Whyalla Weather and Climate
Climate Snapshot
Whyalla's warmest month in 2024 was February, averaging 33.4 degrees. That gives Whyalla an annual average daytime high of 25.2 degrees, 2.3 degrees warmer than the South Australia mean.
Daytime highs peak at 33.4 degrees in February and bottom out with overnight lows of 6.5 degrees in July. That is a 26.9 degree spread from hottest afternoon to coldest night. Overnight minimums average 13.0 degrees across the year, 0.8 degrees warmer than the South Australia average of 12.2.
Annual rainfall totals 196mm across 50 rain days, 47 percent drier than the South Australia average. The wettest month is November at 36mm, and February is the driest at 0mm.
Don't let yearly averages fool you. The difference between November and February is massive, so timing your visit matters.
By our reckoning, September (9.7/10) is when the weather is at its finest, while June (4.5/10) is the toughest month to be outdoors.
The full data table below breaks it all down month by month. If you're in a hurry, September is your best bet.
Monthly Comfort Score
Our Comfort Score rates each month from 1 (tough) to 10 (ideal) based on temperature, humidity, rainfall, UV, and sunshine. How we calculate it
Annual Comfort Score: 7.2/10 - Ranked #33 of 213 Australian cities (national avg 6.2, SA avg 6.5)
Seasonal Overview
| Season | Avg Max °C | Avg Min °C | Total Rain mm | Comfort |
|---|---|---|---|---|
| Summer | 31.6 | 18.0 | 40 | 5.9 |
| Autumn | 24.6 | 13.4 | 21 | 8.1 |
| Winter | 18.6 | 7.8 | 67 | 6.0 |
| Spring | 25.9 | 12.7 | 69 | 8.9 |
Monthly Climate Averages
| Month | Max °C | Min °C | Rain mm | Rain Days | Solar MJ | Humidity % | Comfort |
|---|
Weather by Month
Detailed climate data, packing advice, and what to expect for each month in Whyalla.
30.9°C, 34mm rain February
33.4°C, 0mm rain March
30.5°C, 9mm rain April
22.2°C, 4mm rain May
21.2°C, 7mm rain June
16.9°C, 28mm rain July
16.8°C, 25mm rain August
22.0°C, 14mm rain September
22.5°C, 12mm rain October
27.0°C, 22mm rain November
28.3°C, 36mm rain December
30.6°C, 6mm rain
Compare and Explore
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