worldweather18°Cexceptionally warm
usually 10°C–16°C
warmer than 95% of similar days
night: exceptionally warm
rain: exceptionally wet
wind: stronger than usual
Weather in Christchurch - 14-day forecast
Detailed weather forecast for Christchurch, New Zealand: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Christchurch
today☁️
18°💧 8.6 mm
Sun🌧️
10°💧 11.1 mm
Mon🌧️
8°💧 2.3 mm
Tue☁️
9°💧 3.1 mm
Wed☀️
11°💧 0.1 mm
Thu🌧️
11°💧 4.8 mm
Fri🌧️
14°💧 10.2 mm
Sat🌧️
10°💧 0.2 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 Christchurch, the forecast high is 18°C. Typical daytime temperatures at this time of year range from 10°C to 16°C, so it will be exceptionally warm. It is warmer than 95% of similar days.
10°Ccooler than usual
usually 10°C–16°C
cooler than 80% of similar days
night: exceptionally warm
rain: exceptionally wet
wind: lighter than usual
8°Cexceptionally cool
usually 11°C–16°C
cooler than 93% of similar days
night: warmer than usual
rain: more rain than usual
wind: lighter than usual
9°Ccooler than usual
usually 11°C–16°C
cooler than 87% of similar days
night: exceptionally warm
rain: more rain than usual
wind: exceptionally light
11°Ccooler than usual
usually 11°C–16°C
cooler than 77% of similar days
night: exceptionally warm
rain: typical rainfall
wind: lighter than usual
11°Ccooler than usual
usually 11°C–16°C
cooler than 77% of similar days
night: warmer than usual
rain: more rain than usual
wind: stronger than usual
14°Cnear normal
usually 11°C–16°C
night: warmer than usual
rain: exceptionally wet
wind: typical
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 13°C by day. The coolest year was 1992 (9°C) and the warmest was 2002 (17°C). The current forecast averages 12°C - lower 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Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window.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 - Christchurch
Christchurch 30 & 45-day weather - long-range outlook
Next 16 days · forecast
12°
around 9° at night · days with rain: 10
Weeks 3-4 · avg for September
14°
around 4° at night · rain chance 43%
Weeks 5-7 · avg for October
17°
around 6° at night · rain chance 47%
The 30 & 45-day outlook for Christchurch: the next 16 days are a numerical forecast updated daily - on average 12° by day and 9° at night. Further out we rely on multi-year climate averages: around 14° in September, and about 17° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Christchurch
Saturday5 September 2026
☁️18°broken clouds
Sunday6 September 2026
🌧️10°moderate rain
Monday7 September 2026
🌧️8°light rain
Tuesday8 September 2026
☁️9°overcast clouds
Wednesday9 September 2026
☀️11°clear sky
Thursday10 September 2026
🌧️11°moderate rain
Friday11 September 2026
🌧️14°moderate rain
Saturday12 September 2026
🌧️10°light rain
Sunday13 September 2026
🌧️13°light rain
Monday14 September 2026
☁️10°broken clouds
Tuesday15 September 2026
🌤️14°scattered clouds
Wednesday16 September 2026
🌧️15°light rain
Thursday17 September 2026
☀️16°clear sky
Friday18 September 2026
☁️16°broken clouds
Saturday19 September 2026
🌧️10°light rain
Sunday20 September 2026
🌧️10°light rain
UV index in Christchurch - is it safe to sunbathe?
Today the UV index in Christchurch is 4 (moderate) - unprotected fair skin can burn in about 55 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
Sea temperature - Christchurch
Water today
11°C
Week avg
11°C
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.
Air quality and smog in Christchurch
Air quality in Christchurch is currently very good. Fine particulate PM2.5: 0.5 µg/m³, PM10: 0.6 µg/m³.
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| Christchurch | 0.5 | 0.6 | very good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-05, 13:00).
Christchurch weather through the year
Warmest, driest months on average: January, February, March, April.
Upcoming public holidays in New Zealand: Labour Day — 26 October · Christmas Day — 25 December · Boxing Day — 28 December.
Nearby and related places
FAQ - Christchurch weather
What is the weather like in Christchurch today?
Today it is about 18° during the day and 12° at night, broken clouds.
How far ahead can I check the forecast for Christchurch?
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.