The region's climate is greatly
influenced by the orographic characteristics and the
already mentioned fluvial network. The most significant
feature is the yearly rain levels - an average of 1500 mm
- and its irregular distribution along the year,
concentrated in Winter and Spring.
On the other hand, the air temperature
along the year develops similarly with the precipitation.
The higher temperatures occur at the same time as the
lowest precipitation - hot and dry end of Spring and
Summer - and the lower temperatures with the highest
precipitation - cold and rainy Winters.
In what concerns the annual average
temperature, the average of high temperatures and the
average of low temperatures is not too high, reflecting a
Regarding the terrain, the region has a
rather irregular topography, characterised by a compact
valley's system combined with the fluvial network,
developing from the seaside to the inland.