The Tongariro Crossing in New Zealand
It is called the most beautiful walk in New Zealand, the Tongariro Crossing. The official hiking season starts late October until end of April.
New Plymouth in May sees moderate temperatures, with highs around 16°C (61°F) and overnight lows of 12°C (54°F). With the rainy season in full effect, expect around 177 mm (7 in) of rainfall and regular showers throughout the month.
If your ideal day consists of dry skies and pleasant temperatures, January, February and March typically offer the best circumstances for New Plymouth.
Pick a month to see the average temperature, rainfall and sunshine in New Plymouth - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in New Plymouth typically stay consistent throughout May, with daily highs averaging around 16°C (61°F). Nights are cool, with lows typically ranging from 9°C (48°F) to 11°C (52°F).
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for New Plymouth spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Our historical data for New Plymouth spans 1993 to 2026, revealing these weather extremes.
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 →
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).
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. The water temperature sits at about 16°C (61°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full New Plymouth climate overview or explore weather in New Zealand.
Where to go in May - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
The Tongariro Crossing in New Zealand
It is called the most beautiful walk in New Zealand, the Tongariro Crossing. The official hiking season starts late October until end of April.
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