Over the past 10 years, Amsterdam Marathon runners have faced temperatures ranging from 9\u00b0C (48\u00b0F) on cooler years to 16\u00b0C (61\u00b0F) in warmer editions. The median temperature of 12\u00b0C (54\u00b0F) puts this race in the neutral category for running conditions.
Wind speeds average 14 km/h during race hours, with peak gusts reaching 23 km/h in challenging years. Humidity sits around 83%, and there is a 20% chance of rain on race day.
These conditions translate to an estimated pace impact of +3.0% compared to ideal running conditions. For a 4-hour marathoner, that means roughly 7 minutes slower than a perfect-weather day.