May 2025 brought a notably dry and sunny month to Belgium, with temperatures running slightly above normal. The month presented an interesting contrast between early warmth and late-month cold snaps, while precipitation fell significantly short of seasonal expectations.
Temperature Overview
Belgium experienced an average temperature of 14.3 degrees Celsius during May, which is 0.5 degrees above the normal value of 13.8 degrees. The month featured considerable temperature variation across the country. The warmest reading came early in the month, with Hamont-Achel in the eastern Limburg region reaching 29.5 degrees on May 1st. In stark contrast, Bütgenbach in the High Fens recorded the month's lowest temperature of just 1.1 degrees on May 23rd, demonstrating the significant temperature swings that can occur during spring weather patterns.
Precipitation Patterns
May proved to be substantially drier than normal, with an average total of 49.1 millimeters compared to the seasonal normal of 81.7 millimeters. This represents a 40 percent deficit in rainfall. The wettest day of the month occurred on May 31st, when Les Bons Villers received 38.8 millimeters of precipitation. Despite this late-month rainfall event, the location of Nivelles recorded the highest total precipitation for the month at 94.2 millimeters, still reflecting the overall dry conditions that characterized most of the period.
Sunshine and Notable Conditions
The dry conditions were accompanied by above-average sunshine, with Belgium recording 335.9 hours of sunshine compared to the normal 321.8 hours, representing a 4 percent surplus. This combination of reduced rainfall and increased sunshine created favorable conditions for outdoor activities and agricultural development during the spring season. The month's weather pattern reflects a typical late spring situation with variable conditions, though the pronounced dry spell and extended sunshine hours made May 2025 a relatively pleasant month across Belgium.