Annual mean 12°C · wettest around March · prevailing wind SW
Warmest
27.5 °C
Coldest
-0.8 °C
Wettest
50%
Windiest
6.0 m/s
Prevailing
SW
4.7 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Sidney over the whole year is 12°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -3°C. Sidney has no sharply defined rainy season: the chance of rain on a given day runs from 44% in August, the driest month, to 49% in March, the wettest. Winds in Sidney are highest in March, averaging 4.5 m/s (16 km/h), and lightest in August, at 2.4 m/s (9 km/h). The prevailing wind is from the SW. The clearest skies in Sidney come in July, when the sky is typically 37% covered; January is the cloudiest month, at 67%.
Month by month Sidney 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
-0°C
-3°C
-6°C
46%
67%
4.4 m/s
0
0
5
February
3°C
-1°C
-3°C
47%
56%
4.4 m/s
2
0
13
March
8°C
2°C
3°C
49%
54%
4.5 m/s
8
0
28
April
14°C
7°C
9°C
49%
53%
4.3 m/s
26
1
52
May
20°C
14°C
18°C
49%
47%
3.7 m/s
57
17
58
June
26°C
19°C
24°C
47%
38%
3.4 m/s
63
41
36
July
27°C
21°C
28°C
47%
37%
2.6 m/s
44
64
13
August
26°C
19°C
27°C
44%
38%
2.4 m/s
51
56
21
September
24°C
15°C
23°C
45%
37%
2.5 m/s
63
39
43
October
17°C
10°C
14°C
46%
45%
3.3 m/s
42
9
61
November
9°C
3°C
4°C
47%
49%
3.9 m/s
9
0
32
December
3°C
-0°C
-2°C
47%
61%
4.1 m/s
0
0
11
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 Sidney weather by season
Year round, Sidney has days of about -0°C at their warmest in January, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -3°C to 21°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around March and least likely around August. 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.
Sidney weather in winterDecember to February
High 2°CLow -2°CRain 47%
Winter in Sidney has typical daily highs of about 2°C and lows of about -2°C, with a 47% chance of rain on a given day.
Sidney weather in springMarch to May
High 14°CLow 8°CRain 49%
Spring in Sidney has typical daily highs of about 14°C and lows of about 8°C, with a 49% chance of rain on a given day.
Sidney weather in summerJune to August
High 26°CLow 19°CRain 46%
Summer in Sidney has typical daily highs of about 26°C and lows of about 19°C, with a 46% chance of rain on a given day.
Sidney weather in autumnSeptember to November
High 17°CLow 9°CRain 46%
Autumn in Sidney has typical daily highs of about 17°C and lows of about 9°C, with a 46% chance of rain on a given day.
When is the rainy season in Sidney?
Sidney has no sharply defined rainy season: the chance of rain on a given day runs from 44% in August, the driest month, to 49% in March, the wettest.
What time of year is Sidney windiest?
Winds in Sidney are highest in March, averaging 4.5 m/s (16 km/h), and lightest in August, at 2.4 m/s (9 km/h). The prevailing wind is from the SW.
What is the average temperature in Sidney year round?
The average temperature in Sidney over the whole year is 12°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -3°C.