September 2025 in East Flanders was characterized by cooler than average temperatures and notably drier conditions compared to the seasonal norm. The month presented a mixed weather pattern with some warm early days followed by a significant cooling trend towards the end of the period.
Temperature Overview
The average temperature for September in East Flanders reached 15.5 degrees Celsius, which was 1.1 degrees below the normal value of 16.6 degrees. This represents a slight cooling anomaly for the month. The warmest day occurred on September 7 in Evergem, where temperatures climbed to 31.2 degrees Celsius, providing a taste of late summer warmth. In stark contrast, the coldest reading was recorded on September 27 in Maldegem, dropping to just 4.6 degrees Celsius, marking a dramatic shift as autumn progressed.
Precipitation Patterns
September proved to be significantly drier than typical, with an average total precipitation of 40.2 millimeters compared to the normal 67.0 millimeters. This represents a 40 percent deficit in rainfall for the month. The wettest single day occurred on September 11 in Oosterzele, where 14.5 millimeters fell. When examining total precipitation by location, Ronse emerged as the wettest area with 60.0 millimeters accumulated throughout the month.
Sunshine and Notable Conditions
Sunshine hours slightly exceeded the seasonal average, with 274.5 hours recorded compared to the normal 270.3 hours, representing a 2 percent increase. This above-average sunshine, combined with the reduced precipitation, created relatively pleasant conditions for much of the month, particularly during the early period when warmer temperatures prevailed.
The month demonstrated typical autumn transition characteristics, with the early warmth giving way to cooler conditions as September progressed toward October. The combination of below-average temperatures, significantly reduced rainfall, and slightly enhanced sunshine created conditions that were drier and somewhat cooler than the historical average for East Flanders.