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Cromwell Weather in August

During August, Cromwell experiences low daytime temperatures of 5°C (41°F) and cooler nights around -2°C (28°F). As part of the winter season, expect quite a bit of snow/rainfall. Around 72 mm (2.8 in) is typical.

Rainfall in Cromwell in August

This month experiences about 7 days of snow/rain according to historical data, averaging 72 mm (2.8 in). The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.

Temperature in Cromwell in August

August in Cromwell brings typical temperatures with highs around 5°C (41°F) and lows of -2°C (28°F). August is a notable month of the winter season. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. With lows of -2°C (28°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated.

Sunshine in Cromwell in August

The area experiences a moderate amount of sunshine, with approximately 155 hours of sunlight expected. This means a decent mix of sun and overcast.

If you prefer dry days with pleasant temperatures, August may not be the ideal month to visit Cromwell. Our weather planner can help you explore destinations with more pleasant weather conditions.

Cromwell Temperature in August

Min Temperature

-2°C (28°F)

Max Temperature

5°C (41°F)

Chance of Rain

22%

Precipitation

72 mm (2.8 in)

Rainy days

7 days

Sunshine

155 hours *

Percentage Sunshine

* Data from: Wanaka, New Zealand (38 KM, 24 Miles).

Cromwell Weather by Month

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

January

18°C (64°F)View January → February

19°C (66°F)View February → March

16°C (61°F)View March → April

13°C (55°F)View April → May

9°C (48°F)View May → June

4°C (39°F)View June → July

3°C (37°F)View July → August

5°C (41°F)View August → This monthSeptember

9°C (48°F)View September → October

12°C (54°F)View October → November

14°C (57°F)View November → December

17°C (63°F)View December →

Best Time to Visit Cromwell →

Daily Historical Temperatures

31-year average (1995-2025)

Based on our historical records, temperatures in Cromwell typically stay consistent throughout August, with daily highs averaging around 5°C (41°F). Nights are very cold, with lows typically ranging from -2°C (28°F) to 1°C (34°F).

Average temperatures in August

Daily Historical Precipitation

31-year average (1995-2025)

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

Average precipitation in August

Historical weather records for Cromwell in August

Browse day-by-day weather records for Cromwell spanning 32 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Cromwell historical weather extremes in August

Based on weather observations in Cromwell between 1995 and 2026, these are the recorded extremes during August.

The hottest August day on record in Cromwell reached 19°C (66°F) (August 5, 2022).
The coldest August day was on August 15, 2011, with a maximum of 0°C (32°F).
Cromwell registered its coldest August night on August 10, 2006, with temperatures dropping to -13°C (9°F).
The wettest August day on record brought 38 mm (1.5 in) of precipitation to Cromwell (August 12, 2009).

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 Cromwell in August

We recommend to layer up for chilly conditions in Cromwell in August. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. Rain is likely on several days, so bring a good rain jacket. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.