# correlation coefficient for non normal distribution (weibull)

I work with wind data. In order to estimate the strength of the correlation between two anenometers, in my department they usually calculate the pearson R.

As far as I know the pearson R should be used under 2 assumptions: -Linear relationship between the variables (yes) -The data follows a normal distribution (no, as wind data has a weibull distribution)

Should we use then a non parametric coefficient like spearman to calculate the correlation?