Greymouth weekend weather
This weekend in Greymouth, New Zealand, model by model. Weekend forecasts are far enough out that the models often split — so we show you where.
Weekend
The models centre on about 10° across the weekend. Agreement is medium — plausible, but worth re-checking closer to the day.
Sat
2026-08-01 — every model, side by sideEuropeanECMWF
10°
Mostly clear
AmericanNOAA GFS
10°
Cloudy
GermanDWD ICON
10°
Partly cloudy
All 3 models land within under a degree of each other for this day — that is a forecast you can plan on.
Sun
2026-08-02 — every model, side by sideEuropeanECMWF
11°
Cloudy
AmericanNOAA GFS
11°
Cloudy
GermanDWD ICON
11°
Fog
All 3 models land within 1° of each other for this day — that is a forecast you can plan on.
Where the models disagree
temperature and rain, judged separatelyThe 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.
Common questions
Will it rain this weekend?
The models are not currently showing a high weekend rain risk, and they broadly agree with each other.
How reliable is a weekend forecast?
It depends how far away the weekend is. Forecast error grows steadily with lead time, so a Saturday forecast made on Friday is far stronger than one made the previous Monday. The honest signal is model agreement: when they converge the forecast is solid, and when they spread the weekend is genuinely uncertain.