Whanganui (Wanganui) weather
Loading live data…Light drizzle,much the same tomorrow
European, the American and the German model put Whanganui's high today between 17° and 22°, a 5° split. Tomorrow: cloudy, around 19°, with a 39% chance of rain.
Latest for Whanganui: European (ECMWF): 13° Partly cloudy · American (NOAA GFS): 12° Overcast · German (DWD ICON): 14° Overcast.
CheckWeather.io on iPhoneFree. No ads, no account.Whanganui weather in numbers
from 30 years of measured normalsWhanganui swings 15°C across the year, from 21°C highs in January to 6°C lows in July, and June is usually the wettest month in a year that brings about 1098 mm of precipitation.
The weather map: all three models at once
European, American, German side by side around Whanganui and nearby towns.Live rain radar →Whanganui hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
Whanganui 10-day forecast, out to 14 days
where the models agree, and where they splitWhanganui, New Zealand. Often shortened to Wanganui. Below we compare what European, American, German forecast for Whanganui right now and flag exactly where they disagree, then break down Whanganui's weather month by month and which forecast model has been most accurate here.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in New Zealand before you trust any single number.
Whanganui weather by month
what to expect in Whanganui through the year, 1991-2020 averagesHere is Whanganui's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Whanganui by season.
What Whanganui's weather is like through the year
Whanganui runs from warm summers, with January highs near 21°C, to cool winters, when July lows sit around 6°C (a swing of about 15°C across the year). June is usually the wettest month, and Whanganui sees roughly 1098 mm of precipitation annually.
Best time to visit Whanganui
The most comfortable time to visit Whanganui is usually January, February, March and April, when daytime highs sit in the pleasant 16-26°C range and the heaviest June rain is behind you.
How Whanganui's weather has changed since 1995
30 years of daily data, 1995-2024, shown as changeAround Whanganui, the difference between 1995-2004 and 2015-2024 is +0.3°C, within the normal swing from year to year.
Days above 25°C
2015-2024 against 1995-2004. Within the normal year-to-year swing
Average wind
2015-2024 against 1995-2004. Within the normal year-to-year swing
Bars: each year against the area's 30-year average. Dashed lines: the average of the first and the last ten years.
See the numbers year by year
| Year | Temp vs average | Days >25°C vs avg | Wind vs avg |
|---|---|---|---|
| 1995 | −0.3°C | −5 | −4% |
| 1996 | −0.6°C | −5 | −0% |
| 1997 | −0.7°C | −5 | +1% |
| 1998 | +0.6°C | +11 | +3% |
| 1999 | +0.6°C | +17 | −7% |
| 2000 | ±0.0°C | −0 | +1% |
| 2001 | +0.3°C | −0 | −4% |
| 2002 | −0.1°C | −4 | +11% |
| 2003 | ±0.0°C | −0 | −0% |
| 2004 | −0.9°C | −2 | +6% |
| 2005 | +0.3°C | +5 | −5% |
| 2006 | −0.6°C | +2 | +6% |
| 2007 | −0.2°C | −3 | +1% |
| 2008 | +0.1°C | +5 | −0% |
| 2009 | −0.9°C | −4 | +1% |
| 2010 | −0.3°C | −5 | −2% |
| 2011 | −0.2°C | −1 | −2% |
| 2012 | −0.6°C | −3 | −0% |
| 2013 | +0.3°C | +2 | −2% |
| 2014 | −0.3°C | −2 | +5% |
| 2015 | −0.3°C | +2 | +1% |
| 2016 | +0.6°C | +9 | +5% |
| 2017 | ±0.0°C | −4 | −4% |
| 2018 | +0.5°C | +15 | −5% |
| 2019 | +0.4°C | −1 | +5% |
| 2020 | ±0.0°C | −2 | −0% |
| 2021 | +0.3°C | −5 | −2% |
| 2022 | +0.6°C | +2 | −5% |
| 2023 | +0.2°C | −5 | −2% |
| 2024 | +0.1°C | −0 | −4% |
Source: NASA POWER daily data from the MERRA-2 reanalysis, 1995-2024. Each value describes a grid square of about 50 km around Whanganui, not a weather station, and a square that takes in sea or a large lake runs milder than the city itself. That is why this section shows change against the square's own 30-year average rather than counts you could compare with a local station. Rain and snow are left out because their long-term record in this dataset is not consistent over time. "Within the normal year-to-year swing" means the change is smaller than the usual differences between single years.
Which forecast is most accurate in Whanganui?
CheckWeather Score, graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 244 cities. Lower error means a higher score. See which forecast model is most accurate in New Zealand, how we measure forecast accuracy, or which model each weather app uses.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Whanganui, scoring 88/100 on our CheckWeather Score, ahead of the German at 79. See the full NZ accuracy scoreboard for exactly how every model is tested.
What do you think of the forecasts?
your vote countsThe accuracy above is the measured record. This is your opinion: which forecast service do you trust most in New Zealand? Give each 1 to 5 stars.
One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.
Where the models disagree
temperature and rain, judged separatelyThe models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.