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Oamaru Weather in August

In Oamaru, August brings low daytime temperatures around 11°C (52°F), with nights cooling to 5°C (41°F). Some rainfall is to be expected.

Rainfall in Oamaru in August

Historically, the month has about 9 days of rain, averaging 54 mm (2.1 in) in total. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Oamaru in August

If you're visiting Oamaru in August, expect highs of 11°C (52°F) and overnight lows around 5°C (41°F). Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. At 5°C (41°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

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.

Oamaru Temperature in August

Min Temperature

5°C (41°F)

Max Temperature

11°C (52°F)

Chance of Rain

31%

Precipitation

54 mm (2.1 in)

Rainy days

9 days

Oamaru Weather by Month

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

January

18°C (64°F)View January → February

18°C (64°F)View February → March

17°C (63°F)View March → April

15°C (59°F)View April → May

13°C (55°F)View May → June

11°C (52°F)View June → July

10°C (50°F)View July → August

11°C (52°F)View August → September

13°C (55°F)View September → This monthOctober

14°C (57°F)View October → November

15°C (59°F)View November → December

17°C (63°F)View December →

Best Time to Visit Oamaru →

Daily Historical Temperatures

47-year average (1976-2025)

Based on our historical records, temperatures in Oamaru typically stay consistent throughout August, with daily highs averaging around 11°C (52°F). Nights are cold, with lows around 5°C (41°F).

Average temperatures in August

Historical weather records for Oamaru in August

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 August

Based on weather observations in Oamaru between 2006 and 2026, these are the recorded extremes during August.

The hottest August day on record in Oamaru reached 21°C (70°F) (August 24, 2021).
On August 7, 2016, Oamaru saw its coldest August day with temperatures maxing out at 3°C (37°F).
Nighttime temperatures dropped to -3°C (27°F) on August 15, 2020, marking the coldest August night on record.
The heaviest August precipitation occurred on August 3, 2016, when 29 mm (1.1 in) of precipitation fell.

Best Places in New Zealand in August

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 August →

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 August: blue is cold, red is hot.

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

What to Wear in Oamaru in August

The weather can be unpredictable in August, 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.