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Weather in Whanganui for December 2026

Your guide to Whanganui weather in December - trends and predictions

    Temperatures

  • In general, the average temperature in Whanganui at the beginning of December is 18.9 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 20.7 °C by the end of December.

    • Rain 🌧️

  • Whanganui in December brings notable rainfall, with an average of 18 rainy days and a total precipitation of 74.6 mm.

Average dry days
13
Dry days
Average rainy days
18
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/12°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Whanganui Weather December

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

Temperatures trend during December in Whanganui

See the weather trend as well as the moving average line

December weather in Whanganui day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
1 Dec. Patchy rain possible
Patchy rain possible
 19° /11° 0.1 mm 6
2 Dec. Overcast
Overcast
 19° /11° 0.3 mm 6
3 Dec. Light rain
Light rain
 18° /13° 16.2 mm 6
4 Dec. Patchy rain possible
Patchy rain possible
 18° /12° 3.4 mm 6
5 Dec. Patchy rain possible
Patchy rain possible
 18° /13° 0.6 mm 6
6 Dec. Sunny
Sunny
 20° /12° 0.2 mm 7
7 Dec. Patchy rain possible
Patchy rain possible
 20° /11° 0.1 mm 7
8 Dec. Sunny
Sunny
 21° /11° 0.6 mm 7
9 Dec. Sunny
Sunny
 20° /12° 1.2 mm 7
10 Dec. Light drizzle
Light drizzle
 20° /12° 0.4 mm 7
11 Dec. Overcast
Overcast
 19° /10° 0 mm 7
12 Dec. Patchy rain possible
Patchy rain possible
 17° /11° 1.8 mm 6
13 Dec. Sunny
Sunny
 19° /9° 0.3 mm 7
14 Dec. Patchy rain possible
Patchy rain possible
 20° /11° 0.1 mm 7
15 Dec. Sunny
Sunny
 21° /11° 0 mm 8
16 Dec. Patchy rain possible
Patchy rain possible
 20° /12° 9.9 mm 7
17 Dec. Overcast
Overcast
 18° /11° 3 mm 6
18 Dec. Patchy rain possible
Patchy rain possible
 19° /10° 0.5 mm 7
19 Dec. Patchy rain possible
Patchy rain possible
 19° /12° 1.1 mm 6
20 Dec. Light rain shower
Light rain shower
 18° /12° 1 mm 7
21 Dec. Sunny
Sunny
 21° /12° 1.3 mm 7
22 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 20° /12° 4.7 mm 5
23 Dec. Light rain
Light rain
 21° /14° 6.7 mm 6
24 Dec. Patchy rain possible
Patchy rain possible
 21° /14° 1.6 mm 8
25 Dec. Patchy rain possible
Patchy rain possible
 21° /13° 1.2 mm 8
26 Dec. Patchy rain possible
Patchy rain possible
 21° /13° 4.8 mm 6
27 Dec. Patchy rain possible
Patchy rain possible
 19° /12° 1.4 mm 6
28 Dec. Sunny
Sunny
 21° /10° 0.1 mm 8
29 Dec. Sunny
Sunny
 22° /11° 1.2 mm 7
30 Dec. Overcast
Overcast
 21° /14° 4.4 mm 5
31 Dec. Sunny
Sunny
 20° /13° 6.6 mm 6
Next
Important Notice
Our weather forecast for Whanganui in December 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 December - FAQ

What are the expected maximum and minimum temperatures in Whanganui during December?

Enjoy moderate daytime temperatures of up to 19° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Whanganui during December?

Moderate rainfall is anticipated in Whanganui during December, with a total of 74.6 mm spread over approximately 18 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Whanganui during December?

The average wind speed in Whanganui during December is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in Whanganui

Explore the daily rainfall trends and prepare for Whanganuis December weather 💧
Typically, Whanganui has 18 rainy days in December with a total of 74.6 mm of rainfall.

UV exposure in Whanganui during December

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

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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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