The archipelago is spread out in the area between 37° N and the parallels of latitude that pass through the Lisbon area (38° 43' / 38° 55' N), giving it a generally tepid, oceanic, subtropical climate, with mild annual oscillations. Daily maximum temperatures usually range between . The average annual rainfall increases from east to west, ranging from 700 to 1600 millimetres (27.6-63 in) in the east and reaching on Mount Pico, the highest Portuguese mountain at .