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Weather in Whanganui for May 2026

Your guide to Whanganui weather in May - trends and predictions

    Temperatures

  • In general, the average temperature in Whanganui at the beginning of May is 16.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 15.1 °C by the end of May.

    • Rain 🌧️

  • Whanganui in May brings notable rainfall, with an average of 17 rainy days and a total precipitation of 365.9 mm.

Average dry days
14
Dry days
Average rainy days
17
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/7°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Whanganui Weather May

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

Temperatures trend during May in Whanganui

See the weather trend as well as the moving average line

May weather in Whanganui day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Light rain shower
Light rain shower
 18° /10° 12.4 mm 5
2 May Patchy rain possible
Patchy rain possible
 15° /11° 4 mm 4
3 May Patchy rain possible
Patchy rain possible
 17° /10° 4.2 mm 5
4 May Moderate or heavy rain shower
Moderate or heavy rain shower
 15° /9° 14.7 mm 5
5 May Moderate or heavy rain shower
Moderate or heavy rain shower
 17° /8° 1.9 mm 5
6 May Moderate rain at times
Moderate rain at times
 17° /10° 1.7 mm 5
7 May Cloudy
Cloudy
 16° /9° 0 mm 5
8 May Partly cloudy
Partly cloudy
 17° /8° 0.1 mm 5
9 May Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /10° 8.6 mm 4
10 May Moderate or heavy rain shower
Moderate or heavy rain shower
 14° /6° 7.4 mm 4
11 May Partly cloudy
Partly cloudy
 12° /6° 5.5 mm 4
12 May Overcast
Overcast
 14° /5° 0 mm 4
13 May Patchy rain possible
Patchy rain possible
 15° /7° 0.5 mm 4
14 May Moderate or heavy rain shower
Moderate or heavy rain shower
 15° /8° 1.5 mm 4
15 May Moderate or heavy rain shower
Moderate or heavy rain shower
 15° /9° 5.8 mm 4
16 May Patchy rain possible
Patchy rain possible
 16° /10° 1.8 mm 4
17 May Patchy rain possible
Patchy rain possible
 16° /8° 0.2 mm 5
18 May Partly cloudy
Partly cloudy
 16° /9° 5.1 mm 5
19 May Heavy rain at times
Heavy rain at times
 15° /9° 1.9 mm 4
20 May Moderate or heavy rain shower
Moderate or heavy rain shower
 15° /7° 8.7 mm 5
21 May Moderate or heavy rain shower
Moderate or heavy rain shower
 13° /8° 13 mm 4
22 May Moderate or heavy rain shower
Moderate or heavy rain shower
 14° /9° 4 mm 4
23 May Sunny
Sunny
 14° /8° 1.4 mm 5
24 May Patchy rain possible
Patchy rain possible
 14° /7° 0.1 mm 4
25 May Sunny
Sunny
 15° /7° 0.2 mm 5
26 May Patchy rain possible
Patchy rain possible
 15° /11° 3.4 mm 4
27 May Overcast
Overcast
 15° /10° 1.6 mm 4
28 May Sunny
Sunny
 16° /9° 4.5 mm 5
29 May Heavy rain at times
Heavy rain at times
 15° /11° 4.7 mm 4
30 May Patchy rain possible
Patchy rain possible
 15° /10° 2 mm 4
31 May Patchy rain possible
Patchy rain possible
 15° /11° 0.8 mm 4
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Important Notice
Our weather forecast for Whanganui in May 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 May - FAQ

What are the expected maximum and minimum temperatures in Whanganui during May?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Whanganui during May?
Significant rainfall exceeding 365.9 mm is expected in Whanganui during May, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Whanganui during May?
The average wind speed in Whanganui during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Whanganui

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

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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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