Last updated: August 22, 2025
In Niel-bij-As, Belgium, the average temperature in September hovers around 15°C (60°F). Expect a minimum of 3°C (37°F) and a maximum soaring up to 34°C (94°F). During this time, precipitation measures approximately 61 mm (2.4 in) over about 10 days, contributing to an average humidity level of 81%. Whether you prefer the cozy chill or the warmth of the sun, September in Niel-bij-As offers a wonderfully diverse climate!
In September in Niel-bij-As, the average temperature is 15°C (60°F). The maximum can reach 34°C (94°F), and the minimum can be as low as 3°C (37°F). Be prepared for a range of temperatures, making it a good idea to pack layers for your travels.
In Niel-bij-As in September, the precipitation amount is 61 mm (2.4 in) over a span of 10 days.
In Niel-bij-As in September, humidity is 81%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sluggish and draining, which can challenge even the best-prepared traveler.
In Niel-bij-As 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 Niel-bij-As.
UV Risk Categories
Weather in Niel-bij-As varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Niel-bij-As, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (39°F) | 65 mm (2.6 inches) | 91% | low |
| February Weather | 5°C (42°F) | 72 mm (2.8 inches) | 90% | low |
| March Weather | 7°C (45°F) | 76 mm (3.0 inches) | 87% | moderate |
| April Weather | 10°C (51°F) | 35 mm (1.4 inches) | 84% | moderate |
| May Weather | 14°C (58°F) | 60 mm (2.4 inches) | 77% | high |
| June Weather | 19°C (66°F) | 78 mm (3.1 inches) | 74% | very high |
| July Weather | 19°C (67°F) | 76 mm (3.0 inches) | 72% | very high |
| August Weather | 19°C (67°F) | 78 mm (3.1 inches) | 71% | high |
| September Weather | 15°C (60°F) | 61 mm (2.4 inches) | 81% | moderate |
| October Weather | 12°C (54°F) | 84 mm (3.3 inches) | 88% | moderate |
| November Weather | 7°C (45°F) | 55 mm (2.2 inches) | 91% | low |
| December Weather | 5°C (42°F) | 96 mm (3.8 inches) | 92% | low |