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Weather in Whanganui for January 2026

Your guide to Whanganui weather in January - trends and predictions

    Temperatures

  • In general, the average temperature in Whanganui at the beginning of January is 19.3 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 21.1 °C by the end of January.

    • Rain 🌧️

  • The climate of Whanganui in January is notably wet, with an average of 13 rainy days, and a total of 289 mm of precipitation.

Average dry days
18
Dry days
Average rainy days
13
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/10°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Whanganui Weather January

Move between months or click on a day
December
February
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
18°
2
Cloudy
21°
3
Partly cloudy
20°
4
Patchy rain possible
21°
5
Light rain shower
18°
6
Moderate or heavy rain shower
18°
7
Heavy rain at times
19°
8
Moderate rain at times
19°
9
Patchy rain possible
21°
10
Sunny
21°
11
Patchy rain possible
19°
12
Patchy rain possible
19°
13
Sunny
20°
14
Sunny
20°
15
Sunny
20°
16
Sunny
21°
17
Partly cloudy
22°
18
Sunny
23°
19
Overcast
23°
20
Partly cloudy
22°
21
Heavy rain at times
22°
22
Patchy rain possible
22°
23
Patchy rain possible
22°
24
Patchy rain possible
20°
25
Moderate rain at times
22°
26
Patchy rain possible
22°
27
Moderate or heavy rain shower
19°
28
Moderate or heavy rain shower
19°
29
Moderate or heavy rain shower
21°
30
Heavy rain at times
22°
31
Patchy rain possible
23°

Temperatures trend during January in Whanganui

See the weather trend as well as the moving average line

January weather in Whanganui day by day

Click on a date for more information
December February
Date Weather Temperatures Rain UV More
1 Jan. Partly cloudy
Partly cloudy
 18° /11° 0.5 mm 6
2 Jan. Cloudy
Cloudy
 21° /11° 0.2 mm 6
3 Jan. Partly cloudy
Partly cloudy
 20° /11° 3.4 mm 6
4 Jan. Patchy rain possible
Patchy rain possible
 21° /11° 3.4 mm 6
5 Jan. Light rain shower
Light rain shower
 18° /12° 7.4 mm 6
6 Jan. Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /13° 6.7 mm 6
7 Jan. Heavy rain at times
Heavy rain at times
 19° /12° 4.3 mm 7
8 Jan. Moderate rain at times
Moderate rain at times
 19° /12° 5.1 mm 6
9 Jan. Patchy rain possible
Patchy rain possible
 21° /12° 0 mm 7
10 Jan. Sunny
Sunny
 21° /12° 1.6 mm 7
11 Jan. Patchy rain possible
Patchy rain possible
 19° /13° 5.8 mm 6
12 Jan. Patchy rain possible
Patchy rain possible
 19° /11° 0.4 mm 7
13 Jan. Sunny
Sunny
 20° /10° 0 mm 8
14 Jan. Sunny
Sunny
 20° /11° 0 mm 8
15 Jan. Sunny
Sunny
 20° /11° 5.5 mm 7
16 Jan. Sunny
Sunny
 21° /11° 0.1 mm 7
17 Jan. Partly cloudy
Partly cloudy
 22° /13° 0.1 mm 8
18 Jan. Sunny
Sunny
 23° /12° 0.1 mm 7
19 Jan. Overcast
Overcast
 23° /13° 0 mm 7
20 Jan. Partly cloudy
Partly cloudy
 22° /15° 0.2 mm 7
21 Jan. Heavy rain at times
Heavy rain at times
 22° /14° 3.5 mm 7
22 Jan. Patchy rain possible
Patchy rain possible
 22° /14° 0.7 mm 7
23 Jan. Patchy rain possible
Patchy rain possible
 22° /12° 2.8 mm 7
24 Jan. Patchy rain possible
Patchy rain possible
 20° /12° 0.1 mm 7
25 Jan. Moderate rain at times
Moderate rain at times
 22° /12° 2.3 mm 7
26 Jan. Patchy rain possible
Patchy rain possible
 22° /13° 1.3 mm 7
27 Jan. Moderate or heavy rain shower
Moderate or heavy rain shower
 19° /12° 7 mm 6
28 Jan. Moderate or heavy rain shower
Moderate or heavy rain shower
 19° /12° 27.6 mm 7
29 Jan. Moderate or heavy rain shower
Moderate or heavy rain shower
 21° /12° 3.8 mm 7
30 Jan. Heavy rain at times
Heavy rain at times
 22° /15° 2.4 mm 7
31 Jan. Patchy rain possible
Patchy rain possible
 23° /15° 0.2 mm 7
Next
Important Notice
Our weather forecast for Whanganui in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Whanganui forecast closer to your planned date for the most up-to-date weather information.
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Whanganui in January - FAQ

What are the expected maximum and minimum temperatures in Whanganui during January?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Whanganui during January?
Significant rainfall exceeding 289 mm is expected in Whanganui during January, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Whanganui during January?
The average wind speed in Whanganui during January is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

January rainfall patterns in Whanganui

Explore the daily rainfall trends and prepare for Whanganuis January weather 💧

UV exposure in Whanganui during January

Stay informed about UV levels for safe outdoor activities throughout the month of January ☀️

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Location coordinates Where is Whanganui?

Get accurate weather forecasts for Whanganui, located at latitude -39.933 and longitude 175.05. Stay updated with localized weather information tailored for Whanganui.

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