Swimming in Christchurch in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Christchurch in september 2025.
In september, according to seasonal norms, the sea temperature in Christchurch is:
Minimum: 49°F
Average: 51°F
Maximum: 53°F
Other useful seasonal weather averages in september:
- Outside temperature: 43°F to 57°F
- Most common weather: "Clear/Sunny"
- The wind blows at 2.5mph
- It rains a total of 1.6in, over 2 day(s).
Should we swim in Christchurch in september?
No... The water temperature in Christchurch in september is freezing
You won't be able to swim in Christchurch in september! The water temperature is freezing, reaching as low as 49°F (and only 53°F at best)! Our advice: if you are going to Christchurch this month, plan to sightsee and forget the beach!
Note also that in september, the climate is tolerable with an average outside temperature of 50°F, 1.6in of precipitation (over 2 days) and 83.78 % humidity.
Water and normal seasonal temperatures in Christchurch in september
| September | |||
| Average sea temperature | 51°F | ||
| Minimum sea temperature | 49°F | ||
| Maximum sea temperature | 53°F | ||
| Average outside temperature | 50°F | ||
| Maximum outside temperature | 58°F | ||
| Minimum outside temperature | 43°F | ||
| Wind speed | 12.4mph | ||
| Wind temperature | 40°F | ||
| Precipitation | 1.6in | ||
| Number of days of rain | 2 jour(s) (8%) | ||
| Humidity | 84% | ||
| Visibility in kilometers | 9.39km | ||
| Cloud cover | 37% | ||
| Our opinion | freezing swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Christchurch
Swim elsewhere in New Zealand in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Auckland in september | 60°F | 61°F | cold swimming | Dunedin in september | 49°F | 51°F | freezing swimming | Wellington in september | 56°F | 58°F | freezing swimming | Tauranga in september | 60°F | 62°F | cold swimming | Akaroa in september | 51°F | 53°F | freezing swimming | Cathedral Cove in september | 60°F | 62°F | cold swimming | Invercargill in september | 52°F | 54°F | freezing swimming | Napier in september | 57°F | 60°F | freezing swimming | Nelson in september | 56°F | 58°F | freezing swimming | Stewart Island in september | 52°F | 54°F | freezing swimming | Waiheke Island in september | 60°F | 62°F | cold swimming | Blenheim in september | 56°F | 58°F | freezing swimming | Greymouth in september | 55°F | 57°F | freezing swimming | New Plymouth in september | 58°F | 59°F | freezing swimming | Picton in september | 56°F | 58°F | freezing swimming | Timaru in september | 51°F | 53°F | freezing swimming |