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Flesje and Ullensvang 100, Vossevangen 140, and Røldal 165.
April is the first month in the year that for all, even the highest
lying stations, has a mean temperature above 32°, and in May the
temperature rises rapidly, especially in the fjords.
Wind. Out at the extreme west coast stations, calm prevails
comparatively seldom. The average velocity of the wind is from
18 to 20 miles an hour, and storms are frequent. At Hellisø and
Ona, there are between 60 and 70 stormy days in the course of
the year, while both the mean velocity and the number of stormy
days diminishes on coming within the belt of rocks and islands,
into the fjords, and up the mountain passes, where the average
velocity is not much above 2 miles an hour, and where storms are
of extremely rare occurrence, on an average, 2 or 3 times a year.
Most of the storms, both on the coast and farther inland, are
in the winter, and usually from the S, while the prevailing
wind in the winter is generally a land wind, in the summer, a
sea-breeze.
Rainfall. The annual rainfall is very great over the whole
of western Norway. A little within the coast there lies a series
of sharply defined zones, one after another, from S to N, about the
stations Nedrebø, Jøsendal, Farstveit, and Daviken, with an annual
rainfall exceeding 83 inches. From these maxima, we find that the
rainfall becomes rapidly less towards the east, and on coming up
on to the mountain wildernesses that border south-eastern Norway.
Westwards towards the sea, it diminishes much more slowly, the
extreme coast line in the south having an annual rainfall of about
39 inches, immediately outside Bergen 51 inches (Bergen itself has
75 inches), outside Florø 75 inches and at Kristiansund 39 inches.
The rainfall axis indicated by the above maximal stations, is continued
southwards and eastwards within the coast-line, which it follows; and
it can be traced right on to the previously mentioned rainfall
maximum north of Kristiania. The average number of days in the year
when rain or snow falls is lowest — 121 — in the Sogne Fjord,
but reaches 200 towards the coast. Most rain falls during the
autumn and the first months of winter. January has, on an
average, most wet days, while, as in south-eastern Norway, April
has both least rain and fewest wet days. Rain or snow falls
more regularly and continuously in winter than in summer.
Snow is comparatively less frequent, which is of course due
to the mild winter temperature. The number of days on which
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