Last updated: August 27, 2025
In Bosch en Duin, Netherlands, the average temperature in September is a mild 15°C (59°F). Expect temperature fluctuations, with a minimum dipping to 3°C (37°F) and a maximum soaring to 31°C (88°F). Be prepared for 70 mm (2.8 in) of precipitation spread over 11 days, and a rather high average humidity of 81%.
In September in Bosch en Duin, the average temperature is 15°C (59°F). Maximums can reach 31°C (88°F), and minimums can be as low as 3°C (37°F). This makes Bosch en Duin an ideal destination for travelers seeking mild weather with the potential for warm days and cool nights.
In Bosch en Duin in September, the precipitation amount is 70 mm (2.8 in) distributed over 11 days.
In Bosch en Duin in September humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.
In Bosch en Duin 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 Bosch en Duin.
UV Risk Categories
Weather in Bosch en Duin varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Bosch en Duin, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 60 mm (2.4 inches) | 91% | low |
| February Weather | 5°C (41°F) | 72 mm (2.8 inches) | 90% | low |
| March Weather | 7°C (45°F) | 72 mm (2.8 inches) | 87% | moderate |
| April Weather | 10°C (50°F) | 38 mm (1.5 inches) | 84% | moderate |
| May Weather | 13°C (56°F) | 63 mm (2.5 inches) | 77% | high |
| June Weather | 18°C (64°F) | 73 mm (2.9 inches) | 74% | very high |
| July Weather | 19°C (66°F) | 72 mm (2.8 inches) | 72% | very high |
| August Weather | 19°C (66°F) | 81 mm (3.2 inches) | 71% | high |
| September Weather | 15°C (59°F) | 70 mm (2.8 inches) | 81% | moderate |
| October Weather | 12°C (54°F) | 86 mm (3.4 inches) | 88% | moderate |
| November Weather | 7°C (46°F) | 52 mm (2.0 inches) | 91% | low |
| December Weather | 5°C (42°F) | 87 mm (3.4 inches) | 92% | low |