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.
Oneroa in January sees high daytime temperatures of 23°C (73°F) and nighttime lows of 18°C (64°F). With just 71 mm (2.8 in) of rainfall on average, it's the driest month of the year.
So this is a great month to visit if you prefer dry days with pleasant temperatures.
Pick a month to see the average temperature, rainfall and sunshine in Oneroa - and find the best time to visit.
50-year average (1976-2026)
Based on our historical records, temperatures in Oneroa typically stay consistent throughout January, with daily highs averaging around 23°C (73°F). Nights are pleasant, with lows around 16°C (61°F).
50-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Oneroa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 30 years of weather observations in Oneroa between 1995 and 2025, these are the recorded 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 January →
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).
For Oneroa in January, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Oneroa climate overview or explore weather in New Zealand.
Where to go in January - 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.
White-water sledge and raft in Rotorua
We recommend to white-water sledge and raft in Rotorua in summer (January, February) when the Glacier melt fills the rivers. This is the best time.
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