This dataset depends on the following independent variable (i.e, grid):
grid: /T (months since 1960-01-01) periodic [ (0000 6 Jan - 0000 16 Jan) (0000 16 Jan - 0000 1 Feb) (0000 1 Feb - 0000 16 Feb) (0000 16 Feb - 0000 26 Feb) (0000 26 Feb - 0000 6 Mar) (0000 6 Mar - 0000 16 Mar) (0000 16 Mar - 0000 26 Mar) (0000 26 Mar - 0000 1 Apr) (0000 1 Apr - 0000 6 Apr) (0000 6 Apr - 0000 16 Apr) (0000 16 Apr - 0000 1 May) (0000 1 May - 0000 16 May) (0000 16 May - 0000 26 May) (0000 26 May - 0000 6 Jun) (0000 6 Jun - 0000 16 Jun) (0000 16 Jun - 0000 26 Jun) (0000 26 Jun - 0000 1 Jul) (0000 1 Jul - 0000 6 Jul) (0000 6 Jul - 0000 16 Jul) (0000 16 Jul - 0000 1 Aug) (0000 1 Aug - 0000 16 Aug) (0000 16 Aug - 0000 26 Aug) (0000 26 Aug - 0000 1 Sep) (0000 1 Sep - 0000 6 Sep) (0000 6 Sep - 0000 21 Sep) (0000 21 Sep - 0000 1 Oct) (0000 1 Oct - 0000 6 Oct) (0000 6 Oct - 0000 16 Oct) (0000 16 Oct - 0000 1 Nov) (0000 1 Nov - 0000 11 Nov) (0000 11 Nov - 0000 16 Nov) (0000 16 Nov - 0000 1 Dec) (0000 1 Dec - 0000 16 Dec) (0000 16 Dec - 0000 26 Dec) (0000 26 Dec - 0000 6 Jan)] :grid
so there will be 35 links below for the different files.
You may want to get a utility like wget which can download sets of files. For example (all one line)
wget -r -l2 -nd --no-parent -e robots=off -v --relative 'http://maproom.metmalawi.gov.mw:8091/SOURCES/.Malawi/.dekadal/.rainfall/.rfe_mergeddiff_percent/%5BY%5Dpartial/yearly-climatology/%5BT%5Dpartial/%5BT%5Ddifferences/T+differences/downloadsarcinfo.html'
single quotes are necessary in unix to protect the url from expansion; probably necessary in other cases as well