Geraldton weather in December

In December, Geraldton sees average daytime highs of 25°C and overnight lows near 20°C, with 4 mm of rain across 0.9 wet days and about 13.8 hours of daylight. It is the 4th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 26°C by the end. The sky is clear or mostly clear about 81% of the time in December, and the air most often feels humid.

Daylight stretches from about 13 h 42 min at the start of December to 13 h 48 min by month's end. Set against the rest of the year, December is Geraldton's 2nd-clearest and 1st-windiest month. For the whole year in context, see Geraldton's year-round climate.

Daytime high
25°
4th warmest
Overnight low
20°
9th coldest
Rainfall
4 mm
0.9 wet days
Daylight
13 h 48 min
5:23 AM – 7:12 PM
Cloud cover
20%
2nd clearest
Wind
27 km/h
1st windiest
Solar energy
8.3 kWh/m²
Travel score
9.1
out of 10

Geraldton is city in Western Australia.

Air quality
Good
PM10 18.8 µg/m³ · 2016
Density
152/km²
people per km²
Founded
1850

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 26°C by the end.

A typical December day in Geraldton reaches about 25°C in the afternoon and slips back to 20°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 30°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12419
22419
32419
42419
52419
62419
72419
82419
92419
102420
112420
122520
132520
142520
152520
162520
172520
182520
192520
202520
212520
222520
232520
242520
252520
262621
272621
282621
292621
302621
312621

Geraldton weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 21°71.113.68.9
Feb27° / 22°101.4138.4
Mar27° / 22°131.412.28.5
Apr25° / 20°152.611.38.5
May22° / 17°384.810.68.0
Jun20° / 15°567.610.27.1
Jul19° / 14°587.810.46.8
Aug19° / 14°376.6117.1
Sep20° / 15°224.611.87.5
Oct21° / 16°102.312.78.3
Nov23° / 18°81.613.48.8
Dec25° / 20°40.913.89.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 81% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 8% of December, with mostly cloudy or overcast conditions the remaining 11%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18614
28614
38614
48713
58713
68713
78713
88713
98713
108812
118812
128812
138911
148911
158911
168911
179010
189010
199010
209010
219010
22919
23919
24928
25928
26928
27928
28928
29928
30928
31928

Chance of precipitation in December

Any precipitation

Geraldton gets around 4 mm of rain over 0.9 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 3% and peaks near 4% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
13
23
33
43
53
64
74
84
94
104
114
124
134
144
154
164
173
183
193
203
212
222
232
242
252
262
272
282
292
302
312

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the humid band about 38% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
123462740
222462750
322462750
421462760
520462860
619452970
719443080
818433180
916423290
10154134100
11144035110
12133837120
13123738120
14113639130
15103640140
1693541150
1783442160
1883242171
1973243171
2073144181
2163044191
2262944191
2362945201
2462845211
2562745211
2662645221
2762544232
2862544242
2962444252
3062344252
3152244262

Wind in December

Winds average 27 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 26 km/h on the calmest days to 26 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
126breezy
226breezy
326breezy
426breezy
526breezy
626breezy
726breezy
826breezy
926breezy
1026breezy
1126breezy
1226breezy
1326breezy
1426breezy
1526breezy
1626breezy
1726breezy
1826breezy
1926breezy
2026breezy
2126breezy
2226breezy
2326breezy
2426breezy
2526breezy
2626breezy
2726breezy
2826breezy
2926breezy
3026breezy
3126breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 42 min at the start of December to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:20 AM to 5:30 AM, and sunset from 7:02 PM to 7:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:207:02
213.75:207:03
313.75:207:04
413.75:207:05
513.75:207:05
613.85:217:06
713.85:217:07
813.85:217:07
913.85:217:08
1013.85:217:09
1113.85:217:09
1213.85:227:10
1313.85:227:11
1413.85:227:11
1513.85:237:12
1613.85:237:12
1713.85:237:13
1813.85:247:14
1913.85:247:14
2013.85:247:15
2113.85:257:15
2213.85:257:16
2313.85:267:16
2413.85:267:17
2513.85:277:17
2613.85:277:17
2713.85:287:18
2813.85:297:18
2913.85:297:18
3013.85:307:19
3113.85:307:19

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 8.3 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.1 kWh/m² to a high of 8.3 kWh/m² in December across the year — December's 8.3 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.2Intense
28.2Intense
38.2Intense
48.2Intense
58.2Intense
68.2Intense
78.2Intense
88.2Intense
98.2Intense
108.2Intense
118.2Intense
128.3Intense
138.3Intense
148.3Intense
158.3Intense
168.3Intense
178.3Intense
188.3Intense
198.3Intense
208.4Intense
218.4Intense
228.4Intense
238.4Intense
248.4Intense
258.5Intense
268.5Intense
278.5Intense
288.5Intense
298.5Intense
308.5Intense
318.5Intense
Planning a trip in December

Hazard calendar for Geraldton

In seasonPeak

In December, Geraldton sits inside its cyclone season. The full year is below, with each hazard's peak months called out.

Geraldton sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Cyclone
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Geraldton?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

9.1
Sightseeing
1st-best month of the year
8.0
Beach & pool
4th-best month of the year

December is one of the better times to visit Geraldton for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Geraldton in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Geraldton sees daytime highs around 25°C and nights near 20°C. Pack sun protection. Worth having: light clothes and a windbreaker.

sun protectionlight clothesa windbreaker

Sea temperature near Geraldton in December

The nearest coast averages about 22°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in March at about 24°C and coldest in September near 19°C.

It's comfortable for a long swim from Oct 25 to Aug 4 — about 9.3 months when the water holds above 20°C.

18°20°22°24°26°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan23Refreshing
Feb23Refreshing
Mar24Refreshing
Apr23Refreshing
May22Refreshing
Jun21Refreshing
Jul21Refreshing
Aug20Cool
Sep19Cool
Oct20Cool
Nov21Refreshing
Dec22Refreshing

UV index in Geraldton in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Geraldton peaks around January 1 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighVery highExtremeJan 1UV 14Jun 23UV 4
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr7High
May5High
Jun4Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct11Extreme
Nov10Extreme
Dec14Extreme
Location & terrain

Where is Geraldton?

Geraldton sits at 28.8°S, 114.6°E, 15 m above sea level, in Australia. The nearest listed city is Ellenbrook, 357 km away.

EllenbrookDuncraigLandsdaleBallajuraScarboroughDianellaMorleyPerth

Topography around Geraldton

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Geraldton.

Within 3 km, the terrain around Geraldton has only modest variations in elevation — a maximum elevation change of 52 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 221 m; within 80 km, significant variations in elevation — a maximum elevation change of 318 m.

The land around Geraldton is covered by artificial surfaces (36%) and water (34%) within 3 km, water (53%) within 16 km, and water (48%) and cropland (35%) within 80 km.

3 km
52 m
16 km
221 m
80 km
318 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Ellenbrook 357 km · Duncraig 357 km · Landsdale 358 km · Ballajura 362 km · Scarborough 364 km · Dianella 366 km · Morley 367 km · Perth 373 km

Australia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type I
230 V · 50 Hz
Prices
≈ 90% of US
price level, 2025
GDP per capita
$65,130
2025
Happiness
6.9 / 10
World Happiness, 2025
Homicide rate
0.9
per 100k, 2023
Road deaths
4.9
per 100k/yr, 2019
Income group
High
World Bank
Religion
none 38%Roman Catholic 20%Protestant 18%other Christian 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Geraldton (-28.779°, 114.6146°, elevation 15 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).