Greymouth Weather in May
May in Greymouth brings moderate temperatures, with highs of 15°C (59°F) and nights dropping to 8°C (46°F). The rainy season is in full swing this month, so frequent downpours are part of the picture.
Rainfall in Greymouth in May
As part of the rainy season, Greymouth sees around 18 days of rain in May, with an average of 220 mm (8.7 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Greymouth in May
Greymouth in May gets highs of 15°C (59°F) during the day and drops to 8°C (46°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 8°C (46°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Greymouth in May
The month experiences a moderate amount of sunlight, with 122 hours of sunshine. This provides a nice balance between sunshine and rain.If you prefer dry days with pleasant temperatures, May may not be the ideal month to visit Greymouth. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 May
Min Temperature
8°C (46°F)
Max Temperature
15°C (59°F)
Chance of Rain
61%
Precipitation
220 mm (8.7 in)
Rainy days
18 days
Humidity
84% *
Sunshine
122 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Greymouth typically stay consistent throughout May, with daily highs averaging around 15°C (59°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 9°C (48°F).
Average temperatures in May
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 May
Historical weather for Greymouth in May
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 May
Our historical data for Greymouth spans 1976 to 2026, revealing these weather extremes.
- The warmest day in May was on May 1, 2011, with a maximum of 25°C (77°F).
- The coldest May day was on May 15, 1979, with a maximum of 6°C (43°F).
- The coldest night in May in Greymouth was on May 29, 2013, with a minimum of -2°C (28°F).
Best Places in New Zealand in May
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 May →
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What to Wear in Greymouth in May
The weather can swing between comfortable and chilly in May, 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.What To Do in Greymouth in May
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.
