May 2025 Weather Report for South Holland
May 2025 brought relatively mild and notably dry conditions to South Holland, with temperatures hovering close to seasonal norms while sunshine exceeded expectations. The month presented a striking contrast between early warmth and a brief cold spell, accompanied by significantly below-average precipitation levels.
Temperature Overview
The average temperature for May in South Holland reached 14.0 degrees Celsius, which is marginally above the normal value of 13.9 degrees, representing a small positive anomaly of 0.1 degrees. The month opened with exceptional warmth on May 1st, when Vlaardingen recorded the month's highest temperature of 28.8 degrees Celsius. In sharp contrast, the coldest conditions occurred on May 5th in Waddinxveen, where temperatures plummeted to just 3.3 degrees Celsius, demonstrating the considerable temperature variability typical of spring weather in the region.
Precipitation Patterns
May proved to be a notably dry month across South Holland. The average total precipitation measured 48.0 millimeters, representing a significant 46 percent below the normal value of 89.3 millimeters. The wettest day occurred on May 27th in Alphen aan den Rijn, which recorded 35.5 millimeters of rainfall. This same location emerged as the wettest area for the entire month, accumulating a total of 60.3 millimeters, yet still remaining well below seasonal expectations.
Sunshine and Notable Observations
Sunshine hours exceeded seasonal averages, with the province recording 380.2 hours compared to the normal 359.8 hours, representing a positive anomaly of 6 percent. This above-average sunshine, combined with the dry conditions, created favorable conditions for outdoor activities throughout much of the month. The combination of reduced rainfall and increased sunshine hours made May 2025 a particularly pleasant spring month for residents of South Holland, despite the dramatic temperature swings experienced during the early part of the period.