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New Zealand weather

Weather in Christchurch City for September 2025

Your guide to Christchurch City weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Wind Warning - See hour by hour.

    • Temperatures

  • Until now, September 2025 in Christchurch City is slightly cooler than the historical average by -1.7 °C.

  • The forecast for the upcoming days in Christchurch City predicts a temperature of 15.1 °C, which is slightly above the historical average.

  • In general, the average temperature in Christchurch City at the beginning of September is 14.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 14 °C by the end of September.

    • Rain 🌧️

  • Christchurch City experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 167.7 mm.

Average dry days
22
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/2°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Christchurch City Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
16°
2
Overcast
15°
3
Sunny
14°
4
Sunny
14°
5
Overcast
13°
6
Sunny
14°
7
Patchy rain possible
16°
8
Sunny
11°
9
Partly cloudy
15°
10
Heavy rain at times
15°
11
Patchy rain possible
13°
12
Overcast
14°
13
Moderate or heavy rain shower
13°
14
Patchy rain possible
11°
15
Sunny
13°
16
Weather Alert Sunny
13°
17
Weather Alert Partly cloudy
20°
18
Patchy rain possible
16°
19
Patchy rain possible
10°
20
Sunny
15°
21
Sunny
18°
22
Sunny
16°
23
Partly cloudy
16°
24
Partly cloudy
14°
25
Sunny
15°
26
Sunny
14°
27
Patchy rain possible
15°
28
Partly cloudy
12°
29
Patchy rain possible
17°
30
Patchy rain possible
11°

Temperatures trend during September in Christchurch City

See the weather trend as well as the moving average line

September weather in Christchurch City day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 16° /4° 0 mm 5
2 Sept. Overcast
Overcast
 15° /5° 0.6 mm 4
3 Sept. Sunny
Sunny
 14° /5° 0.3 mm 5
4 Sept. Sunny
Sunny
 14° /5° 0.4 mm 5
5 Sept. Overcast
Overcast
 13° /4° 0.7 mm 4
6 Sept. Sunny
Sunny
 14° /4° 0.7 mm 4
7 Sept. Patchy rain possible
Patchy rain possible
 16° /5° 0.4 mm 5
8 Sept. Sunny
Sunny
 11° /3° 1.8 mm 4
9 Sept. Partly cloudy
Partly cloudy
 15° /3° 0 mm 5
10 Sept. Heavy rain at times
Heavy rain at times
 15° /5° 5.5 mm 5
11 Sept. Patchy rain possible
Patchy rain possible
 13° /3° 1.1 mm 4
12 Sept. Overcast
Overcast
 14° /3° 0 mm 4
13 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 13° /4° 4.2 mm 4
14 Sept. Patchy rain possible
Patchy rain possible
 11° /3° 2.4 mm 4
15 Sept. Sunny
Sunny
 13° /3° 0 mm 5
16 Sept. Sunny
Sunny
 13° /8° 0 mm 0.9
17 Sept. Partly cloudy
Partly cloudy
 20° /10° 0 mm 0.8
18 Sept. Patchy rain possible
Patchy rain possible
 16° /6° 4.6 mm 0.9
19 Sept. Patchy rain possible
Patchy rain possible
 10° /3° 0.1 mm 0.9
20 Sept. Sunny
Sunny
 15° /5° 0 mm 0.9
21 Sept. Sunny
Sunny
 18° /9° 0 mm 0
22 Sept. Sunny
Sunny
 16° /7° 0 mm 5
23 Sept. Partly cloudy
Partly cloudy
 16° /8° 0.1 mm 5
24 Sept. Partly cloudy
Partly cloudy
 14° /5° 0 mm 4
25 Sept. Sunny
Sunny
 15° /7° 0.1 mm 5
26 Sept. Sunny
Sunny
 14° /3° 0 mm 4
27 Sept. Patchy rain possible
Patchy rain possible
 15° /6° 2.3 mm 4
28 Sept. Partly cloudy
Partly cloudy
 12° /4° 0 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 17° /7° 0.2 mm 4
30 Sept. Patchy rain possible
Patchy rain possible
 11° /4° 3.4 mm 4
Next
Important Notice
Our weather forecast for Christchurch City in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Christchurch City forecast closer to your planned date for the most up-to-date weather information.
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Christchurch City in September - FAQ

What are the expected maximum and minimum temperatures in Christchurch City during September?
During September, expect a variety of temperatures with highs around 17° and lows near 2°, suitable for diverse activities and preferences.
How much rainfall should be expected in Christchurch City during September?
Significant rainfall exceeding 167.7 mm is expected in Christchurch City during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Christchurch City in September 2025?
Christchurch City typically sees 0.9 cm of snowfall during September.
What are the typical wind conditions in Christchurch City during September?
The average wind speed in Christchurch City during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Christchurch City

Explore the daily rainfall trends and prepare for Christchurch Citys September weather 💧
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Location coordinates Where is Christchurch City?

Get accurate weather forecasts for Christchurch City, located at latitude -43.533 and longitude 172.633. Stay updated with localized weather information tailored for Christchurch City.

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