Annual mean 12°C · wettest around July · prevailing wind NW
Warmest
20.0 °C
Coldest
10.8 °C
Wettest
43%
Windiest
5.4 m/s
Prevailing
NW
4.5 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 Greymouth over the whole year is 12°C. February is the hottest month, with highs of about 20°C; July is the coldest, with lows of about 6°C. Greymouth has no sharply defined rainy season: the chance of rain on a given day runs from 19% in February, the driest month, to 32% in July, the wettest. Winds in Greymouth are highest in September, averaging 4.0 m/s (14 km/h), and lightest in June, at 3.1 m/s (11 km/h). The prevailing wind is from the NW. The clearest skies in Greymouth come in August, when the sky is typically 38% covered; December is the cloudiest month, at 52%.
Month by month Greymouth 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
19°C
15°C
17°C
21%
48%
3.8 m/s
68
4
75
February
20°C
14°C
17°C
19%
44%
3.7 m/s
73
3
78
March
18°C
13°C
16°C
22%
47%
3.3 m/s
68
1
80
April
16°C
11°C
14°C
26%
42%
3.2 m/s
42
0
79
May
14°C
9°C
11°C
30%
40%
3.3 m/s
19
0
71
June
12°C
7°C
9°C
27%
48%
3.1 m/s
4
0
64
July
11°C
6°C
8°C
32%
42%
3.3 m/s
1
0
55
August
12°C
6°C
8°C
30%
38%
3.3 m/s
2
0
60
September
13°C
8°C
9°C
31%
39%
4.0 m/s
5
0
63
October
14°C
10°C
10°C
30%
42%
3.9 m/s
12
0
68
November
16°C
12°C
13°C
27%
46%
4.0 m/s
35
0
77
December
18°C
14°C
15°C
25%
52%
3.9 m/s
55
1
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 Greymouth weather by season
Year round, Greymouth has days of about 11°C at their warmest in July, its coolest month, and 20°C in February, its warmest; the coolest hours of the day run from 6°C to 15°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around July 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.
Greymouth weather in winterJune to August
High 12°CLow 6°CRain 30%
Winter in Greymouth has typical daily highs of about 12°C and lows of about 6°C, with a 30% chance of rain on a given day.
Greymouth weather in springSeptember to November
High 14°CLow 10°CRain 29%
Spring in Greymouth has typical daily highs of about 14°C and lows of about 10°C, with a 29% chance of rain on a given day.
Greymouth weather in summerDecember to February
High 19°CLow 14°CRain 22%
Summer in Greymouth has typical daily highs of about 19°C and lows of about 14°C, with a 22% chance of rain on a given day.
Greymouth weather in autumnMarch to May
High 16°CLow 11°CRain 26%
Autumn in Greymouth has typical daily highs of about 16°C and lows of about 11°C, with a 26% chance of rain on a given day.
When is the rainy season in Greymouth?
Greymouth has no sharply defined rainy season: the chance of rain on a given day runs from 19% in February, the driest month, to 32% in July, the wettest.
What time of year is Greymouth windiest?
Winds in Greymouth are highest in September, averaging 4.0 m/s (14 km/h), and lightest in June, at 3.1 m/s (11 km/h). The prevailing wind is from the NW.
What is the average temperature in Greymouth year round?
The average temperature in Greymouth over the whole year is 12°C. February is the hottest month, with highs of about 20°C; July is the coldest, with lows of about 6°C.