Annual mean 13°C · wettest around July · prevailing wind W
Warmest
21.9 °C
Coldest
10.9 °C
Wettest
28%
Windiest
7.7 m/s
Prevailing
W
5.8 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 Whanganui over the whole year is 13°C. January is the hottest month, with highs of about 21°C; August is the coldest, with lows of about 7°C. Whanganui has no sharply defined rainy season: the chance of rain on a given day runs from 12% in January, the driest month, to 23% in July, the wettest. Winds in Whanganui are highest in July, averaging 5.3 m/s (19 km/h), and lightest in April, at 4.3 m/s (15 km/h). The prevailing wind is from the W. The clearest skies in Whanganui come in February, when the sky is typically 56% covered; January is the cloudiest month, at 80%.
Month by month Whanganui 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
21°C
15°C
17°C
12%
80%
5.2 m/s
65
4
75
February
21°C
14°C
18°C
12%
56%
4.7 m/s
76
5
77
March
18°C
13°C
15°C
12%
67%
4.4 m/s
52
1
81
April
17°C
12°C
13°C
14%
56%
4.3 m/s
39
0
81
May
14°C
10°C
11°C
18%
65%
4.5 m/s
19
0
73
June
12°C
9°C
8°C
20%
71%
4.7 m/s
3
0
61
July
11°C
8°C
6°C
23%
73%
5.3 m/s
1
0
48
August
12°C
7°C
8°C
20%
74%
4.5 m/s
3
0
60
September
14°C
8°C
9°C
21%
69%
5.3 m/s
15
0
62
October
15°C
10°C
11°C
17%
73%
4.7 m/s
25
0
71
November
17°C
12°C
13°C
18%
69%
5.1 m/s
38
0
74
December
19°C
14°C
16°C
17%
66%
5.2 m/s
61
3
76
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 Whanganui weather by season
Year round, Whanganui has days of about 11°C at their warmest in July, its coolest month, and 21°C in January, its warmest; the coolest hours of the day run from 7°C to 15°C through the year, and the average temperature over the year is 13°C around the clock. Rain is most likely around July and least likely around January. 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.
Whanganui weather in winterJune to August
High 12°CLow 8°CRain 21%
Winter in Whanganui has typical daily highs of about 12°C and lows of about 8°C, with a 21% chance of rain on a given day.
Whanganui weather in springSeptember to November
High 15°CLow 10°CRain 19%
Spring in Whanganui has typical daily highs of about 15°C and lows of about 10°C, with a 19% chance of rain on a given day.
Whanganui weather in summerDecember to February
High 20°CLow 15°CRain 14%
Summer in Whanganui has typical daily highs of about 20°C and lows of about 15°C, with a 14% chance of rain on a given day.
Whanganui weather in autumnMarch to May
High 16°CLow 12°CRain 15%
Autumn in Whanganui has typical daily highs of about 16°C and lows of about 12°C, with a 15% chance of rain on a given day.
When is the rainy season in Whanganui?
Whanganui has no sharply defined rainy season: the chance of rain on a given day runs from 12% in January, the driest month, to 23% in July, the wettest.
What time of year is Whanganui windiest?
Winds in Whanganui are highest in July, averaging 5.3 m/s (19 km/h), and lightest in April, at 4.3 m/s (15 km/h). The prevailing wind is from the W.
What is the average temperature in Whanganui year round?
The average temperature in Whanganui over the whole year is 13°C. January is the hottest month, with highs of about 21°C; August is the coldest, with lows of about 7°C.