Invercargill weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Poor
Best time to visit: December – February
What is the weather like in Invercargill in September?
In September, Invercargill is cool: daytime highs average 12 °C, and nights cool down to about 5 °C. The sea averages 11.0 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. It rains often – on about 15 days, adding up to 89 mm. All in all, September is not an ideal month for a holiday in Invercargill.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 10 | 10 | 10 |
| Day | 10° | 12° | 13° |
| Night | 4° | 5° | 6° |
| Sea | 11° | 11° | 12° |
| Sun | 4 h | 5 h | 6 h |
| Rain days | 14 | 15 | 18 |
More details for September
- Daylight
- 11 h 42 min06:51 – 18:33
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 28 km/haverage daily peakAll months
- Cloud cover
- 68 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+12Pacific/Auckland
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %32 %
- Few rainy daysweight 20 %20 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Invercargill in September: quick answers
Is Invercargill hot in September?
No. In September, Invercargill is cool: daytime highs average 12 °C and nights drop to about 5 °C.
Can you swim in Invercargill in September?
Only if you don't mind cold water: in September the sea averages just 11.0 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Invercargill in September?
It rains often – on about 15 days, adding up to 89 mm.
Invercargill month by month
The whole year in InvercargillAll destinations: New ZealandWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences