relatively dry for the first two weeks then much colder
and wetter. The warmth and sunnier weather arrived for
the last week.
Temperatures were consistently in the mild to very mild
category up until the 13th, then it turned colder but
there were no really cold days except the 20th with a
maximum of just 0.9°C. The warmth returned with 13.4°C
on both the 29th & 30th.
month, keeping the trend of wetter than average months
going that started in June 2012. The Otter Valley did not
receive as much rainfall as other parts of Devon &
Cornwall, probably due to the rainfall shadow effect of
Dartmoor in a SW airstream.
often sees a few air frosts though this year there were
only two and both of these were not particularly severe.
Despite only two air frosts, there were plenty of grass
frosts and snow was seen falling on one day but it did
not settle on the ground.
amounts were well below average until the final week of
the month. This was mainly due to a very dull period of
weather that lasted from the 1st to the 9th. The month
also had 15 sunless days which is the highest number
recorded (by a long way) in any month. A sunnier end to
the month allowed sunshine levels to recover.
Soil temperatures rose slowly
at first but then declined rapidly with the colder
conditions of the late 2nd and 3rd weeks. A small
recovery occurred during the final week of the month as
very mild weather prevailed.
Overall this was quite a
breezy month but that is not unusual for January. There
were no high wind speeds though on the 28th,
gusts did reach 35 mph (60 kph). This is actually quite
low for a maximum January gust. Winds were dominant
from the north, south and south-westerly directions.
The rainfall duration of
74 hours and reflects the high amount of rainfall
that actually fell during this month.
Sea surface temperatures
fell sharply during the colder nights and days of the
late 2nd and 3rd weeks, but then rose again with the warmer
conditions from the 28th onwards.
Mean pressure was a little
below the average for December and indicative of the
unsettled conditions that dominated this month.
A new sensor has been
added that measures solar irradiance in watts per square
metre falling on a horizontal surface.
Dewpoints were above
Relative humidity was
a little above normal.