Whyalla weather in December
In December, Whyalla sees average daytime highs of 30°C and overnight lows near 16°C, with 30 mm of rain across 4.1 wet days and about 14.1 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.
Highs climb over the month, from about 29°C in the first days to 31°C by the end. The sky is clear or mostly clear about 55% of the time in December, and the air most often feels dry.
Daylight stretches from about 14 hours at the start of December to 14 h 12 min by month's end. Set against the rest of the year, December is Whyalla's 4th-clearest and 2nd-windiest month. For the whole year in context, see Whyalla's year-round climate.
- Daytime high
- 30°
- 3rd warmest
- Overnight low
- 16°
- 10th coldest
- Rainfall
- 30 mm
- 4.1 wet days
- Daylight
- 14 h 12 min
- 6:11 AM – 8:21 PM
- Cloud cover
- 40%
- 4th clearest
- Wind
- 16 km/h
- 2nd windiest
- Solar energy
- 7.68 kWh/m²
- Travel score
- 6.1
- 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 December
Highs climb over the month, from about 29°C in the first days to 31°C by the end.
A typical December day in Whyalla reaches about 30°C in the afternoon and slips back to 16°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 39°C. Set against its neighbours, December runs about 2°C warmer than November and about 2°C cooler than January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 |
| Avg low (°C) | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 29 | 15 |
| 2 | 29 | 15 |
| 3 | 29 | 15 |
| 4 | 29 | 16 |
| 5 | 29 | 16 |
| 6 | 29 | 16 |
| 7 | 29 | 16 |
| 8 | 29 | 16 |
| 9 | 29 | 16 |
| 10 | 29 | 16 |
| 11 | 29 | 16 |
| 12 | 29 | 16 |
| 13 | 29 | 16 |
| 14 | 29 | 16 |
| 15 | 30 | 16 |
| 16 | 30 | 17 |
| 17 | 30 | 17 |
| 18 | 30 | 17 |
| 19 | 30 | 17 |
| 20 | 30 | 17 |
| 21 | 30 | 17 |
| 22 | 30 | 17 |
| 23 | 30 | 17 |
| 24 | 30 | 17 |
| 25 | 30 | 17 |
| 26 | 30 | 17 |
| 27 | 31 | 17 |
| 28 | 31 | 17 |
| 29 | 31 | 17 |
| 30 | 31 | 18 |
| 31 | 31 | 18 |
Whyalla weather by month
How December compares with the rest of the year at a glance. December is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.
| 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 December
The sky is clear or mostly clear about 55% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 31%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 68 | 68 | 67 | 67 | 67 | 66 | 66 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 66 | 66 | 67 | 67 | 69 | 70 | 70 | 72 | 73 | 74 | 75 | 76 | 76 | 78 | 78 | 78 |
| Cloudier (%) | 32 | 32 | 33 | 33 | 33 | 34 | 34 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 34 | 34 | 33 | 33 | 31 | 30 | 30 | 28 | 27 | 26 | 25 | 24 | 24 | 22 | 22 | 22 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 68 | 32 |
| 2 | 68 | 32 |
| 3 | 67 | 33 |
| 4 | 67 | 33 |
| 5 | 67 | 33 |
| 6 | 66 | 34 |
| 7 | 66 | 34 |
| 8 | 65 | 35 |
| 9 | 65 | 35 |
| 10 | 65 | 35 |
| 11 | 65 | 35 |
| 12 | 65 | 35 |
| 13 | 65 | 35 |
| 14 | 65 | 35 |
| 15 | 65 | 35 |
| 16 | 66 | 34 |
| 17 | 66 | 34 |
| 18 | 67 | 33 |
| 19 | 67 | 33 |
| 20 | 69 | 31 |
| 21 | 70 | 30 |
| 22 | 70 | 30 |
| 23 | 72 | 28 |
| 24 | 73 | 27 |
| 25 | 74 | 26 |
| 26 | 75 | 25 |
| 27 | 76 | 24 |
| 28 | 76 | 24 |
| 29 | 78 | 22 |
| 30 | 78 | 22 |
| 31 | 78 | 22 |
