Winds of the North Sea in 2050 (WINS50): wind speed, wind direction, temperature, pressure and relative humidity at 10-600 meter height from a reanalysis for 2019-2021 with the NWP model HARMONIE-AROME nested in the ECMWF reanalysis ERA5. The HARMONIE-AROME simulation includes a wind farm parameterization (Fitch et al., 2012) using realistic turbine locations and properties over sea and over land for the simulated years. Data are stored as time series for individual grid points in a subdomain covering the Netherlands.