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Whanganui weather & best time to visit

Sun, sea & sand

Whanganui at a glance

Best time
Feb
Warmest month
Feb · 23°
Warmest sea
Feb · 18.9°
Sunshine a year
2,140 h
Rain a year
1,032 mm
Climate
Maritime
Time zone
UTC+13 / UTC+12
Elevation
18 m

Climate in Whanganui

Whanganui has a maritime climate with moderate summers and cool, often grey winters. February is the warmest month with average highs of 23 °C, while July is the coolest at 14 °C. With around 2,140 hours of sunshine a year, Whanganui is moderately sunny; January is the sunniest month with 7.8 hours a day.

Holiday weather through the year

Best time to visit

Best time to visit Whanganui

The best time to visit Whanganui is in February. The sea stays too cool for a classic beach holiday: even in February it only reaches 18.9 °C. For sightseeing, day trips and hiking, conditions are most comfortable from January to May and in November. Rain is frequent from June to October and in December; the wettest month is October with 104 mm.

Whanganui through the seasons

How the weather changes over the seasons, with averages for each.

Whanganui in spring

Sep – Nov

18

Poor

  • 16–19 °C by day
  • Sea 14 °C
  • 6.2 h of sun a day
  • 39 rainy days in all

Whanganui in summer

Dec – Feb

48

Fair

  • 21–23 °C by day
  • Sea 18 °C
  • 7.6 h of sun a day
  • 29 rainy days in all

Whanganui in autumn

Mar – May

26

Poor

  • 17–22 °C by day
  • Sea 17 °C
  • 5.5 h of sun a day
  • 31 rainy days in all

Whanganui in winter

Jun – Aug

11

Poor

  • 14 °C by day
  • Sea 14 °C
  • 4.2 h of sun a day
  • 39 rainy days in all

Which month for what?

Beach & swimming

No month

Sea from 21 °C, warm and mostly dry

Sightseeing & hiking

Jan – May, Nov

15–28 °C and not too much rain

Rainy months

Jun – Oct, Dec

Rainy season or more than 12 rainy days

Find your perfect month

Tell us what you like and we rate every month in Whanganui for you.

Swimming in the sea
Sunshine
Little rain

Your best months: January – February

Based on the climate averages; tap a month to see its details.

Your holiday weather, at a glance

Weather in October

Weather in October

16

Holiday weather in October

Poor

Best time to visit: February

Keep in mindFrequent rain

A typical day in October

  1. Morning, 08:00: about 11°
  2. Midday, 13:00: about 16°
  3. Afternoon, 16:00: about 17°
  4. Evening, 20:00: about 14°
  5. Night, 23:00: about 12°

06:3319:38

Cool evenings: pack a jumper or a jacket.

Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.

Light for photos in October

Golden hour
Morning 06:16–07:09 · evening 19:02–19:55
Blue hour
Morning 06:05–06:16 · evening 19:55–20:05

Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.

October in Whanganui compared with home

Home:

Loading the climate at home …

Early or late October?

In October, daytime highs rise from about 16° at the start of the month to 18° at the end. The sea warms from 14° to 15°. The days get 1.2 h longer.

Early or late October?
October1 Oct31 Oct
Daytime high16°18°
Night-time low9°10°
Sea14°15°
Daylight12.5 h13.7 h

What is the weather like in Whanganui in October?

In October, Whanganui is mild: daytime highs average 17 °C, and nights cool down to about 9 °C. The sea averages 14.1 °C – swimming is only for the hardy. Expect around 6.0 hours of sunshine a day. It rains often – on about 14 days, adding up to 104 mm. All in all, October is not an ideal month for a holiday in Whanganui.

More details for October

Daylight
13 h 4 min06:33 – 19:38
UV index
7 · highclear sky, noon (estimate)All months
Muggy days
0 daysdew point 18 °C or moreAll months
Wind
28 km/haverage daily peakAll months
Cloud cover
61 %on averageAll months
Hot days
0 days30 °C or more
Time zone
UTC+13offset from UTC

How the score comes together

  • Temperatureweight 35 %0 %
  • Seaweight 25 %0 %
  • Sunshineweight 20 %50 %
  • Few rainy daysweight 20 %29 %

Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.

What to pack in October

  • Sunscreen
  • Sunglasses & sun hat
  • A jumper for the evenings
  • Rain jacket or umbrella

Compare two months in Whanganui

Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.

vs

February has the better holiday weather in Whanganui: score 60 against 16. In February, days are 6 °C warmer than in October. The sea is 5 °C warmer in February. February has 6 fewer rainy days. The sun shines 2 hours longer a day in February.

October vs February, Whanganui
MonthOctoberFebruary
Holiday weather score1660better
Daytime high17°23°
Night-time low9°14°
Sea14.1°18.9°
Sunshine6.0 h7.8 hbetter
Rainy days148better
Rainfall104 mm66 mmbetter
Muggy days0better1

Based on the climate averages 1996–2025.

