worldweather15°Cexceptionally warm
usually 9°C–13°C
warmer than 98% of similar days
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
Weather in Nelson - 14-day forecast
Detailed weather forecast for Nelson, New Zealand: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Nelson
today☁️
15°💧 0.7 mm
Sun🌧️
14°💧 12.9 mm
Mon🌧️
8°💧 30 mm
Tue☁️
11°💧 0.3 mm
Wed🌤️
12°💧 2.9 mm
Thu🌧️
12°💧 0.4 mm
Fri☁️
10°💧 1 mm
Sat☀️
14°💧 1.1 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Saturday 5 Sept in Nelson, the forecast high is 15°C. Typical daytime temperatures at this time of year range from 9°C to 13°C, so it will be exceptionally warm. It is warmer than 98% of similar days.
14°Cexceptionally warm
usually 9°C–13°C
warmer than 91% of similar days
night: exceptionally warm
rain: exceptionally wet
wind: stronger than usual
8°Cexceptionally cool
usually 9°C–13°C
cooler than 91% of similar days
night: warmer than usual
rain: exceptionally wet
wind: exceptionally strong
11°Cnear normal
usually 9°C–13°C
night: exceptionally warm
rain: typical rainfall
wind: lighter than usual
12°Cwarmer than usual
usually 9°C–13°C
warmer than 72% of similar days
night: exceptionally warm
rain: more rain than usual
wind: typical
12°Cnear normal
usually 10°C–13°C
night: warmer than usual
rain: typical rainfall
wind: stronger than usual
10°Cnear normal
usually 10°C–13°C
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 11°C by day. The coolest year was 1997 (8°C) and the warmest was 2005 (14°C). The current forecast averages 12°C - higher than in 73% of historical years.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
14-day forecast - Nelson
Day-by-day forecast for Nelson
Saturday5 September 2026
☁️15°overcast clouds
Sunday6 September 2026
🌧️14°moderate rain
Monday7 September 2026
🌧️8°heavy rain
Tuesday8 September 2026
☁️11°broken clouds
Wednesday9 September 2026
🌤️12°scattered clouds
Thursday10 September 2026
🌧️12°light rain
Friday11 September 2026
☁️10°broken clouds
Saturday12 September 2026
☀️14°clear sky
Sunday13 September 2026
☁️14°overcast clouds
Monday14 September 2026
🌧️10°light rain
Tuesday15 September 2026
☀️18°clear sky
Wednesday16 September 2026
🌧️16°light rain
Thursday17 September 2026
🌧️17°light rain
Friday18 September 2026
🌧️13°light rain
Saturday19 September 2026
🌧️14°light rain
Sunday20 September 2026
🌧️16°moderate rain
UV index in Nelson - is it safe to sunbathe?
Today the UV index in Nelson is 2 (low). You can safely stay outside. Sunscreen only matters for very long exposure.
Sea temperature - Nelson
Water today
13°C
Week avg
13°C
Waves today
0.8 m
How's the water?
very cold
16-day sea temperature forecast:
Average sea temperature through the year:
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.
Upcoming public holidays in New Zealand: Labour Day — 26 October · Christmas Day — 25 December · Boxing Day — 28 December.
Nearby and related places
FAQ - Nelson weather
What is the weather like in Nelson today?
Today it is about 15° during the day and 12° at night, overcast clouds.
How far ahead can I check the forecast for Nelson?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.