Annual mean 19°C · wettest around July · prevailing wind SW
Warmest
28.6 °C
Coldest
15.2 °C
Wettest
45%
Windiest
5.8 m/s
Prevailing
SW
5.2 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Kwinana over the whole year is 19°C. January is the hottest month, with highs of about 28°C; August is the coldest, with lows of about 12°C. The rainy (wet) season in Kwinana runs from May to September, peaking in July with a 37% chance of rain on a given day. The dry season is October to April; December is the driest month, at 5%. Winds in Kwinana are highest in December, averaging 5.9 m/s (21 km/h), and lightest in May, at 4.3 m/s (15 km/h). The prevailing wind is from the SW. The clearest skies in Kwinana come in January, when the sky is typically 24% covered; July is the cloudiest month, at 61%.
Month by month Kwinana climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
28°C
21°C
25°C
5%
24%
5.8 m/s
58
43
34
February
28°C
20°C
25°C
6%
28%
5.6 m/s
58
46
33
March
26°C
19°C
24°C
8%
35%
5.1 m/s
67
41
39
April
23°C
17°C
21°C
15%
40%
4.7 m/s
79
20
64
May
20°C
14°C
17°C
23%
42%
4.3 m/s
70
2
80
June
17°C
13°C
14°C
31%
52%
4.4 m/s
44
0
80
July
16°C
12°C
12°C
37%
61%
4.9 m/s
26
0
74
August
16°C
12°C
13°C
32%
56%
4.8 m/s
33
0
76
September
18°C
13°C
14°C
21%
48%
4.7 m/s
48
2
79
October
20°C
15°C
17°C
15%
45%
5.2 m/s
62
8
76
November
24°C
17°C
20°C
10%
32%
5.5 m/s
69
22
63
December
27°C
20°C
24°C
5%
26%
5.9 m/s
65
36
44
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Kwinana weather by season
Year round, Kwinana has days of about 16°C at their warmest in July, its coolest month, and 28°C in January, its warmest; the coolest hours of the day run from 12°C to 21°C through the year, and the average temperature over the year is 19°C around the clock. Rain is most likely around July and least likely around December. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Kwinana weather in winterJune to August
High 16°CLow 12°CRain 34%
Winter in Kwinana has typical daily highs of about 16°C and lows of about 12°C, with a 34% chance of rain on a given day.
Kwinana weather in springSeptember to November
High 21°CLow 15°CRain 15%
Spring in Kwinana has typical daily highs of about 21°C and lows of about 15°C, with a 15% chance of rain on a given day.
Kwinana weather in summerDecember to February
High 28°CLow 20°CRain 5%
Summer in Kwinana has typical daily highs of about 28°C and lows of about 20°C, with a 5% chance of rain on a given day.
Kwinana weather in autumnMarch to May
High 23°CLow 17°CRain 15%
Autumn in Kwinana has typical daily highs of about 23°C and lows of about 17°C, with a 15% chance of rain on a given day.
When is the rainy season in Kwinana?
The rainy (wet) season in Kwinana runs from May to September, peaking in July with a 37% chance of rain on a given day. The dry season is October to April; December is the driest month, at 5%.
What time of year is Kwinana windiest?
Winds in Kwinana are highest in December, averaging 5.9 m/s (21 km/h), and lightest in May, at 4.3 m/s (15 km/h). The prevailing wind is from the SW.
What is the average temperature in Kwinana year round?
The average temperature in Kwinana over the whole year is 19°C. January is the hottest month, with highs of about 28°C; August is the coldest, with lows of about 12°C.