Whyalla weather in January

In January, Whyalla sees average daytime highs of 31°C and overnight lows near 18°C, with 20 mm of rain across 2.6 wet days and about 13.9 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 65% of the time in January, and the air most often feels dry.

Daylight stretches from about 14 h 06 min at the start of January to 13 h 36 min by month's end. Set against the rest of the year, January is Whyalla's 1st-clearest and 1st-windiest month. For the whole year in context, see Whyalla's year-round climate.

Daytime high
31°
1st warmest
Overnight low
18°
12th coldest
Rainfall
20 mm
2.6 wet days
Daylight
14 hours
6:30 AM – 8:28 PM
Cloud cover
32%
1st clearest
Wind
17 km/h
1st windiest
Solar energy
7.95 kWh/m²
Travel score
5.3
out of 10

Whyalla is city in South Australia.

Air quality
Good
PM10 22.2 µg/m³ · 2019
Founded
1901

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical January day in Whyalla reaches about 31°C in the afternoon and slips back to 18°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 41°C. Set against its neighbours, January runs about 2°C warmer than December and on par with February.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
13118
23118
33118
43118
53118
63118
73118
83118
93218
103218
113218
123218
133218
143218
153218
163218
173219
183219
193219
203219
213219
223219
233219
243119
253119
263119
273119
283119
293119
303119
313119

Whyalla weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 18°202.613.95.3
Feb31° / 18°21213.25.8
Mar28° / 16°132.312.37.2
Apr25° / 13°19311.28.2
May20° / 10°193.810.37.4
Jun17° / 254.99.96.3
Jul17° / 194.2106.3
Aug19° / 20510.87.0
Sep22° / 284.711.87.7
Oct25° / 12°223.712.88.1
Nov28° / 14°243.713.77.2
Dec30° / 16°304.114.16.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of January, with mostly cloudy or overcast conditions the remaining 24%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27921
37822
47822
57822
67822
77723
87624
97624
107624
117624
127624
137624
147525
157525
167525
177525
187624
197624
207525
217525
227525
237525
247525
257525
267525
277525
287525
297525
307525
317525

Chance of precipitation in January

Any precipitation

Whyalla gets around 20 mm of rain over 2.6 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 8% and peaks near 9% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
17
27
37
47
58
68
78
88
98
108
118
128
138
148
158
169
179
189
199
209
219
229
239
249
259
269
279
289
299
309
319

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 63% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
17718410
27419520
37320520
47221520
57021621
66922621
76922621
86822721
96822721
106722821
116623821
126423931
136423931
146423931
1562241031
1662241031
1761251031
1860261031
1960261031
2058271131
2158271131
2257281131
2357281131
2456291131
2556291131
2656291131
2756291131
2856291131
2956291131
3056291131
3157281131

Wind in January

Winds average 17 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 14 h 06 min at the start of January to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over January. Sunrise moves from 6:19 AM to 6:44 AM, and sunset from 8:27 PM to 8:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.16:198:27
214.16:198:28
314.16:208:28
414.16:218:28
514.16:218:28
614.16:228:28
714.16:238:28
814.16:248:28
914.16:248:28
1014.16:258:28
1114.06:268:28
1214.06:278:28
1314.06:288:28
1414.06:298:28
1514.06:298:28
1614.06:308:28
1713.96:318:28
1813.96:328:27
1913.96:338:27
2013.96:348:27
2113.96:358:27
2213.86:368:26
2313.86:378:26
2413.86:378:26
2513.86:388:25
2613.86:398:25
2713.76:408:24
2813.76:418:24
2913.76:428:23
3013.76:438:23
3113.66:448:22

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 7.95 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.45 kWh/m² to a high of 7.95 kWh/m² in January across the year — January's 7.95 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.3Intense
28.3Intense
38.2Intense
48.2Intense
58.2Intense
68.2Intense
78.1Intense
88.1Intense
98.0Intense
108.0Intense
118.0Intense
127.9Intense
137.9Intense
147.9Intense
157.8Intense
167.8Intense
177.8Intense
187.8Intense
197.7Intense
207.7Intense
217.7Intense
227.7Intense
237.7Intense
247.6Intense
257.6Intense
267.6Intense
277.5Intense
287.5Intense
297.5Intense
307.5Intense
317.4Intense
Planning a trip in January

Hazard calendar for Whyalla

In seasonPeak

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

Whyalla 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 January a good time to visit Whyalla?

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

5.3
Sightseeing
12th-best month of the year
8.1
Beach & pool
4th-best month of the year

January is a reasonable time to visit Whyalla for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Whyalla in January

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

In January, Whyalla sees daytime highs around 31°C and nights near 18°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Whyalla in January

The nearest coast averages about 23°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in February at about 23°C and coldest in August near 13°C.

It's comfortable for a long swim from Nov 28 to Apr 16 — about 4.6 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan23Refreshing
Feb23Refreshing
Mar22Refreshing
Apr20Refreshing
May18Cool
Jun15Cool
Jul14Bracing
Aug13Bracing
Sep15Bracing
Oct17Cool
Nov19Cool
Dec21Refreshing

UV index in Whyalla in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Whyalla peaks around January 1 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 1UV 13Jul 12UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Very high
Apr6High
May3Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec13Extreme
Location & terrain

Where is Whyalla?

Whyalla sits at 33.0°S, 137.6°E, 20 m above sea level, in Australia. The nearest listed city is Gawler, 206 km away.

ParalowieParafield GardensAdelaideAdelaide city centreAdelaide HillsMorphett ValeMount Barker

Topography around Whyalla

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

Within 3 km, the terrain around Whyalla has only modest variations in elevation — a maximum elevation change of 63 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 169 m; within 80 km, large variations in elevation — a maximum elevation change of 946 m.

The land around Whyalla is covered by artificial surfaces (32%) within 3 km, water (45%), grassland (26%) and shrubs (21%) within 16 km, and grassland (33%) and water (22%) within 80 km.

3 km
63 m
16 km
169 m
80 km
946 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
January weather nearby: Gawler 206 km · Paralowie 215 km · Parafield Gardens 217 km · Adelaide 231 km · Adelaide city centre 232 km · Adelaide Hills 234 km · Morphett Vale 249 km · Mount Barker 256 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 Whyalla (-33.0327°, 137.5648°, elevation 20 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).