Greymouth Weather in September
September in Greymouth sees daytime temperatures around 14°C (57°F) and lows of 7°C (45°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.
Rainfall in Greymouth in September
As part of the rainy season, Greymouth sees around 20 days of rain in September, with an average of 250 mm (9.8 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Greymouth in September
Greymouth in September gets highs of 14°C (57°F) during the day and drops to 7°C (45°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 7°C (45°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Greymouth in September
The area experiences a moderate amount of sunshine, with approximately 148 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.September in Greymouth has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
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 Greymouth's climate page.
Greymouth Temperature in September
Min Temperature
7°C (45°F)
Max Temperature
14°C (57°F)
Chance of Rain
67%
Precipitation
250 mm (9.8 in)
Rainy days
20 days
Humidity
83% *
Sunshine
148 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Greymouth typically stay consistent throughout September, with daily highs averaging around 14°C (57°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 8°C (46°F).
Average temperatures in September
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 September
Historical weather for Greymouth in September
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 September
Our historical data for Greymouth spans 1976 to 2025, revealing these weather extremes.
- The warmest day in September was on September 13, 1989, with a maximum of 21°C (70°F).
- Greymouth experienced its chilliest September day on September 2, 1977, reaching only 6°C (43°F).
- The coldest night in September in Greymouth was on September 9, 1995, with a minimum of -2°C (28°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 →
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What to Wear in Greymouth in September
The weather can swing between comfortable and chilly in September, 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. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Greymouth 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 Greymouth's climate page.
Temperature Rainfall Sunshine Humidity
See the full Greymouth climate overview or explore weather in New Zealand.
