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Geraldton, Western Australia climate

BSh Hot semi-arid

Geraldton has a mildly seasonal warm-temperate climate (Hot semi-arid, Köppen BSh). The hottest month is February with an average daily high near 91°F, while the coldest is July averaging around 49°F at night. Precipitation totals about 15 inches a year and is strongly seasonal — July alone averages 3.2 inches while December barely receives 0.17 inches.

☀️ Summers

Hot

Highs near 91°F in February.

About 63 days a year above 90 °F

❄️ Winters

Cool

Lows near 49°F in July.

🌧️ Rain

Fairly dry

About 15 in of rain a year.

Wettest in July

⛅ Sky & trend

Fairly sunny

More sun than cloud through the year.

+0.4 °F vs 50 years ago

Temperature & precipitation

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

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Geraldton climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	89	91	88	83	77	71	68	69	72	77	82	87
Avg temp (°F)	77	79	76	72	66	61	58	58	60	65	70	74
Avg low (°F)	65	67	64	60	55	51	49	48	48	52	57	62
Precipitation (in)	0.2	0.3	0.7	0.8	2.1	2.9	3.2	2.4	1.3	0.6	0.4	0.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	89	91	88	83	77	71
Avg temp (°F)	77	79	76	72	66	61
Avg low (°F)	65	67	64	60	55	51
Precipitation (in)	0.2	0.3	0.7	0.8	2.1	2.9

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	68	69	72	77	82	87
Avg temp (°F)	58	58	60	65	70	74
Avg low (°F)	49	48	48	52	57	62
Precipitation (in)	3.2	2.4	1.3	0.6	0.4	0.2

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	1	2	3	5	9	13	15	15	10	6	4	2
Days with high ≥ 90°F (days)	12	13	13	5	0.7	—	—	0.0	0.5	3	6	10
Days with low ≤ 32°F (days)	—	—	—	—	—	—	0.0	—	—	—	—	—

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	1	2	3	5	9	13
Days with high ≥ 90°F (days)	12	13	13	5	0.7	—
Days with low ≤ 32°F (days)	—	—	—	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	15	15	10	6	4	2
Days with high ≥ 90°F (days)	—	0.0	0.5	3	6	10
Days with low ≤ 32°F (days)	0.0	—	—	—	—	—

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	38	41	42	46	45	48	46	44	42	40	41	38
Clear days (≤ 30% cloud)	13	12	13	11	12	10	11	11	12	13	12	14
Partly cloudy days (30–70%)	13	12	12	12	11	12	13	13	12	12	13	12
Cloudy days (≥ 70%)	5	5	6	7	7	8	7	6	6	6	5	4
Relative humidity (%)	51	51	53	59	61	67	71	72	69	63	57	52
Wind speed (mph)	11.5	11.0	10.2	8.8	8.3	8.2	7.8	7.8	8.4	9.5	10.6	11.6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	38	41	42	46	45	48
Clear days (≤ 30% cloud)	13	12	13	11	12	10
Partly cloudy days (30–70%)	13	12	12	12	11	12
Cloudy days (≥ 70%)	5	5	6	7	7	8
Relative humidity (%)	51	51	53	59	61	67
Wind speed (mph)	11.5	11.0	10.2	8.8	8.3	8.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	46	44	42	40	41	38
Clear days (≤ 30% cloud)	11	11	12	13	12	14
Partly cloudy days (30–70%)	13	13	12	12	13	12
Cloudy days (≥ 70%)	7	6	6	6	5	4
Relative humidity (%)	71	72	69	63	57	52
Wind speed (mph)	7.8	7.8	8.4	9.5	10.6	11.6

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Geraldton Airport, a weather station, about 8 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 →