Whanganui Weather in January
With daytime temperatures of 21°C (70°F) and nighttime lows of 15°C (59°F), January in Whanganui brings pleasant temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 77 mm (3 in) falls on average.
Rainfall in Whanganui in January
Historically, approximately 10 days this month are expected to have rain, averaging 77 mm (3 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Whanganui in January
Weather in Whanganui is at its perfect in January. Highs reach 21°C (70°F), while nights settle around 15°C (59°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights cool down to 15°C (59°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Whanganui in January
With approximately 210 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If your ideal day consists of dry skies and pleasant temperatures, January, February and March typically offer the best circumstances for Whanganui.
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 Whanganui's climate page.
Whanganui Temperature in January
Min Temperature
15°C (59°F)
Max Temperature
21°C (70°F)
Chance of Rain
34%
Precipitation
77 mm (3 in)
Rainy days
10 days
Humidity
75% *
Sunshine
210 hours *
Percentage Sunshine
*
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Whanganui typically stay consistent throughout January, with daily highs averaging around 21°C (70°F). Nights are cool, with lows typically ranging from 11°C (52°F) to 13°C (55°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Whanganui in January
Browse day-by-day weather records for Whanganui spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Whanganui historical weather extremes in January
The extremes listed below come from historical weather data collected in Whanganui from 1976 through 2025.
- The warmest day in January was on January 29, 2019, with a maximum of 29°C (84°F).
- The coldest January day was on January 2, 1992, with a maximum of 11°C (52°F).
- The coldest night in January in Whanganui was on January 16, 1977, with a minimum of 1°C (34°F).
Best Places in New Zealand in January
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
pleasant
tolerable
unpleasant
poor
What to Wear in Whanganui in January
Pleasant temperatures in January mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Whanganui in January
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 Whanganui's climate page.
Temperature Rainfall Sunshine Humidity
See the full Whanganui climate overview or explore weather in New Zealand.
