Christchurch Weather in September
September in Christchurch typically sees daytime highs of 15°C (59°F) and nighttime lows of 5°C (41°F). Expect some rainfall during the month.
Rainfall in Christchurch in September
Records from the past 30 years suggest around 9 days of rain, with 55 mm (2.2 in) average for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Christchurch in September
In September, Christchurch gets moderate temperatures, with highs of 15°C (59°F). Nights cool to around 5°C (41°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With lows around 5°C (41°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Christchurch in September
You can expect a moderate amount of sunlight, with approximately 167 hours. This means a pleasant mix of sun and overcast.
Wind Speed in Christchurch in September
September has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.
Average water temperature in September
With water temperatures around 10°C (50°F), swimming isn't really an option for most visitors. The cold sets in quickly and a wetsuit won't fully solve it.If you prefer dry days with pleasant temperatures, January, February, March and December typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit New Zealand, check out our Christchurch's climate page.
Christchurch Temperature in September
Min Temperature
5°C (41°F)
Max Temperature
15°C (59°F)
Water Temperature
10°C (50°F)
Chance of Rain
30%
Precipitation
55 mm (2.2 in)
Rainy days
9 days
Humidity
79%
Windspeed
3 m/s (6 knots)
Sunshine
167 hours
Percentage Sunshine
48%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Christchurch typically stay consistent throughout September, with daily highs averaging around 15°C (59°F). Nights are cold, with lows around 5°C (41°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Christchurch in September
Browse day-by-day weather records for Christchurch spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Christchurch historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Christchurch.
- Christchurch recorded its highest September temperature of 25°C (77°F) on September 30, 1998.
- The coldest September day was on September 19, 2005, with a maximum of 5°C (41°F).
- Christchurch registered its coldest September night on September 12, 2020, with temperatures dropping to -5°C (23°F).
Best Places in New Zealand in September
Find out more about the weather in New Zealand and which places have the best travel conditions in this month. See all of New Zealand in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Christchurch in September
The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days. The water temperature sits at about 10°C (50°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Christchurch in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit New Zealand, check out our Christchurch's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Christchurch climate overview or explore weather in New Zealand.
