Greymouth, New Zealand climate

Cfb Oceanic / temperate

Greymouth has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is January with an average daily high near 72°F, while the coldest is July averaging around 33°F at night. Precipitation is fairly even year-round, totalling about 22 inches.

☀️ Summers

Mild

Highs near 72°F in January.

❄️ Winters

Chilly

Lows near 33°F in July.

🌧️ Rain

Fairly dry

About 22 in of rain a year.

Wettest in June

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Greymouth climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	72	72	68	63	58	53	52	54	59	62	66	70
Avg temp (°F)	62	62	59	53	49	44	43	45	48	52	56	60
Avg low (°F)	52	52	49	43	39	34	33	36	38	41	45	50
Precipitation (in)	1.5	1.3	1.6	2.0	2.1	2.6	2.1	2.0	1.4	1.8	1.6	1.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	72	72	68	63	58	53
Avg temp (°F)	62	62	59	53	49	44
Avg low (°F)	52	52	49	43	39	34
Precipitation (in)	1.5	1.3	1.6	2.0	2.1	2.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	52	54	59	62	66	70
Avg temp (°F)	43	45	48	52	56	60
Avg low (°F)	33	36	38	41	45	50
Precipitation (in)	2.1	2.0	1.4	1.8	1.6	1.7

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	69	65	66	67	64	68	66	68	69	70	71	72
Relative humidity (%)	66	68	72	79	84	88	88	86	82	78	73	69
Wind speed (mph)	7.2	6.7	6.3	5.7	5.5	5.4	5.2	5.7	6.2	6.6	6.9	7.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	69	65	66	67	64	68
Relative humidity (%)	66	68	72	79	84	88
Wind speed (mph)	7.2	6.7	6.3	5.7	5.5	5.4

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	66	68	69	70	71	72
Relative humidity (%)	88	86	82	78	73	69
Wind speed (mph)	5.2	5.7	6.2	6.6	6.9	7.1

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Christchurch Aero Aws, a weather station, about 156 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →