Annual mean 9°C · wettest around January · prevailing wind NW
Warmest
28.4 °C
Coldest
-1.3 °C
Wettest
32%
Windiest
3.2 m/s
Prevailing
NW
2.7 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 Nelson over the whole year is 9°C. July is the hottest month, with highs of about 27°C; February is the coldest, with lows of about -3°C. The rainy (wet) season in Nelson runs from October to June, peaking in January with a 29% chance of rain on a given day. The dry season is July to September; July is the driest month, at 9%. Winds in Nelson are highest in February, averaging 2.3 m/s (8 km/h), and lightest in September, at 1.8 m/s (6 km/h). The prevailing wind is from the NW. The clearest skies in Nelson come in July, when the sky is typically 27% covered; December is the cloudiest month, at 61%.
Month by month Nelson 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
-2°C
-4°C
29%
60%
2.0 m/s
0
0
0
February
1°C
-3°C
-3°C
28%
50%
2.3 m/s
0
0
2
March
7°C
-0°C
3°C
22%
44%
2.0 m/s
0
0
24
April
12°C
3°C
8°C
19%
40%
2.2 m/s
12
0
61
May
18°C
9°C
15°C
19%
39%
2.0 m/s
53
5
80
June
22°C
12°C
19°C
19%
36%
2.1 m/s
72
19
66
July
27°C
15°C
25°C
9%
27%
2.0 m/s
63
56
32
August
26°C
14°C
24°C
11%
31%
1.9 m/s
73
51
38
September
20°C
10°C
17°C
13%
37%
1.8 m/s
69
10
79
October
11°C
5°C
8°C
21%
42%
1.8 m/s
14
0
61
November
4°C
1°C
1°C
29%
54%
2.1 m/s
0
0
10
December
-0°C
-2°C
-4°C
28%
61%
2.1 m/s
0
0
1
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 Nelson weather by season
Year round, Nelson has days of about -0°C at their warmest in December, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -3°C to 15°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around January and least likely around July. 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.
Nelson weather in winterDecember to February
High 0°CLow -3°CRain 28%
Winter in Nelson has typical daily highs of about 0°C and lows of about -3°C, with a 28% chance of rain on a given day.
Nelson weather in springMarch to May
High 12°CLow 4°CRain 20%
Spring in Nelson has typical daily highs of about 12°C and lows of about 4°C, with a 20% chance of rain on a given day.
Nelson weather in summerJune to August
High 25°CLow 14°CRain 13%
Summer in Nelson has typical daily highs of about 25°C and lows of about 14°C, with a 13% chance of rain on a given day.
Nelson weather in autumnSeptember to November
High 12°CLow 5°CRain 21%
Autumn in Nelson has typical daily highs of about 12°C and lows of about 5°C, with a 21% chance of rain on a given day.
When is the rainy season in Nelson?
The rainy (wet) season in Nelson runs from October to June, peaking in January with a 29% chance of rain on a given day. The dry season is July to September; July is the driest month, at 9%.
What time of year is Nelson windiest?
Winds in Nelson are highest in February, averaging 2.3 m/s (8 km/h), and lightest in September, at 1.8 m/s (6 km/h). The prevailing wind is from the NW.
What is the average temperature in Nelson year round?
The average temperature in Nelson over the whole year is 9°C. July is the hottest month, with highs of about 27°C; February is the coldest, with lows of about -3°C.