New Plymouth Weather in May
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.
Rainfall in New Plymouth in May
As part of the rainy season, New Plymouth sees around 15 days of rain in May, with an average of 177 mm (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 New Plymouth in May
Temperatures in New Plymouth in May top out at 16°C (61°F) and drop to 12°C (54°F) overnight. The difference between afternoon and evening temperatures is usually noticeable. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in New Plymouth in May
The area enjoys a balanced 146 hours of sunlight, ensuring it's neither too rainy nor too sunny.
Wind Speed in New Plymouth in May
May sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.
Average water temperature in May
The water is 16°C (61°F) this month — cool enough to feel refreshing on a warm day, but cold enough that most people won't stay in for long without a wetsuit.If your ideal day consists of dry skies and pleasant temperatures, January, February and March typically offer the best circumstances for New Plymouth.
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 New Plymouth's climate page.
New Plymouth Temperature in May
Min Temperature
12°C (54°F)
Max Temperature
16°C (61°F)
Water Temperature
16°C (61°F)
Chance of Rain
50%
Precipitation
177 mm (7 in)
Rainy days
15 days
Humidity
85%
Windspeed
4 m/s (8 knots)
Sunshine
146 hours
Percentage Sunshine
49%
Daily Historical Temperatures
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).
Average temperatures in May
Daily Historical Precipitation
49-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 New Plymouth in May
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.
New Plymouth historical weather extremes in May
Our historical data for New Plymouth spans 1993 to 2025, revealing these weather extremes.
- The warmest day in May was on May 1, 2023, with a maximum of 22°C (72°F).
- On May 29, 2001, New Plymouth saw its coldest May day with temperatures maxing out at 9°C (48°F).
- The coldest night in May in New Plymouth was on May 22, 2009, with a minimum of -1°C (30°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 New Plymouth in May
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.What To Do in New Plymouth 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 New Plymouth's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full New Plymouth climate overview or explore weather in New Zealand.
