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CheckWeather NZGreymouth
Forecast confidence: High · models disagree by 2°C

Greymouth weather

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Showers,rain likely tomorrow

European, the American and the German model agree on a high near 13° in Greymouth today. Tomorrow looks heavy drizzle around 12°, with a 100% chance of rain.

13°10°
12°
13°
13°
12°
13°
Todaymodels agreeTomorrowmodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaymodels agreeThursdaymodels agree
EuropeanECMWF
12°
Light rain
Today 12°·Low 10°·Rain 100%
AmericanNOAA GFS
12°
Showers
Today 12°·Low ·Rain 100%
GermanDWD ICON
14°
Showers
Today 14°·Low 11°·Rain 100%
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Greymouth weather in numbers

from 30 years of measured normals

Greymouth swings 16°C across the year, from 21°C highs in January to 5°C lows in July, and September is usually the wettest month in a year that brings about 3019 mm of precipitation.

Warmest month
January
21°C average high
Coldest month
July
5°C average low
Wettest month
September
3019 mm a year
Below freezing
Never
overnight lows stay above 0°C
Comfortable
4 months
January, February, March and April
Residents
9,419
share this forecast

The weather map: all three models at once

European, American, German side by side around Greymouth and nearby towns.Live rain radar →
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Greymouth hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Greymouth 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Showers
13° 10°
models agree
Tomorrow
Heavy drizzle
12°
models agree
Mon
Drizzle
13°
models agree
Tue
Showers
13°
models agree
Wed
Mostly clear
12°
models agree
Thu
Light drizzle
13°
models agree
Fri
Heavy drizzle
13°
±3°
Sat
Drizzle
12°
models agree
Sun
Light rain
14°
±3°
Mon
Cloudy
13°
models agree
Tue
Light drizzle
11°
±2°
Wed
Light rain
14° 10°
models agree
Thu
Light drizzle
14°
models agree
Fri
Light drizzle
15°
models agree

Greymouth, New Zealand is at its warmest in Jan (average highs near 21°C) and coldest in Jul (lows around 5°C), with roughly 3019 mm of precipitation across the year. Below, compare what European, American, German forecast for Greymouth right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in New Zealand before you trust any single number.

Greymouth climate by month

average daytime high and overnight low across a typical year
Jan
21°
14°
Feb
20°
12°
Mar
17°
11°
Apr
17°
May
14°
Jun
13°
Jul
12°
Aug
12°
Sep
14°
Oct
15°
Nov
16°
Dec
19°
12°

Which forecast is most accurate in Greymouth?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
94
/100rank #1
97±0.1°C98±1.2 km/t8994% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
84
/100rank #2
79±1.2°C93±3.7 km/t8290% hitNOAA / NCEP (United States)College Park, Maryland, USA
G
German
83
/100rank #3
84±0.9°C83±8.3 km/t8290% hitDeutscher Wetterdienst (DWD)Offenbach am Main, Germany

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 244 cities. Lower error means a higher score. See which forecast model is most accurate in New Zealand, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in New Zealand? Give each 1 to 5 stars.

EuropeanECMWF
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AmericanNOAA GFS
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GermanDWD ICON
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±2°12° to 14°models agree100% to 100% chance
Tomorrow±1°11° to 13°±2%98% to 100% chance
Mon±1°13° to 13°±59%24% to 83% chance
Tue±1°12° to 14°±5%95% to 100% chance
Wedmodels agree12° to 12°±28%45% to 73% chance

The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Greymouth

today, local time
Sunrise
06:30
Sunset
18:28
Daylight
11h 58m

Common questions

What's the weather in Greymouth today?
On this page we show what European, American, German each forecast for Greymouth today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Greymouth today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from European, American, German for Greymouth and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Greymouth?
Over the last 30 days, the European model has been the most accurate for Greymouth (CheckWeather Score 94/100), ahead of the American at 84. We grade every model against the recorded weather. See the NZ accuracy scoreboard for the full method.
What is the warmest month in Greymouth?
January is typically the warmest month in Greymouth, with average highs around 21°C.
How cold does Greymouth get?
The coldest month in Greymouth is July, when overnight lows average about 5°C.
How much rain does Greymouth get?
Greymouth sees roughly 3019 mm of precipitation a year, with September usually the wettest month.

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