July 2022 Weather Report

 I have completed my initial work on the Census, but am now afflicted with a revolting cold and finding it best to lie in bed rather than sit at a keyboard.  So this will be a very brief summary of what has happened, weatherwise.  

I am tempted to say the month was looking towards a return of La Nina: damp and a little warmer than average for the month.

Rain

For my weather station (WS) overall 105.6 mm of rain fell, amounting to 153% of the median fall for July.  The BoM Mallacoota site recorded 96.6 mm (130.4% of average) while Gabo Island was at 85.0 mm (114.7% of average). 

Of the 42 Julys for which I have records (BoM Mallacoota prior to 2019) only 9 had higher rainfall.  

That has ended, at 2, the run of months in a row of below median rainfall.  Hanrahan should be resuming his seat.

Temperatures

The anomaly (difference between current average temperature and long term mean) was +0.08C.  Effectively saying that on average it was about normal.  However days with an above average minimum and below average maximum were well over-represented in the mix.  This was the net effect of a warm start to the month followed by a cool patch from 11 -21 June with a brief return to warm before a cood conclusion.  This is illustrated by a chart of BoM data.

The mean daily minimum temperature at the BoM was 7.38C compared to a long term average minimum for July of 6.3C.  The lowest temperature recorded there  was 2.1C on the 31st.  For my WS the daily average minimum was lower, at 7.07C with a monthly low of 2.8C on the 20th.  In terms of impact on our activities there were a few mornings where the temperature was low enough to make the wooden boardwalks along the Lake treacherous

The mean daily maximum temperature at the BoM was 14.13C compared to a long term average maximum for July of 15.0C.  The highest temperature recorded there was 19.2C on the 17th.  For my WS the daily average maximum was a tad lower, at 13.87C with the same monthly high of 19.2C on the 17th.

Overall the two data series correlate well with R2 values of 77% for Minimum and 95% for Maximum.  It was surprising to find BoM higher than my WS by ~3C on a few  mornings: I attribute this to a warm(er) sea breeze than the air emerging from the Narrows and impacting my WS.

Humidity

My WS has recorded average humidities for the month at 0900 hrs of 86.2% and at 1500 hrs of 77.5%.  For both times these values are above June 2019 and the average for the 3 earlier years for which I have records (BoM doesn't have free access to historic humidity data).  This is not surprising considering the well above median rainfall.