Oamaru Weather in September
September in Oamaru brings moderate temperatures around 13°C (55°F) during the day, dropping to 6°C (43°F) at night, with the driest conditions of the year.
Rainfall in Oamaru in September
Dry conditions dominate this month. A good time for outdoor fun and exploration, even if the temperatures are on the cool side. You can typically expect 9 days of rain this month, averaging around 53 mm (2.1 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Oamaru in September
Oamaru in September gets highs of 13°C (55°F) during the day and drops to 6°C (43°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 6°C (43°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.If you prefer enjoying temperate temperatures and rain-free days, January and February 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 Oamaru's climate page.
Oamaru Temperature in September
Min Temperature
6°C (43°F)
Max Temperature
13°C (55°F)
Chance of Rain
30%
Precipitation
53 mm (2.1 in)
Rainy days
9 days
Daily Historical Temperatures
46-year average (1976-2025)
Based on our historical records, temperatures in Oamaru typically stay consistent throughout September, with daily highs averaging around 13°C (55°F). Nights are cold, with lows around 6°C (43°F).
Average temperatures in September
Historical weather for Oamaru in September
Browse day-by-day weather records for Oamaru spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Oamaru historical weather extremes in September
Based on weather observations in Oamaru between 2006 and 2025, these are the recorded extremes during September.
- Oamaru recorded its highest September temperature of 25°C (77°F) on September 20, 2023.
- On September 13, 2024, Oamaru saw its coldest September day with temperatures maxing out at 6°C (43°F).
- Oamaru registered its coldest September night on September 6, 2022, with temperatures dropping to -1°C (30°F).
- The wettest day in September Oamaru was on September 18, 2017 with 28 mm (1.1 in) of precipitation.
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 →
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What to Wear in Oamaru in September
The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Rain is likely on several days, so bring a good rain jacket.What To Do in Oamaru 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 Oamaru's climate page.
See the full Oamaru climate overview or explore weather in New Zealand.
