This data set includes measurements from a weather station in the fjord Ameralik in southwest Greenland from 2019-01-01 to 2019-12-31. Air temperature, photosynthetically active radiation (PAR), wind speed, and wind direction were measured with 10 minute resolution using an Onset weather station located in the inner part of the fjord (64°13.42'N, 50°18.12'W). The data have been used to compliment a description of the seasonal hydrography of Ameralik.