Whanganui weather in July

In July, Whanganui sees average daytime highs of 12°C and overnight lows near 9°C, with 105 mm of rain across 14.3 wet days and about 9.5 hours of daylight. It is the 12th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 12°C through the month. The sky is clear or mostly clear about 30% of the time in July, and the air most often feels dry.

Daylight stretches from about 9 h 12 min at the start of July to 9 h 48 min by month's end. Set against the rest of the year, July is Whanganui's 11th-clearest and 5th-windiest month. For the whole year in context, see Whanganui's year-round climate.

Daytime high
12°
12th warmest
Overnight low
1st coldest
Rainfall
105 mm
14.3 wet days
Daylight
9 h 24 min
8:43 AM – 6:08 PM
Cloud cover
59%
11th clearest
Wind
22 km/h
5th windiest
Solar energy
1.86 kWh/m²
Travel score
2.9
out of 10

Whanganui is city in New Zealand's North Island.

Density
20,736/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 12°C through the month.

A typical July day in Whanganui reaches about 12°C in the afternoon and slips back to 9°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 14°C. Set against its neighbours, July runs about 1°C cooler than June and on par with August.

10°13°15°151015202531
Avg high (°C)Avg low (°C)
1129
2129
3129
4129
5129
6129
7129
8129
9129
10129
11129
12129
13129
14129
15129
16129
17129
18129
19129
20129
21129
22129
23129
24129
25129
26129
27129
28129
29129
30129
31129

Whanganui weather by month

How July compares with the rest of the year at a glance. July is the 12th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 15°719.314.56.3
Feb20° / 16°668.113.66.5
Mar18° / 15°689.612.36.2
Apr17° / 13°9811115.2
May15° / 11°9712.49.84.3
Jun13° / 10°10914.19.23.2
Jul12° / 10514.39.52.9
Aug12° / 10214.710.43.0
Sep13° / 10°9713.611.73.4
Oct14° / 11°10714.213.13.8
Nov16° / 12°8912.214.24.6
Dec17° / 14°10012.714.85.4

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 19% of July, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
24951
34951
44951
54951
64852
74852
84852
94852
104852
114753
124753
134753
144753
154753
164753
174753
184753
194852
204852
214852
224951
234951
244951
255050
265050
275149
285149
295248
305248
315248

Chance of precipitation in July

Any precipitation

Whanganui gets around 105 mm of rain over 14.3 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 47% and peaks near 50% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
146
246
346
445
545
645
745
845
946
1046
1147
1247
1348
1449
1549
1649
1750
1850
1950
2049
2149
2248
2348
2447
2547
2647
2746
2846
2945
3045
3145

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in July

Winds average 22 km/h in July.

Across July, daily wind ranges from about 22 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
123breezy
223breezy
323breezy
423breezy
523breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1122breezy
1222breezy
1322breezy
1422breezy
1522breezy
1622breezy
1722breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in July

DaylightNight

Daylight runs from about 9 h 12 min at the start of July to 9 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over July. Sunrise moves from 8:47 AM to 8:31 AM, and sunset from 5:59 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.28:475:59
29.28:476:00
39.28:476:00
49.28:476:01
59.28:476:01
69.38:466:02
79.38:466:02
89.38:466:03
99.38:466:03
109.38:456:04
119.38:456:05
129.38:456:05
139.48:446:06
149.48:446:07
159.48:436:07
169.48:436:08
179.48:426:09
189.58:416:10
199.58:416:11
209.58:406:11
219.58:396:12
229.68:396:13
239.68:386:14
249.68:376:15
259.78:366:16
269.78:366:16
279.78:356:17
289.78:346:18
299.88:336:19
309.88:326:20
319.88:316:21

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 1.86 kWh/m².

For context, solar energy here swings from a low near 1.64 kWh/m² to a high of 7 kWh/m² in January across the year — July's 1.86 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.7Dim
21.7Dim
31.7Dim
41.7Dim
51.7Dim
61.7Dim
71.7Dim
81.7Dim
91.8Dim
101.8Dim
111.8Dim
121.8Dim
131.8Dim
141.8Dim
151.8Dim
161.8Dim
171.9Dim
181.9Dim
191.9Dim
201.9Dim
211.9Dim
221.9Dim
232.0Dim
242.0Dim
252.0Moderate
262.0Moderate
272.1Moderate
282.1Moderate
292.1Moderate
302.1Moderate
312.2Moderate
Planning a trip in July

Is July a good time to visit Whanganui?

Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.9
Sightseeing
12th-best month of the year
0.0
Beach & pool
9th-best month of the year

July is a weaker month for outdoor sightseeing in Whanganui.

What to pack for Whanganui in July

From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In July, Whanganui sees daytime highs around 12°C and nights near 9°C. Pack a warm layer and rain gear. Worth having: a windbreaker. About 14 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Whanganui in July

The nearest coast averages about 13°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 km away) is warmest in February at about 19°C and coldest in August near 13°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

12°14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan18Cool
Feb19Cool
Mar18Cool
Apr17Cool
May16Cool
Jun14Bracing
Jul13Bracing
Aug13Bracing
Sep13Bracing
Oct14Bracing
Nov15Bracing
Dec16Cool

UV index in Whanganui in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Whanganui peaks around January 12 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateLowModerateHighVery highExtremeJan 12UV 12Jun 17UV 2
UV index (midday)Level
Jan12Extreme
Feb11Extreme
Mar7High
Apr5Moderate
May2Moderate
Jun2Low
Jul2Moderate
Aug3Moderate
Sep4Moderate
Oct7High
Nov10Very high
Dec11Extreme
Location & terrain

Where is Whanganui?

Whanganui sits at 39.9°S, 175.1°E, 18 m above sea level, in New Zealand. The nearest listed city is Palmerston North, 67 km away.

ParaparaumuMastertonNew PlymouthUpper HuttPoriruaLower Hutt

Topography around Whanganui

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Whanganui.

Within 3 km, the terrain around Whanganui has only modest variations in elevation — a maximum elevation change of 103 m around an average of 28 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 300 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,746 m.

The land around Whanganui is covered by grassland (39%), artificial surfaces (28%) and trees (25%) within 3 km, grassland (42%), water (32%) and trees (22%) within 16 km, and grassland (44%), trees (29%) and water (25%) within 80 km.

3 km
103 m
16 km
300 m
80 km
1,746 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Palmerston North 67 km · Levin 80 km · Paraparaumu 109 km · Masterton 125 km · New Plymouth 127 km · Upper Hutt 134 km · Porirua 135 km · Lower Hutt 143 km

New Zealand travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type I
230 V · 50 Hz
Prices
≈ 86% of US
price level, 2025
GDP per capita
$49,591
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.5
per 100k, 2022
Road deaths
9.6
per 100k/yr, 2019
Income group
High
World Bank
Religion
no religion 49%Christian 37%objected to answering 7%Hindu 3%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Whanganui (-39.9333°, 175.05°, elevation 18 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).