Annual mean 12°C · wettest around June · prevailing wind E
Warmest
21.6 °C
Coldest
9.5 °C
Wettest
20%
Windiest
6.2 m/s
Prevailing
E
5.0 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 Rolleston over the whole year is 12°C. February is the hottest month, with highs of about 21°C; July is the coldest, with lows of about 4°C. Rolleston has no sharply defined rainy season: the chance of rain on a given day runs from 10% in February, the driest month, to 15% in June, the wettest. Winds in Rolleston are highest in January, averaging 4.8 m/s (17 km/h), and lightest in May, at 3.3 m/s (12 km/h). The prevailing wind is from the E. The clearest skies in Rolleston come in August, when the sky is typically 38% covered; December is the cloudiest month, at 49%.
Month by month Rolleston 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
20°C
14°C
17°C
10%
48%
4.8 m/s
62
10
73
February
21°C
13°C
17°C
10%
44%
4.6 m/s
65
10
73
March
18°C
12°C
15°C
10%
47%
4.2 m/s
54
5
77
April
16°C
9°C
13°C
11%
42%
3.7 m/s
35
0
81
May
14°C
7°C
10°C
12%
40%
3.3 m/s
17
0
74
June
10°C
5°C
7°C
15%
48%
3.3 m/s
3
0
53
July
10°C
4°C
6°C
15%
42%
3.3 m/s
1
0
47
August
11°C
4°C
7°C
11%
38%
3.5 m/s
5
0
55
September
14°C
6°C
9°C
11%
39%
4.1 m/s
14
0
64
October
15°C
8°C
11°C
13%
42%
4.3 m/s
26
0
71
November
17°C
11°C
13°C
11%
46%
4.5 m/s
39
2
78
December
19°C
14°C
15°C
12%
49%
4.8 m/s
50
5
77
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 Rolleston weather by season
Year round, Rolleston has days of about 10°C at their warmest in July, its coolest month, and 21°C in February, its warmest; the coolest hours of the day run from 4°C to 14°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around June and least likely around February. 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.
Rolleston weather in winterJune to August
High 11°CLow 4°CRain 14%
Winter in Rolleston has typical daily highs of about 11°C and lows of about 4°C, with a 14% chance of rain on a given day.
Rolleston weather in springSeptember to November
High 15°CLow 8°CRain 11%
Spring in Rolleston has typical daily highs of about 15°C and lows of about 8°C, with a 11% chance of rain on a given day.
Rolleston weather in summerDecember to February
High 20°CLow 14°CRain 11%
Summer in Rolleston has typical daily highs of about 20°C and lows of about 14°C, with a 11% chance of rain on a given day.
Rolleston weather in autumnMarch to May
High 16°CLow 9°CRain 11%
Autumn in Rolleston has typical daily highs of about 16°C and lows of about 9°C, with a 11% chance of rain on a given day.
When is the rainy season in Rolleston?
Rolleston has no sharply defined rainy season: the chance of rain on a given day runs from 10% in February, the driest month, to 15% in June, the wettest.
What time of year is Rolleston windiest?
Winds in Rolleston are highest in January, averaging 4.8 m/s (17 km/h), and lightest in May, at 3.3 m/s (12 km/h). The prevailing wind is from the E.
What is the average temperature in Rolleston year round?
The average temperature in Rolleston over the whole year is 12°C. February is the hottest month, with highs of about 21°C; July is the coldest, with lows of about 4°C.