Chance of precipitation in December
Whyalla gets around 30 mm of rain over 4.1 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 12% and peaks near 15% on the wettest days. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 8 | 7 |
| Rain chance (%) | |
|---|---|
| 1 | 14 |
| 2 | 14 |
| 3 | 14 |
| 4 | 14 |
| 5 | 14 |
| 6 | 14 |
| 7 | 15 |
| 8 | 15 |
| 9 | 15 |
| 10 | 15 |
| 11 | 15 |
| 12 | 15 |
| 13 | 15 |
| 14 | 14 |
| 15 | 14 |
| 16 | 14 |
| 17 | 13 |
| 18 | 13 |
| 19 | 13 |
| 20 | 12 |
| 21 | 12 |
| 22 | 12 |
| 23 | 11 |
| 24 | 10 |
| 25 | 10 |
| 26 | 9 |
| 27 | 9 |
| 28 | 8 |
| 29 | 8 |
| 30 | 8 |
| 31 | 7 |
Humidity in December
Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the dry band about 80% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 87 | 86 | 86 | 84 | 84 | 82 | 81 | 80 | 80 | 79 | 79 | 79 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 79 | 79 | 79 | 80 | 80 | 80 | 80 | 79 | 79 | 78 | 78 | 78 |
| Comfortable (%) | 9 | 10 | 10 | 11 | 11 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 14 | 15 | 16 | 17 | 17 |
| Humid (%) | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 5 | 5 | 4 | 4 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 87 | 9 | 4 | 0 |
| 2 | 86 | 10 | 4 | 0 |
| 3 | 86 | 10 | 4 | 0 |
| 4 | 84 | 11 | 5 | 0 |
| 5 | 84 | 11 | 5 | 0 |
| 6 | 82 | 12 | 5 | 1 |
| 7 | 81 | 12 | 6 | 1 |
| 8 | 80 | 13 | 6 | 1 |
| 9 | 80 | 13 | 6 | 1 |
| 10 | 79 | 13 | 7 | 1 |
| 11 | 79 | 13 | 7 | 1 |
| 12 | 79 | 13 | 7 | 1 |
| 13 | 78 | 13 | 8 | 1 |
| 14 | 78 | 13 | 8 | 1 |
| 15 | 78 | 13 | 8 | 1 |
| 16 | 78 | 13 | 8 | 1 |
| 17 | 78 | 13 | 8 | 1 |
| 18 | 78 | 13 | 8 | 1 |
| 19 | 78 | 13 | 8 | 1 |
| 20 | 79 | 12 | 8 | 1 |
| 21 | 79 | 12 | 8 | 1 |
| 22 | 79 | 12 | 8 | 1 |
| 23 | 80 | 12 | 7 | 1 |
| 24 | 80 | 12 | 7 | 1 |
| 25 | 80 | 13 | 6 | 1 |
| 26 | 80 | 13 | 6 | 1 |
| 27 | 79 | 14 | 6 | 1 |
| 28 | 79 | 15 | 5 | 1 |
| 29 | 78 | 16 | 5 | 1 |
| 30 | 78 | 17 | 4 | 1 |
| 31 | 78 | 17 | 4 | 1 |
Wind in December
Winds average 16 km/h in December.
Across December, 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.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 16 | light breeze |
| 2 | 16 | light breeze |
| 3 | 16 | light breeze |
| 4 | 16 | light breeze |
| 5 | 16 | light breeze |
| 6 | 16 | light breeze |
| 7 | 16 | light breeze |
| 8 | 16 | light breeze |
| 9 | 16 | light breeze |
| 10 | 16 | light breeze |
| 11 | 16 | light breeze |
| 12 | 16 | light breeze |
| 13 | 16 | light breeze |
| 14 | 16 | light breeze |
| 15 | 16 | light breeze |
| 16 | 16 | light breeze |
| 17 | 16 | light breeze |
| 18 | 16 | light breeze |
| 19 | 16 | light breeze |
| 20 | 16 | light breeze |
| 21 | 16 | light breeze |
| 22 | 16 | light breeze |
| 23 | 16 | light breeze |
| 24 | 16 | light breeze |
| 25 | 16 | light breeze |
| 26 | 16 | light breeze |
| 27 | 16 | light breeze |
| 28 | 16 | light breeze |
| 29 | 17 | light breeze |
| 30 | 17 | light breeze |
| 31 | 17 | light breeze |
Sunrise & sunset in December
Daylight runs from about 14 hours at the start of December to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 12 minutes over December. Sunrise moves from 6:09 AM to 6:18 AM, and sunset from 8:10 PM to 8:27 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.0 | 14.0 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 |
