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Weather in Whanganui for January 2026

Your guide to Whanganui weather in January - trends and predictions

    Temperatures

  • Until now, January 2026 in Whanganui has been nearly identical to the historical average, with a temperature of 20.4 °C (showing only a slight deviation of 0.5 °C).

  • The forecast for the next days in Whanganui predicts temperatures to be around 19 °C, close to the historical average.

  • In general, the average temperature in Whanganui at the beginning of January is 19.3 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 19.4 °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
Light rain shower
19°
2
Patchy rain possible
20°
3
Light rain shower
19°
4
Patchy rain possible
20°
5
Light rain shower
18°
6
Moderate or heavy rain shower
19°
7
Heavy rain at times
20°
8
Moderate rain at times
20°
9
Patchy rain possible
21°
10
Sunny
21°
11
Patchy rain possible
21°
12
Patchy rain possible
20°
13
Partly cloudy
20°
14
Sunny
20°
15
Light rain shower
20°
16
Sunny
21°
17
Patchy rain possible
20°
18
Partly cloudy
19°
19
Partly cloudy
21°
20
Partly cloudy
22°
21
Partly cloudy
21°
22
Moderate rain
17°
23
Moderate rain
18°
24
Patchy rain possible
17°
25
Patchy rain possible
20°
26
Moderate rain
16°
27
Patchy rain possible
17°
28
Patchy rain possible
21°
29
Patchy rain possible
20°
30
Patchy rain possible
19°
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. Light rain shower
Light rain shower
 19° /12° 0.8 mm 6
2 Jan. Patchy rain possible
Patchy rain possible
 20° /11° 0.1 mm 7
3 Jan. Light rain shower
Light rain shower
 19° /11° 3.7 mm 5
4 Jan. Patchy rain possible
Patchy rain possible
 20° /11° 2.5 mm 8
5 Jan. Light rain shower
Light rain shower
 18° /11° 5.5 mm 8
6 Jan. Moderate or heavy rain shower
Moderate or heavy rain shower
 19° /12° 5 mm 8
7 Jan. Heavy rain at times
Heavy rain at times
 20° /12° 3.2 mm 7
8 Jan. Moderate rain at times
Moderate rain at times
 20° /12° 3.8 mm 8
9 Jan. Patchy rain possible
Patchy rain possible
 21° /13° 0 mm 8
10 Jan. Sunny
Sunny
 21° /13° 1.2 mm 8
11 Jan. Patchy rain possible
Patchy rain possible
 21° /14° 4.4 mm 8
12 Jan. Patchy rain possible
Patchy rain possible
 20° /11° 0.8 mm 8
13 Jan. Partly cloudy
Partly cloudy
 20° /10° 0 mm 9
14 Jan. Sunny
Sunny
 20° /11° 0.9 mm 7
15 Jan. Light rain shower
Light rain shower
 20° /12° 10.5 mm 6
16 Jan. Sunny
Sunny
 21° /11° 0.1 mm 7
17 Jan. Patchy rain possible
Patchy rain possible
 20° /13° 0.2 mm 2.1
18 Jan. Partly cloudy
Partly cloudy
 19° /13° 0 mm 2.4
19 Jan. Partly cloudy
Partly cloudy
 21° /13° 0.1 mm 2.4
20 Jan. Partly cloudy
Partly cloudy
 22° /13° 0 mm 0
21 Jan. Partly cloudy
Partly cloudy
 21° /14° 0 mm 8
22 Jan. Moderate rain
Moderate rain
 17° /15° 15.9 mm 7
23 Jan. Moderate rain
Moderate rain
 18° /15° 6.8 mm 7
24 Jan. Patchy rain possible
Patchy rain possible
 17° /14° 0.1 mm 6
25 Jan. Patchy rain possible
Patchy rain possible
 20° /14° 0.2 mm 7
26 Jan. Moderate rain
Moderate rain
 16° /15° 7.3 mm 7
27 Jan. Patchy rain possible
Patchy rain possible
 17° /16° 1.6 mm 7
28 Jan. Patchy rain possible
Patchy rain possible
 21° /16° 0.5 mm 7
29 Jan. Patchy rain possible
Patchy rain possible
 20° /15° 1.4 mm 7
30 Jan. Patchy rain possible
Patchy rain possible
 19° /12° 0.2 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 💧
Typically, Whanganui has 13 rainy days in January with a total of 289 mm of rainfall.

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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