September could be a good time to visit Christchurch, as the weather is generally fine. The average high temperature is around +59°F, and there are typically 5 sunny days in September. However, expect about 14 rainy days, and total monthly rainfall of approximately 47 mm. The weather is changeable so pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+59°F
Avg. max. temperature
+25°F
Min.
+77°F
Max.
47 mm
Total precipitation
75%
Avg. humidity
3 m/s
Avg. wind
5 ☀️
Sunny Days
10 ⛅️
Cloudy
14 🌦
Rainy
Our opinion: Christchurch has OK weather in September.
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Average temperature in Christchurch in September
Here are the expected maximum, average and minimum temperatures in Christchurch for September based on the historical data.
Last Year
Historical Data
The expected average maximum temperature in September is +63°F with a maximum of +72°F and a minimum of +34°F.
The average maximum temperature goes down 14% by the end of the month, compared with the beginning of the month, from +66°F to +61°F.
Is Christchurch warm or cold in September?
Christchurch is typically mild in September.
Maximum temperatures go up compared to the previous month from +54°F to +59°F. The minimum temperature also goes up from +41°F to +43°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Christchurch:
Water temperature in Christchurch in September
Water in Christchurch in September is Cold. It varies from +49°F to +52°F, with an average of +51°F.This is almost similar to the air temperature, which averages +59°F.
The water temperature in September is one of the coldest of the entire year:
The warmest water temperatures in Christchurch are reached in February, when the average sea temperature rises to +61°F. The coldest water temperatures are in August, with an average of +49°F.
Can you swim in Christchurch in September?
We would not recommend swimming in Christchurch in September, the water is very cold (+51°F on average). Consider swimming only if you are an experienced cold-water swimmer with proper gear.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
You will need a full-body wetsuit, cap, gloves, a warm change of clothes, and a hot drink ready for after your swim.
Climate in Christchurch in September
Christchurch weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+54°F
+59°F
+63°F
Min. temperature
+23°F
+25°F
+27°F
Max. temperature
+72°F
+77°F
+82°F
Rainfall
56 mm
47 mm
56 mm
Wind
3 m/s
3 m/s
3 m/s
Avg. water temperature
+49°F
+51°F
+52°F
Humidity
79%
75%
72%
Air pressure
1011 HPa
1010 HPa
1009 HPa
Sunny days
5
5
4
Cloudy days
10
10
11
Rainy days
15
14
16
Snowy days
0
0
0
September weather is still as ok as in August.It’s getting warmer as September arrives. The average maximum temperature goes up from +54°F to +59°F during the day.As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 56 mm to 47 mm.It feels drier, as humidity decreases from 79% to 75%.The average wind speed doesn’t change much during September, staying around 3 m/s.The amount of sunny days stay about the same, averaging 5 sunny days during the month.
But maybe it is worth considering traveling in October as the weather gets better.
Wind speed in Christchurch in September based on historical data.
Last Year
Historical Data
The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Christchurch is gradually increasing during September, going from 2 m/s to 3 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Christchurch based on historical data.
Last Year
Historical Data
Total precipitation in September is about 84 mm, with a 33% chance of rain on a typical day. The maximum amount of rainfall per day is around 22 mm, which is considered light rain.September is a pretty wet month with over 10 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Christchurch wettest month is July, where a typical day has a 48% chance of precipitation and 61 mm of rainfall per day. February, on the other hand, is the driest month with a mere 38% chance of precipitation and 42 mm of rainfall per day.
How was the weather last September in Christchurch?
This is the weather in Christchurch in September 2023:
1 September
☁️
+65°F
2 September
☁️
+60°F
3 September
☁️
+56°F
4 September
☁️
+57°F
5 September
☁️
+64°F
6 September
☁️
+66°F
7 September
☀️
+68°F
8 September
☁️
+61°F
9 September
☀️
+64°F
10 September
☁️
+67°F
11 September
🌧️
+65°F
12 September
☀️
+61°F
13 September
☀️
+61°F
14 September
☁️
+65°F
15 September
☀️
+58°F
16 September
☁️
+70°F
17 September
☀️
+72°F
18 September
☀️
+66°F
19 September
☁️
+70°F
20 September
☁️
+72°F
21 September
☁️
+71°F
22 September
🌧️
+53°F
23 September
☁️
+52°F
24 September
☁️
+52°F
25 September
☁️
+52°F
26 September
☁️
+56°F
27 September
🌧️
+56°F
28 September
☁️
+58°F
29 September
🌧️
+65°F
30 September
☀️
+61°F
In September 2023 Christchurch had 8 sunny days, 18 cloudy days, and 4 rainy days. The average maximum temperature was +63°F, with an absolute maximum of +72°F and a minimum of +52°F. The average humidity was 75%, with a maximum of 100% and a minimum of 46%. The average wind speed was 4 m/s, with a maximum of 14 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change Over the Years
This is how Christchurch climate has changed over the last 43 years.
The climate in Christchurch in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1992 (+59°F) and the highest in 2019 (+65°F). The driest year was 1988 with only 348 mm of rainfall, and the wettest year was 2021 with 963 mm.
FAQ
Frequently asked questions about the weather in Christchurch in September:
Is September a good time to visit Christchurch?
It’s always a good time to visit Christchurch, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Christchurch in September?
September has mild temperatures in Christchurch. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Can you swim in Christchurch in September?
Swimming in Christchurch in September is challenging and not recommended for inexperienced swimmers or without proper equipment and preparation.
Is Christchurch rainy in September?
Christchurch is usually dry in September. Plan your packing around outdoor activities and exploring.
Is it sunny in Christchurch in September?
Usually, it’s not very sunny in Christchurch in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
Other cities in New Zealand
Check out the weather for other cities in New Zealand.
For this page, we’ve looked at the typical weather in Christchurch, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
