30
BAMOS
Dec 2018
Figure 3. Annual average count of “nice” days per city for groups of cities based on ranges in latitude (based
on data from 1970–2017). For each group of cities, the plot shows a box covering the interquartile range, inside
which is the median (as a line) and the mean (as a cross). The lines extending outside of the box show the
range of values from the minimum to the maximum, with any data more than 1.5 times the interquartile range
displayed as outlier points beyond those lines.
4. Results by latitude 5. Results by month
In general, the highest annual average counts of ‘nice’ days are
found in a band across the middle of Australia, extending from
about 23 °S to 30 °S (Figure 3). Averaged across the country, May has the most ‘nice’ days
in Australia’s cities, followed closely by April (Figure 4). Hot
conditions with high humidity and rain across the tropical north
during January result in it being the month with the smallest
count of ‘nice’ days for Australia.
The lowest annual average counts are found across Australia’s
tropical north, extending into northwest Western Australia,
where most towns have less than 10 “nice” days per year owing
to the very warm to hot temperatures all year round and the
frequently high humidity.
As you move south, the counts slowly decline, with Mildura in
Victoria’s Mallee district the most southerly town to have an
annual average near 80.
Figure 4. Monthly average
count of ‘nice’ days per
city for Australia (based on
data from 1970–2017).