Annual mean 12°C · wettest around December · prevailing wind SW
Warmest
22.5 °C
Coldest
6.1 °C
Wettest
21%
Windiest
5.5 m/s
Prevailing
SW
4.6 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
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 Sunbury over the whole year is 12°C. July is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C. Sunbury has no sharply defined rainy season: the chance of rain on a given day runs from 10% in August, the driest month, to 18% in December, the wettest. Winds in Sunbury are highest in February, averaging 4.4 m/s (16 km/h), and lightest in September, at 3.4 m/s (12 km/h). The prevailing wind is from the SW. The clearest skies in Sunbury come in August, when the sky is typically 51% covered; December is the cloudiest month, at 70%.
Month by month Sunbury 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
7°C
4°C
2°C
16%
65%
3.9 m/s
0
0
16
February
9°C
5°C
3°C
16%
63%
4.4 m/s
0
0
28
March
10°C
6°C
5°C
16%
63%
4.1 m/s
3
0
41
April
13°C
7°C
9°C
11%
51%
3.7 m/s
14
0
65
May
17°C
11°C
14°C
11%
52%
3.5 m/s
43
1
84
June
20°C
14°C
18°C
11%
52%
3.8 m/s
69
12
77
July
22°C
16°C
20°C
11%
54%
3.6 m/s
79
16
71
August
22°C
15°C
19°C
10%
51%
3.6 m/s
80
14
73
September
19°C
13°C
17°C
12%
55%
3.4 m/s
64
6
82
October
15°C
11°C
12°C
17%
60%
3.6 m/s
25
0
83
November
10°C
7°C
6°C
16%
63%
3.6 m/s
1
0
50
December
8°C
6°C
4°C
18%
70%
4.0 m/s
0
0
29
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 Sunbury weather by season
Year round, Sunbury has days of about 7°C at their warmest in January, its coolest month, and 22°C in July, its warmest; the coolest hours of the day run from 4°C to 16°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around December 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.
Sunbury weather in winterDecember to February
High 8°CLow 5°CRain 17%
Winter in Sunbury has typical daily highs of about 8°C and lows of about 5°C, with a 17% chance of rain on a given day.
Sunbury weather in springMarch to May
High 14°CLow 8°CRain 13%
Spring in Sunbury has typical daily highs of about 14°C and lows of about 8°C, with a 13% chance of rain on a given day.
Sunbury weather in summerJune to August
High 21°CLow 15°CRain 11%
Summer in Sunbury has typical daily highs of about 21°C and lows of about 15°C, with a 11% chance of rain on a given day.
Sunbury weather in autumnSeptember to November
High 15°CLow 10°CRain 15%
Autumn in Sunbury has typical daily highs of about 15°C and lows of about 10°C, with a 15% chance of rain on a given day.
When is the rainy season in Sunbury?
Sunbury has no sharply defined rainy season: the chance of rain on a given day runs from 10% in August, the driest month, to 18% in December, the wettest.
What time of year is Sunbury windiest?
Winds in Sunbury are highest in February, averaging 4.4 m/s (16 km/h), and lightest in September, at 3.4 m/s (12 km/h). The prevailing wind is from the SW.
What is the average temperature in Sunbury year round?
The average temperature in Sunbury over the whole year is 12°C. July is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C.