April 2018 Weather report
A few numbers in the draft report shown in the hard copy Gazette have changed since that was produced. They are shown in red below.
- very little rain (effectively one rainy day);
- warm temperatures (both maxima and minima averaging out at ~3oC above the long term average);
- low 3pm humidity; and
- above average gustiness.
I think people have been very responsible in not lighting up their piles, and we have been very lucky not to have had a nasty bushfire.
Basically 1 day of rain in the month giving a total (18.6mm) well below average and below last year.
The more worrying issue is that this year in total is very low. Year to the end of April we are at 42% of the average. It is the third lowest fall to the end of April.
The take away message from this is that we usually get an average of 53mm per month. This year (to date) we have scored an average of 23mm per month.
My starting point is the daily extremes.
As would be expected both series tend downwards over the month.
The average maximum (23.3oC) for April 2018 is well above both the long term average (+2.9oC) and the value for last year.
Looking at the average maximum since 2010 - more consistent sites - gives a slightly higher difference (+3.2oC).
As with the maximum temperature, the average minimum (8.4oC) is well above average (by +3.8oC) and last year.
It should come as no surprise that the mean temperature is also above average.
The standard for humidity is 3pm (1500 hrs). At that time the average humidity or April 2018 was well below average. This is quite consistent with the pathetic rainfall.
My usual cautions regarding the poor siting of my anemometer apply. That being said the month was above average in windiness, but less so than some recent months.