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Timaru Weather in September

September in Timaru brings moderate temperatures, with highs of 14°C (57°F) and nights dropping to 5°C (41°F). Expect some rainfall, with around 58 mm (2.3 in) typical for the month.

Rainfall in Timaru in September

The climate data from previous years indicates about 9 days of rain, averaging 58 mm (2.3 in) for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Timaru in September

Temperatures in Timaru in September top out at 14°C (57°F) and drop to 5°C (41°F) overnight. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows around 5°C (41°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Timaru in September

With about 157 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January and February typically offer the best weather for Timaru.

Timaru Temperature in September

Min Temperature

5°C (41°F)

Max Temperature

14°C (57°F)

Chance of Rain

30%

Precipitation

58 mm (2.3 in)

Rainy days

9 days

Humidity

79%

Sunshine

157 hours

Percentage Sunshine

Timaru Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Timaru - and find the best time to visit.

January

20°C (68°F)View January → February

20°C (68°F)View February → March

19°C (66°F)View March → April

17°C (63°F)View April → May

14°C (57°F)View May → June

11°C (52°F)View June → July

11°C (52°F)View July → August

12°C (54°F)View August → This monthSeptember

14°C (57°F)View September → October

16°C (61°F)View October → November

17°C (63°F)View November → December

19°C (66°F)View December →

Best Time to Visit Timaru →

Daily Historical Temperatures

36-year average (1990-2025)

Based on our historical records, temperatures in Timaru typically stay consistent throughout September, with daily highs averaging around 14°C (57°F). Nights are cold, with lows typically ranging from 3°C (37°F) to 5°C (41°F).

Average temperatures in September

Daily Historical Precipitation

36-year average (1990-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

Historical weather records for Timaru in September

Browse day-by-day weather records for Timaru spanning 49 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Timaru historical weather extremes in September

Based on 34 years of weather observations in Timaru between 1991 and 2025, these are the recorded extremes.

On September 20, 2023, temperatures climbed to 27°C (81°F), marking the warmest September day on record.
On September 5, 1997, Timaru saw its coldest September day with temperatures maxing out at 5°C (41°F).
The coldest night in September in Timaru was on September 10, 2019, with a minimum of -4°C (25°F).

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 →

Conditions Temperatures Precipitation

Temperatures Precipitation

perfect weather

pleasant

tolerable

unpleasant

poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Marker color shows the average daytime high temperature in September: blue is cold, red is hot.

Marker color shows total monthly precipitation in September: pale blue is dry, deep blue is wet.

What to Wear in Timaru 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. Sunglasses could come in handy during the sunnier parts of your trip.