| Sunrise (AM) | 6:09 | 6:09 | 6:09 | 6:09 | 6:09 | 6:09 | 6:09 | 6:09 | 6:09 | 6:09 | 6:09 | 6:10 | 6:10 | 6:10 | 6:10 | 6:11 | 6:11 | 6:12 | 6:12 | 6:12 | 6:13 | 6:13 | 6:14 | 6:14 | 6:15 | 6:15 | 6:16 | 6:16 | 6:17 | 6:18 | 6:18 |
| Sunset (PM) | 8:10 | 8:11 | 8:12 | 8:13 | 8:13 | 8:14 | 8:15 | 8:16 | 8:16 | 8:17 | 8:18 | 8:18 | 8:19 | 8:20 | 8:20 | 8:21 | 8:22 | 8:22 | 8:23 | 8:23 | 8:24 | 8:24 | 8:25 | 8:25 | 8:26 | 8:26 | 8:26 | 8:27 | 8:27 | 8:27 | 8:27 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.0 | 6:09 | 8:10 |
| 2 | 14.0 | 6:09 | 8:11 |
| 3 | 14.1 | 6:09 | 8:12 |
| 4 | 14.1 | 6:09 | 8:13 |
| 5 | 14.1 | 6:09 | 8:13 |
| 6 | 14.1 | 6:09 | 8:14 |
| 7 | 14.1 | 6:09 | 8:15 |
| 8 | 14.1 | 6:09 | 8:16 |
| 9 | 14.1 | 6:09 | 8:16 |
| 10 | 14.1 | 6:09 | 8:17 |
| 11 | 14.1 | 6:09 | 8:18 |
| 12 | 14.1 | 6:10 | 8:18 |
| 13 | 14.2 | 6:10 | 8:19 |
| 14 | 14.2 | 6:10 | 8:20 |
| 15 | 14.2 | 6:10 | 8:20 |
| 16 | 14.2 | 6:11 | 8:21 |
| 17 | 14.2 | 6:11 | 8:22 |
| 18 | 14.2 | 6:12 | 8:22 |
| 19 | 14.2 | 6:12 | 8:23 |
| 20 | 14.2 | 6:12 | 8:23 |
| 21 | 14.2 | 6:13 | 8:24 |
| 22 | 14.2 | 6:13 | 8:24 |
| 23 | 14.2 | 6:14 | 8:25 |
| 24 | 14.2 | 6:14 | 8:25 |
| 25 | 14.2 | 6:15 | 8:26 |
| 26 | 14.2 | 6:15 | 8:26 |
| 27 | 14.2 | 6:16 | 8:26 |
| 28 | 14.2 | 6:16 | 8:27 |
| 29 | 14.2 | 6:17 | 8:27 |
| 30 | 14.2 | 6:18 | 8:27 |
| 31 | 14.2 | 6:18 | 8:27 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 7.68 kWh/m².
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 — December's 7.68 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.7 | 7.7 | 7.7 | 7.8 | 7.8 | 7.9 | 7.9 | 8.0 | 8.0 | 8.1 | 8.1 | 8.2 | 8.2 | 8.2 | 8.3 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 7.5 | Intense |
| 2 | 7.5 | Intense |
| 3 | 7.5 | Intense |
| 4 | 7.5 | Intense |
| 5 | 7.5 | Intense |
| 6 | 7.5 | Intense |
| 7 | 7.5 | Intense |
| 8 | 7.5 | Intense |
| 9 | 7.5 | Intense |
| 10 | 7.5 | Intense |
| 11 | 7.6 | Intense |
| 12 | 7.6 | Intense |
| 13 | 7.6 | Intense |
| 14 | 7.6 | Intense |
| 15 | 7.6 | Intense |
| 16 | 7.6 | Intense |
| 17 | 7.7 | Intense |
| 18 | 7.7 | Intense |
| 19 | 7.7 | Intense |
| 20 | 7.8 | Intense |
| 21 | 7.8 | Intense |
| 22 | 7.9 | Intense |
| 23 | 7.9 | Intense |
| 24 | 8.0 | Intense |
| 25 | 8.0 | Intense |
| 26 | 8.1 | Intense |
| 27 | 8.1 | Intense |
| 28 | 8.2 | Intense |
| 29 | 8.2 | Intense |
| 30 | 8.2 | Intense |
| 31 | 8.3 | Intense |
Hazard calendar for Whyalla
In December, 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.
Is December a good time to visit Whyalla?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December 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 December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Whyalla sees daytime highs around 30°C and nights near 16°C. Pack light clothes and sun protection. About 4 days see rain.
Sea temperature near Whyalla in December
The nearest coast averages about 21°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 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 December
Clear-sky midday UV in December 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.
| 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. 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).