Nelson weather by month

Check out Nelson weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Nelson (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
22°C maximum daytime temperature in January in Nelson22
22°C maximum daytime temperature in February in Nelson22
21°C maximum daytime temperature in March in Nelson21
18°C maximum daytime temperature in April in Nelson18
15°C maximum daytime temperature in May in Nelson15
12°C maximum daytime temperature in June in Nelson12
12°C maximum daytime temperature in July in Nelson12
12°C maximum daytime temperature in August in Nelson12
14°C maximum daytime temperature in September in Nelson14
16°C maximum daytime temperature in October in Nelson16
18°C maximum daytime temperature in November in Nelson18
20°C maximum daytime temperature in December in Nelson20
Min temperature (night-time)
12°C minimum night-time temperature in January in Nelson12
12°C minimum night-time temperature in February in Nelson12
11°C minimum night-time temperature in March in Nelson11
8°C minimum night-time temperature in April in Nelson8
5°C minimum night-time temperature in May in Nelson5
2°C minimum night-time temperature in June in Nelson2
1°C minimum night-time temperature in July in Nelson1
3°C minimum night-time temperature in August in Nelson3
5°C minimum night-time temperature in September in Nelson5
7°C minimum night-time temperature in October in Nelson7
9°C minimum night-time temperature in November in Nelson9
11°C minimum night-time temperature in December in Nelson11
Heat & Humidity
No heat & humidity in January in Nelson0
No heat & humidity in February in Nelson0
No heat & humidity in March in Nelson0
No heat & humidity in April in Nelson0
No heat & humidity in May in Nelson0
No heat & humidity in June in Nelson0
No heat & humidity in July in Nelson0
No heat & humidity in August in Nelson0
No heat & humidity in September in Nelson0
No heat & humidity in October in Nelson0
No heat & humidity in November in Nelson0
No heat & humidity in December in Nelson0
Sea temperature
18°C sea temperature in January in Nelson18
19°C sea temperature in February in Nelson19
18°C sea temperature in March in Nelson18
17°C sea temperature in April in Nelson17
15°C sea temperature in May in Nelson15
13°C sea temperature in June in Nelson13
12°C sea temperature in July in Nelson12
11°C sea temperature in August in Nelson11
12°C sea temperature in September in Nelson12
14°C sea temperature in October in Nelson14
16°C sea temperature in November in Nelson16
17°C sea temperature in December in Nelson17

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Nelson

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
15 hours of daylight per day in January in Nelson15
14 hours of daylight per day in February in Nelson14
12 hours of daylight per day in March in Nelson12
11 hours of daylight per day in April in Nelson11
10 hours of daylight per day in May in Nelson10
9 hours of daylight per day in June in Nelson9
10 hours of daylight per day in July in Nelson10
11 hours of daylight per day in August in Nelson11
12 hours of daylight per day in September in Nelson12
13 hours of daylight per day in October in Nelson13
14 hours of daylight per day in November in Nelson14
15 hours of daylight per day in December in Nelson15
UV Index (Maximum)
UV (maximum) index 11 (Extreme) in January in Nelson11
UV (maximum) index 10 (Very High) in February in Nelson10
UV (maximum) index 7 (High) in March in Nelson7
UV (maximum) index 4 (Moderate) in April in Nelson4
UV (maximum) index 2 (Low) in May in Nelson2
UV (maximum) index 1 (Low) in June in Nelson1
UV (maximum) index 1 (Low) in July in Nelson1
UV (maximum) index 2 (Low) in August in Nelson2
UV (maximum) index 4 (Moderate) in September in Nelson4
UV (maximum) index 6 (High) in October in Nelson6
UV (maximum) index 8 (Very High) in November in Nelson8
UV (maximum) index 10 (Very High) in December in Nelson10

Rainfall in Nelson

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
9 days with some rainfall in January in Nelson9
8 days with some rainfall in February in Nelson8
10 days with some rainfall in March in Nelson10
9 days with some rainfall in April in Nelson9
10 days with some rainfall in May in Nelson10
10 days with some rainfall in June in Nelson10
11 days with some rainfall in July in Nelson11
12 days with some rainfall in August in Nelson12
13 days with some rainfall in September in Nelson13
12 days with some rainfall in October in Nelson12
12 days with some rainfall in November in Nelson12
11 days with some rainfall in December in Nelson11
Average monthly rainfall (mm)
97 mm monthly rainfall in January in Nelson97
77 mm monthly rainfall in February in Nelson77
108 mm monthly rainfall in March in Nelson108
125 mm monthly rainfall in April in Nelson125
128 mm monthly rainfall in May in Nelson128
110 mm monthly rainfall in June in Nelson110
121 mm monthly rainfall in July in Nelson121
133 mm monthly rainfall in August in Nelson133
110 mm monthly rainfall in September in Nelson110
127 mm monthly rainfall in October in Nelson127
119 mm monthly rainfall in November in Nelson119
104 mm monthly rainfall in December in Nelson104

More about Nelson

Nelson by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for New Zealand

  • Save up to 15% on 5+ day car hire with Spaceship Rentals
  • Book in advance for pick-ups across New Zealand
  • Travel between 1st Sep 2026 & 1st Feb 2028 (inclusive)

Expires at 23:59 on Sunday 31st May 2026

The climate guide for New Zealand (Nelson) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Nelson?

Nelson has a temperate climate with warm summers and some rainfall in all months.

Nelson weather in January

Expect daytime maximum temperatures of 22°C in Nelson, New Zealand in January based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 97 mm of rainfall in the month.

  • 22°C maximum daytime temperature in January in Nelson22
    22°C max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in January in Nelson9
    9 days with some rainfall
  • 12°C minimum night-time temperature in January in Nelson12
    12°C min night temperature
  • 15 hours of daylight per day in January in Nelson15
    15 hours of daylight per day
  • No heat & humidity in January in Nelson0
    No heat & humidity
  • 97 mm monthly rainfall in January in Nelson97
    97 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in January in Nelson11
    11 (Extreme) UV index
  • 18°C sea temperature in January in Nelson18
    18°C sea temperature

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Nelson weather in February

Expect daytime maximum temperatures of 22°C in Nelson, New Zealand in February based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 77 mm of rainfall in the month.

  • 22°C maximum daytime temperature in February in Nelson22
    22°C max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in February in Nelson8
    8 days with some rainfall
  • 12°C minimum night-time temperature in February in Nelson12
    12°C min night temperature
  • 14 hours of daylight per day in February in Nelson14
    14 hours of daylight per day
  • No heat & humidity in February in Nelson0
    No heat & humidity
  • 77 mm monthly rainfall in February in Nelson77
    77 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in February in Nelson10
    10 (Very High) UV index
  • 19°C sea temperature in February in Nelson19
    19°C sea temperature

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Nelson weather in March

Expect daytime maximum temperatures of 21°C in Nelson, New Zealand in March based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 108 mm of rainfall in the month.

  • 21°C maximum daytime temperature in March in Nelson21
    21°C max day temperature
  • 6 hours of sunshine per day
  • 10 days with some rainfall in March in Nelson10
    10 days with some rainfall
  • 11°C minimum night-time temperature in March in Nelson11
    11°C min night temperature
  • 12 hours of daylight per day in March in Nelson12
    12 hours of daylight per day
  • No heat & humidity in March in Nelson0
    No heat & humidity
  • 108 mm monthly rainfall in March in Nelson108
    108 mm of monthly rainfall
  • UV (maximum) index 7 (High) in March in Nelson7
    7 (High) UV index
  • 18°C sea temperature in March in Nelson18
    18°C sea temperature

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Nelson weather in April

Expect daytime maximum temperatures of 18°C in Nelson, New Zealand in April based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 125 mm of rainfall in the month.

  • 18°C maximum daytime temperature in April in Nelson18
    18°C max day temperature
  • 6 hours of sunshine per day
  • 9 days with some rainfall in April in Nelson9
    9 days with some rainfall
  • 8°C minimum night-time temperature in April in Nelson8
    8°C min night temperature
  • 11 hours of daylight per day in April in Nelson11
    11 hours of daylight per day
  • No heat & humidity in April in Nelson0
    No heat & humidity
  • 125 mm monthly rainfall in April in Nelson125
    125 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in April in Nelson4
    4 (Moderate) UV index
  • 17°C sea temperature in April in Nelson17
    17°C sea temperature

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Nelson weather in May

Expect daytime maximum temperatures of 15°C in Nelson, New Zealand in May based on long-term weather averages. There are 5 hours of sunshine per day on average with 10 days with some rainfall and typically 128 mm of rainfall in the month.

  • 15°C maximum daytime temperature in May in Nelson15
    15°C max day temperature
  • 5 hours of sunshine per day
  • 10 days with some rainfall in May in Nelson10
    10 days with some rainfall
  • 5°C minimum night-time temperature in May in Nelson5
    5°C min night temperature
  • 10 hours of daylight per day in May in Nelson10
    10 hours of daylight per day
  • No heat & humidity in May in Nelson0
    No heat & humidity
  • 128 mm monthly rainfall in May in Nelson128
    128 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in May in Nelson2
    2 (Low) UV index
  • 15°C sea temperature in May in Nelson15
    15°C sea temperature

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Nelson weather in June

Expect daytime maximum temperatures of 12°C in Nelson, New Zealand in June based on long-term weather averages. There are 5 hours of sunshine per day on average with 10 days with some rainfall and typically 110 mm of rainfall in the month.

  • 12°C maximum daytime temperature in June in Nelson12
    12°C max day temperature
  • 5 hours of sunshine per day
  • 10 days with some rainfall in June in Nelson10
    10 days with some rainfall
  • 2°C minimum night-time temperature in June in Nelson2
    2°C min night temperature
  • 9 hours of daylight per day in June in Nelson9
    9 hours of daylight per day
  • No heat & humidity in June in Nelson0
    No heat & humidity
  • 110 mm monthly rainfall in June in Nelson110
    110 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in June in Nelson1
    1 (Low) UV index
  • 13°C sea temperature in June in Nelson13
    13°C sea temperature

Back to months

Nelson weather in July

Expect daytime maximum temperatures of 12°C in Nelson, New Zealand in July based on long-term weather averages. There are 5 hours of sunshine per day on average with 11 days with some rainfall and typically 121 mm of rainfall in the month.

  • 12°C maximum daytime temperature in July in Nelson12
    12°C max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in July in Nelson11
    11 days with some rainfall
  • 1°C minimum night-time temperature in July in Nelson1
    1°C min night temperature
  • 10 hours of daylight per day in July in Nelson10
    10 hours of daylight per day
  • No heat & humidity in July in Nelson0
    No heat & humidity
  • 121 mm monthly rainfall in July in Nelson121
    121 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in July in Nelson1
    1 (Low) UV index
  • 12°C sea temperature in July in Nelson12
    12°C sea temperature

Back to months

Nelson weather in August

Expect daytime maximum temperatures of 12°C in Nelson, New Zealand in August based on long-term weather averages. There are 5 hours of sunshine per day on average with 12 days with some rainfall and typically 133 mm of rainfall in the month.

  • 12°C maximum daytime temperature in August in Nelson12
    12°C max day temperature
  • 5 hours of sunshine per day
  • 12 days with some rainfall in August in Nelson12
    12 days with some rainfall
  • 3°C minimum night-time temperature in August in Nelson3
    3°C min night temperature
  • 11 hours of daylight per day in August in Nelson11
    11 hours of daylight per day
  • No heat & humidity in August in Nelson0
    No heat & humidity
  • 133 mm monthly rainfall in August in Nelson133
    133 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in August in Nelson2
    2 (Low) UV index
  • 11°C sea temperature in August in Nelson11
    11°C sea temperature

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Nelson weather in September

Expect daytime maximum temperatures of 14°C in Nelson, New Zealand in September based on long-term weather averages. There are 6 hours of sunshine per day on average with 13 days with some rainfall and typically 110 mm of rainfall in the month.

  • 14°C maximum daytime temperature in September in Nelson14
    14°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in September in Nelson13
    13 days with some rainfall
  • 5°C minimum night-time temperature in September in Nelson5
    5°C min night temperature
  • 12 hours of daylight per day in September in Nelson12
    12 hours of daylight per day
  • No heat & humidity in September in Nelson0
    No heat & humidity
  • 110 mm monthly rainfall in September in Nelson110
    110 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Nelson4
    4 (Moderate) UV index
  • 12°C sea temperature in September in Nelson12
    12°C sea temperature

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Nelson weather in October

Expect daytime maximum temperatures of 16°C in Nelson, New Zealand in October based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 127 mm of rainfall in the month.

  • 16°C maximum daytime temperature in October in Nelson16
    16°C max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in October in Nelson12
    12 days with some rainfall
  • 7°C minimum night-time temperature in October in Nelson7
    7°C min night temperature
  • 13 hours of daylight per day in October in Nelson13
    13 hours of daylight per day
  • No heat & humidity in October in Nelson0
    No heat & humidity
  • 127 mm monthly rainfall in October in Nelson127
    127 mm of monthly rainfall
  • UV (maximum) index 6 (High) in October in Nelson6
    6 (High) UV index
  • 14°C sea temperature in October in Nelson14
    14°C sea temperature

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Nelson weather in November

Expect daytime maximum temperatures of 18°C in Nelson, New Zealand in November based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 119 mm of rainfall in the month.

  • 18°C maximum daytime temperature in November in Nelson18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in November in Nelson12
    12 days with some rainfall
  • 9°C minimum night-time temperature in November in Nelson9
    9°C min night temperature
  • 14 hours of daylight per day in November in Nelson14
    14 hours of daylight per day
  • No heat & humidity in November in Nelson0
    No heat & humidity
  • 119 mm monthly rainfall in November in Nelson119
    119 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in November in Nelson8
    8 (Very High) UV index
  • 16°C sea temperature in November in Nelson16
    16°C sea temperature

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Nelson weather in December

Expect daytime maximum temperatures of 20°C in Nelson, New Zealand in December based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 104 mm of rainfall in the month.

  • 20°C maximum daytime temperature in December in Nelson20
    20°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in December in Nelson11
    11 days with some rainfall
  • 11°C minimum night-time temperature in December in Nelson11
    11°C min night temperature
  • 15 hours of daylight per day in December in Nelson15
    15 hours of daylight per day
  • No heat & humidity in December in Nelson0
    No heat & humidity
  • 104 mm monthly rainfall in December in Nelson104
    104 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in December in Nelson10
    10 (Very High) UV index
  • 17°C sea temperature in December in Nelson17
    17°C sea temperature

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More about Nelson

Nelson by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for New Zealand

  • Save up to 15% on 5+ day car hire with Spaceship Rentals
  • Book in advance for pick-ups across New Zealand
  • Travel between 1st Sep 2026 & 1st Feb 2028 (inclusive)

Expires at 23:59 on Sunday 31st May 2026

The climate guide for New Zealand (Nelson) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Compare Nelson weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Nelson, New Zealand and the UK (London).

Maximum daytime temperature (°C)

Nelson, New Zealand
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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