 days, contributing to an average humidity of 82%.
In September in Hastiere-Lavaux, the average temperature is 15°C (59°F). The maximum can reach 33°C (91°F), while the minimum can dip as low as 2°C (36°F). This diverse temperature range makes Hastiere-Lavaux an ideal destination for travelers seeking both warm days and cool nights.
In Hastiere-Lavaux in September, the precipitation amount is 63 mm (2.5 in) over a span of 10 days.
In Hastiere-Lavaux in September, humidity is 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.
In Hastiere-Lavaux 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 Hastiere-Lavaux.
UV Risk Categories
Weather in Hastiere-Lavaux varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Hastiere-Lavaux, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 73 mm (2.9 inches) | 91% | low |
| February Weather | 4°C (40°F) | 75 mm (3.0 inches) | 89% | moderate |
| March Weather | 7°C (44°F) | 82 mm (3.2 inches) | 87% | moderate |
| April Weather | 9°C (49°F) | 45 mm (1.8 inches) | 85% | moderate |
| May Weather | 13°C (55°F) | 73 mm (2.9 inches) | 82% | high |
| June Weather | 17°C (63°F) | 78 mm (3.1 inches) | 82% | very high |
| July Weather | 18°C (65°F) | 77 mm (3.0 inches) | 80% | very high |
| August Weather | 18°C (65°F) | 84 mm (3.3 inches) | 76% | high |
| September Weather | 15°C (59°F) | 63 mm (2.5 inches) | 82% | moderate |
| October Weather | 11°C (52°F) | 89 mm (3.5 inches) | 89% | moderate |
| November Weather | 6°C (44°F) | 62 mm (2.4 inches) | 92% | low |
| December Weather | 4°C (40°F) | 112 mm (4.4 inches) | 92% | low |