Whanganui month by month

The typical weather for every month at a glance.

52January22° · Sea 18° · 7.8 h

In January, Whanganui is warm: daytime highs average 22 °C, and nights cool down to about 14 °C. The sea averages 18.0 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7.8 hours a day. Rain falls on about 9 days, adding up to 69 mm. All in all, January is a so-so month for a holiday in Whanganui.

Whanganui in January
60February23° · Sea 19° · 7.8 h

In February, Whanganui is warm: daytime highs average 23 °C, and nights cool down to about 14 °C. The sea averages 18.9 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7.8 hours a day. Rain falls on about 8 days, adding up to 66 mm. All in all, February is a good month for a holiday in Whanganui.

Whanganui in February
45March22° · Sea 18° · 6.7 h

In March, Whanganui is warm: daytime highs average 22 °C, and nights cool down to about 13 °C. The sea averages 18.3 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 6.7 hours a day. Rain falls on about 9 days, adding up to 65 mm. All in all, March is a so-so month for a holiday in Whanganui.

Whanganui in March
20April19° · Sea 17° · 5.4 h

In April, Whanganui is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. The sea averages 17.4 °C – bracing, so a wetsuit helps for longer swims. Expect around 5.4 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 85 mm in total. All in all, April is not an ideal month for a holiday in Whanganui.

Whanganui in April
14May17° · Sea 16° · 4.4 h

In May, Whanganui is mild: daytime highs average 17 °C, and nights cool down to about 9 °C. The sea averages 16.1 °C – swimming is only for the hardy. Expect around 4.4 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 87 mm in total. All in all, May is not an ideal month for a holiday in Whanganui.

Whanganui in May
10June14° · Sea 14° · 3.7 h

In June, Whanganui is cool: daytime highs average 14 °C, and nights cool down to about 7 °C. The sea averages 14.4 °C – swimming is only for the hardy. The sun is scarce, with only about 3.7 hours a day. Rain is frequent, with about 13 rainy days and 95 mm in total. All in all, June is not an ideal month for a holiday in Whanganui.

Whanganui in June
11July14° · Sea 13° · 4.1 h

In July, Whanganui is cool: daytime highs average 14 °C, and nights cool down to about 6 °C. The sea averages 13.3 °C – swimming is only for the hardy. Expect around 4.1 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 97 mm in total. All in all, July is not an ideal month for a holiday in Whanganui.

Whanganui in July
13August14° · Sea 13° · 4.9 h

In August, Whanganui is cool: daytime highs average 14 °C, and nights cool down to about 6 °C. The sea averages 12.9 °C – swimming is only for the hardy. Expect around 4.9 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 96 mm in total. All in all, August is not an ideal month for a holiday in Whanganui.

Whanganui in August
16September16° · Sea 13° · 5.6 h

In September, Whanganui is cool: daytime highs average 16 °C, and nights cool down to about 8 °C. The sea averages 13.3 °C – swimming is only for the hardy. Expect around 5.6 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 89 mm in total. All in all, September is not an ideal month for a holiday in Whanganui.

Whanganui in September
16October17° · Sea 14° · 6.0 h

In October, Whanganui is mild: daytime highs average 17 °C, and nights cool down to about 9 °C. The sea averages 14.1 °C – swimming is only for the hardy. Expect around 6.0 hours of sunshine a day. It rains often – on about 14 days, adding up to 104 mm. All in all, October is not an ideal month for a holiday in Whanganui.

Whanganui in October
22November19° · Sea 15° · 6.9 h

In November, Whanganui is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. The sea averages 15.3 °C – swimming is only for the hardy. The sun shines for around 6.9 hours a day. Rain is frequent, with about 12 rainy days and 79 mm in total. All in all, November is not an ideal month for a holiday in Whanganui.

Whanganui in November
32December21° · Sea 17° · 7.2 h

In December, Whanganui is mild: daytime highs average 21 °C, and nights cool down to about 13 °C. The sea averages 16.9 °C – swimming is only for the hardy. The sun shines for around 7.2 hours a day. Rain is frequent, with about 13 rainy days and 101 mm in total. All in all, December is not an ideal month for a holiday in Whanganui.

Whanganui in December

Climate in detail

Year & climate table

Climate through the year

Long-term monthly averages. Tap a month to see its details.

Best time to visit

Nights and sleep in Whanganui

How warm the nights get in each month, from the mean night-time low. Tap a month for details.

  • Cold 0–8°
  • Cool 8–15°

CoolOctober: nights around 9°. A duvet at night and a jumper for the evening.

The coolest nights are in July (6°), the warmest in February (14°). Nights fall below 8 °C on average from June to August, so the room should be heated.

Temperatures through the year

Average daytime high, night-time low and sea temperature per month.

OctoberDay 17°Night 9°Sea 14°
DayNightSea
MonthScoreDayNightSeaSunRain daysRain mm
JanuaryJan5222°14°18.0°7.8 h969
FebruaryFeb6023°14°18.9°7.8 h866
MarchMar4522°13°18.3°6.7 h965
AprilApr2019°11°17.4°5.4 h1185
MayMay1417°9°16.1°4.4 h1287
JuneJun1014°7°14.4°3.7 h1395
JulyJul1114°6°13.3°4.1 h1397
AugustAug1314°6°12.9°4.9 h1396
SeptemberSep1616°8°13.3°5.6 h1389
OctoberOct1617°9°14.1°6.0 h14104
NovemberNov2219°11°15.3°6.9 h1279
DecemberDec3221°13°16.9°7.2 h13101

Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences

39.93° S, 175.05° E · 18 m · Pacific/Auckland

Sea temperature
Swimming calendar

Sea temperature in Whanganui

Monthly sea surface temperature with the range of cooler and warmer years.

Sea in October14.1°Ccold

8 in 10 years: 13.5 – 14.6 °C

Swimming season: Always below 20 °C

  • cold
  • fresh
  • refreshing
  • pleasant
  • warm
  • very warm
OctoberMean sea temperature 14.1°8 in 10 years 13.5° – 14.6°
20°
Mean sea temperature8 in 10 years20 °C – comfortable for swimming

The sea temperature in Whanganui ranges from 12.9 °C in August to 18.9 °C in February. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.

In June the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in February, eight out of ten years were between 17.9 and 20.3 °C.

Sea temperature by month
MonthAverageCool yearWarm yearFeels
JanuaryJan18.0°16.7°19.7°fresh
FebruaryFeb18.9°17.9°20.3°fresh
MarchMar18.3°17.3°19.5°fresh
AprilApr17.4°16.5°18.4°fresh
MayMay16.1°15.4°16.9°cold
JuneJun14.4°13.9°15.3°cold
JulyJul13.3°12.4°14.1°cold
AugustAug12.9°12.4°13.6°cold
SeptemberSep13.3°12.9°13.8°cold
OctoberOct14.1°13.5°14.6°cold
NovemberNov15.3°14.3°16.4°cold
DecemberDec16.9°15.6°18.6°cold
Sunshine
Sunshine

Sunshine hours in Whanganui

Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.

Per year
2,140 hours
Sunniest month
Jan · 7.8 h a day
Least sunshine
Jun · 3.7 h a day
OctoberSunshine 6.0 hDaylight 13.1 hShare of daylight 46 %
SunshineDaylight

In October, the sun shines for about 6.0 of 13.1 hours of daylight in Whanganui, 46 % of the daylight hours.

Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.

Rain
Rain

Rain in Whanganui: rainy days and rainfall

A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.

Per year
1,032 mm on 138 days
Wettest month
Oct · 104 mm
Driest month
Mar · 65 mm
OctoberRainy days 14Rainfall 104 mm

In October, Whanganui has about 14 rainy days with 104 mm of rain in total.

UV index
Sun protection

UV index in Whanganui

How strong the sun is at noon, month by month, and how quickly unprotected skin burns.

Clear-sky UV in October
7 · highSeek shade around midday; sunscreen SPF 30+, hat and sunglasses.

The sun is strongest in December (UV 10).

Minutes until sunburn in October

Very fair skin
about 20 min
Fair skin
about 25 min
Light brown skin
about 30 min
Olive skin
about 40 min

Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.

Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.

Wind & clouds
Wind & clouds

Wind and clouds in Whanganui

How breezy and how cloudy Whanganui is through the year. Tap a month to select it on the whole page.

Wind

Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.

Year average
24 km/h · moderate breeze
Windiest month
Oct · 28 km/h
Calmest month
Apr · 22 km/h
OctoberWind 28 km/hBeaufort 4
20
WindBeaufort 4

In October, the wind in Whanganui typically peaks at 28 km/h during the day: Beaufort 4, moderate breeze.

Breezy months for windsurfing and kiting

From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting, and here it is that strong all year.

Clouds

Average share of the sky covered by cloud, day and night.

Year average
59 % · variable cloud
Clearest month
Feb · 54 %
Cloudiest month
Dec · 62 %
OctoberCloud cover 61 %Sunshine 6.0 h

In October, cloud covers on average 61 % of the sky over Whanganui: variable cloud, with about 6.0 hours of sunshine a day.

Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.

Planning a trip to Whanganui

Weather for your travel dates

Pick your arrival and length of stay, and we sum up the weather to expect.

Whanganui in the school holidays

How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.

Whanganui has its best school-holiday weather during the Christmas holidays (score 42) and its weakest during the summer holidays (score 12).

  • Easter holidays

    Mar – Apr

    28

    Poor

    • 20 °C by day
    • Sea 18 °C
    • 5.8 h of sun a day
    • 10 rainy days a month

    Good for: Sightseeing & walks

  • May half-term

    May – Jun

    13

    Poor

    • 16 °C by day
    • Sea 16 °C
    • 4.3 h of sun a day
    • 12 rainy days a month

    Good for: Sightseeing & walks

  • Summer holidays

    Jul – Aug

    12

    Poor

    • 14 °C by day
    • Sea 13 °C
    • 4.6 h of sun a day
    • 13 rainy days a month

    Keep in mind: Frequent rain

  • October half-term

    Oct

    16

    Poor

    • 17 °C by day
    • Sea 14 °C
    • 6.0 h of sun a day
    • 14 rainy days a month

    Keep in mind: Frequent rain

  • Christmas holidays

    Dec – Jan

    42

    FairBest holidays

    • 22 °C by day
    • Sea 17 °C
    • 7.5 h of sun a day
    • 11 rainy days a month

    Keep in mind: Frequent rain

Based on the climate averages 1996–2025.

Getting there

Flying from

Nonstop flight
about 23 h
Distance
18,690 km
Time zone
UTC+13
Jet lag
About 12 days (12 h east)

Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.

Most routes need a change of planes, which adds time.

Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.

Good to know: New Zealand

Currency
New Zealand Dollar (NZD)
Languages
English, Māori
Sockets
Type I · 230 V
Traffic
Drives on the left
Dialling code
+64
Emergency number
111

UK plugs need a travel adapter

Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.

Compare & alternatives

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Whanganui compared

Put Whanganui side by side with another destination.

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Whanganui vs Palmerston North

In October the holiday weather in Whanganui and Palmerston North is about equally good (score 16 vs 16). During the day it is about as warm in Palmerston North as in Whanganui.

Whanganui vs Palmerston North, in October
in OctoberWhanganuiPalmerston North
Holiday weather score1616
Daytime high17°17°
Sea14°no sea nearby
Sunshine6 h6 h
Rainy days1414
Best timeFebNov – Apr

Through the year

OctoberWhanganui 17°Palmerston North 17°
WhanganuiPalmerston North
Go to Palmerston North
Best places in the country
Ranking

New Zealand in October: the best places

In October, Whanganui ranks 24 among the 31 nearest destinations in this country.

  1. Hastings19°82
  2. 2Blenheim18°74
  3. 3Tauranga18°16°74
  4. 4Auckland18°16°71
  5. 5Masterton17°69
  6. 6Cambridge18°69
  7. 7Matamata18°69
  8. 8Rotorua18°68
  9. 24WhanganuiThis page17°14°16
All destinations: New Zealand
Places nearby

Near Whanganui

Other destinations close by.

Places with a similar climate

Places with a climate like Whanganui

Destinations whose weather through the year is closest to Whanganui's – good alternatives.

  1. 87 % similar16MotuekaNew Zealand17°14°Best time: Feb
  2. 84 % similar18Apollo BayAustralia18°14°Best time: Jan – Feb
  3. 83 % similar19NelsonNew Zealand17°14°Best time: Feb
  4. 81 % similar13RaglanNew Zealand17°16°Best time: Feb

Frequently asked questions about Whanganui

When is the best time to visit Whanganui?

The best time to visit Whanganui is in February. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.

How warm is the sea in Whanganui?

The sea temperature in Whanganui ranges from 12.9 °C in August to 18.9 °C in February. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.

Can you swim in Whanganui in October?

Only if you don't mind cold water: in October the sea averages just 14.1 °C. Comfortable swimming temperatures are not reached at any time of year.

What is the warmest month in Whanganui?

February is the warmest month, with average highs of 23 °C and nights around 14 °C. July is the coolest month at 14 °C.

When does it rain most in Whanganui?

Rain is frequent from June to October and in December; the wettest month is October with 104 mm. The driest month is March with 65 mm.

How many hours of sunshine does Whanganui get?

Whanganui gets around 2,140 hours of sunshine a year. The sunniest month is January with 7.8 hours a day; in June there are 3.7 hours a day.

What time zone is Whanganui in?

Whanganui is on UTC+13 in January and UTC+12 in July.

How long is the flight from London to Whanganui?

A nonstop flight from London to Whanganui takes about 23 h, for a straight-line distance of about 18,690 km. Most routes need a change of planes, which adds time.

Which school holidays are best for Whanganui?

Whanganui has its best school-holiday weather during the Christmas holidays (score 42) and its weakest during the summer holidays (score 12). Holiday ratings (0–100): Easter holidays 28, May half-term 13, summer holidays 12, October half-term 16, Christmas holidays 42.