On 01/11/2018 10:57, Freddie wrote:
A large portion (8/23) of the "rain days" I recorded in October were due to dew or frost melt. My question is - should they count towards the "rain days" total for the month? It has been a fairly dry October here in the Rhondda (190 mm - 73% of the eLTA) and I think that 23 "rain days" is unrepresentative.

My Davis TBR frequently gives daily 0.2 mm tips, sometimes 0.4 mm if the
dew is particularly heavy whilst my copper 5" rain gauge remains bone dry.

The large plastic funnel of the Davis TBR seems to be a big condensation
trap. I use the copper gauge for calculating actual 'rain' and 'wet'
days and ignore the Davis TBR otherwise nearly every day last week would
have been a 'rain' day.

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk