Whyalla in Winter
In winter (June, July and August), Whyalla sees average daytime highs around 18°C and overnight lows near 8°C, with 64 mm of rain over about 14 wet days across the season. It is the coldest season of the year and the 3rd-wettest season.
Over the season highs climb from about 18°C in early June to 20°C by late August. The sky is clear or mostly clear about 38% of the time across winter, and the air most often feels dry.
Winter is Whyalla's 3rd-best season to visit on our travel score. For the whole year in context, see Whyalla's year-round climate.
- Avg daytime high
- 18°C
- coldest season of the year
- Avg overnight low
- 8°C
- Rainfall
- 64 mm
- 14 wet days
- Avg wind
- 13 km/h
- Travel score
- 6.5
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Whyalla in Winter
Over the season highs climb from about 18°C in early June to 20°C by late August.
A typical winter day in Whyalla reaches about 18°C and drops to 8°C overnight. The warmest of the three months is August, the coolest July.
Whyalla weather by month
How the three winter months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 18° | 20 | 2.6 | 13.9 | 5.3 |
| Feb | 31° / 18° | 21 | 2 | 13.2 | 5.8 |
| Mar | 28° / 16° | 13 | 2.3 | 12.3 | 7.2 |
| Apr | 25° / 13° | 19 | 3 | 11.2 | 8.2 |
| May | 20° / 10° | 19 | 3.8 | 10.3 | 7.4 |
| Jun | 17° / 8° | 25 | 4.9 | 9.9 | 6.3 |
| Jul | 17° / 7° | 19 | 4.2 | 10 | 6.3 |
| Aug | 19° / 7° | 20 | 5 | 10.8 | 7.0 |
| Sep | 22° / 9° | 28 | 4.7 | 11.8 | 7.7 |
| Oct | 25° / 12° | 22 | 3.7 | 12.8 | 8.1 |
| Nov | 28° / 14° | 24 | 3.7 | 13.7 | 7.2 |
| Dec | 30° / 16° | 30 | 4.1 | 14.1 | 6.1 |
Cloud cover in Winter
The sky is clear or mostly clear about 38% of the time across winter.
Chance of precipitation in Winter
Whyalla gets around 64 mm of rain over 14 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 13 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 hours in early June to 11 h 12 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 2.8 kWh/m².
Hazard calendar for Whyalla
None of Whyalla's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Whyalla sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Is winter a good time to visit Whyalla?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Whyalla for sightseeing.
What to pack for Whyalla in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Whyalla sees daytime highs around 18°C and nights near 8°C. Worth packing: a warm layer. About 14 days see rain.
Sea temperature near Whyalla in Winter
The nearest coast averages about 14°C across winter — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 23 | 23 | 22 | 20 | 18 | 15 | 14 | 13 | 15 | 17 | 19 | 21 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Cool | Cool | Bracing | Bracing | Bracing | Cool | Cool | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 23 | Refreshing |
| Feb | 23 | Refreshing |
| Mar | 22 | Refreshing |
| Apr | 20 | Refreshing |
| May | 18 | Cool |
| Jun | 15 | Cool |
| Jul | 14 | Bracing |
| Aug | 13 | Bracing |
| Sep | 15 | Bracing |
| Oct | 17 | Cool |
| Nov | 19 | Cool |
| Dec | 21 | Refreshing |
UV index in Whyalla in Winter
Clear-sky midday UV across winter averages around 3 — enough to warrant sun protection. 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 12 | 10 | 6 | 3 | 3 | 3 | 4 | 6 | 8 | 11 | 13 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 12 | Extreme |
| Mar | 10 | Very high |
| Apr | 6 | High |
| May | 3 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 8 | Very high |
| Nov | 11 | Extreme |
| Dec | 13 | Extreme |
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.
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.
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
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.