Last updated: August 23, 2025
In April, the average temperature in Boulogne-sur-Mer, France hovers around 10°C (50°F), with a minimum of 1°C (35°F) and a pleasant maximum of 20°C (69°F). Expect about 31 mm (1.2 in) of precipitation spread across 8 days, resulting in an average humidity level of 85%. Prepare for a moist but mild climate as you explore this charming destination!
In April in Boulogne-sur-Mer, the average temperature is 10°C (50°F). Maximums can reach 20°C (69°F) and minimums can be as low as 1°C (35°F). Overall, this mild climate makes Boulogne-sur-Mer an attractive destination for travelers seeking comfortable weather during this time of year.
In Boulogne-sur-Mer in April, the precipitation amount is 31 mm (1.2 in) over the course of 8 days.
In Boulogne-sur-Mer in April, humidity is 85%. With an average temperature of 10°C (50°F), this humidity feels like a heavy, damp blanket surrounding you, making travel feel sluggish and uncomfortable as you navigate through the thick, moist air.
In Boulogne-sur-Mer in April, 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 Boulogne-sur-Mer.
UV Risk Categories
Weather in Boulogne-sur-Mer varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Boulogne-sur-Mer, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 6°C (43°F) | 81 mm (3.2 inches) | 91% | low |
| February Weather | 7°C (44°F) | 74 mm (2.9 inches) | 89% | low |
| March Weather | 8°C (46°F) | 73 mm (2.9 inches) | 86% | moderate |
| April Weather | 10°C (50°F) | 31 mm (1.2 inches) | 85% | moderate |
| May Weather | 12°C (54°F) | 61 mm (2.4 inches) | 82% | high |
| June Weather | 16°C (61°F) | 67 mm (2.6 inches) | 81% | very high |
| July Weather | 18°C (64°F) | 49 mm (1.9 inches) | 76% | very high |
| August Weather | 18°C (65°F) | 74 mm (2.9 inches) | 73% | high |
| September Weather | 16°C (61°F) | 67 mm (2.7 inches) | 80% | moderate |
| October Weather | 13°C (57°F) | 123 mm (4.8 inches) | 89% | moderate |
| November Weather | 10°C (49°F) | 104 mm (4.1 inches) | 92% | low |
| December Weather | 8°C (46°F) | 143 mm (5.6 inches) | 92% | low |