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Greymouth Weather in August

August in Greymouth typically sees daytime highs of 13°C (55°F) and nighttime lows of 6°C (43°F). August falls within the rainy season, so heavy rainfall is to be expected.

Rainfall in Greymouth in August

Greymouth is in the rainy season in August, with rain on around 18 days and an average of 213 mm (8.4 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.

Temperature in Greymouth in August

If you're visiting Greymouth in August, expect highs of 13°C (55°F) and overnight lows around 6°C (43°F). Conditions are often most pleasant around the middle of the day. With lows around 6°C (43°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Greymouth in August

With about 140 hours of sunshine, the area enjoys a nice balance of sun and rainy moments, creating a pleasant environment.

August in Greymouth has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.

Greymouth Temperature in August

Min Temperature

6°C (43°F)

Max Temperature

13°C (55°F)

Chance of Rain

58%

Precipitation

213 mm (8.4 in)

Rainy days

18 days

Humidity

81% *

Sunshine

140 hours *

Percentage Sunshine

* Data from: Hokitika, New Zealand (34 KM, 21 Miles).

Greymouth Weather by Month

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

January

20°C (68°F)View January → February

21°C (70°F)View February → March

19°C (66°F)View March → April

17°C (63°F)View April → May

15°C (59°F)View May → June

13°C (55°F)View June → July

13°C (55°F)View July → August

13°C (55°F)View August → September

14°C (57°F)View September → This monthOctober

16°C (61°F)View October → November

17°C (63°F)View November → December

19°C (66°F)View December →

Best Time to Visit Greymouth →

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Greymouth typically stay consistent throughout August, with daily highs averaging around 13°C (55°F). Nights are cold, with lows around 5°C (41°F).

Average temperatures in August

Daily Historical Precipitation

50-year average (1976-2025)

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

Average precipitation in August

Historical weather records for Greymouth in August

Browse day-by-day weather records for Greymouth spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Greymouth historical weather extremes in August

Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Greymouth.

On August 26, 1979, temperatures climbed to 19°C (66°F), marking the warmest August day on record.
The lowest daytime temperature in August was 6°C (43°F), recorded on August 16, 1998.
Nighttime temperatures dropped to -2°C (28°F) on August 9, 2016, marking the coldest August night on record.

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 Greymouth in August

The weather can swing between comfortable and chilly in August, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.