All data are in degrees Fahrenheit

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Water temperature in Whyalla

Detailed information about the current water temperature in Whyalla. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Whyalla now

57.6

°F

July 21, 12:18

Trend:

stable

Yesterday:

57.7°F

Tomorrow:

57.6°F

Sunrise:

07:18

Sunset:

17:34

Day Length:

10 h. 16 min.

Whyalla in July

Minimum:

70.5°F

Average:

73.4°F

Maximum:

76.2°F

Sea water temperature in Whyalla today

As of now, in Whyalla, the water temperature is 57.6°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 2.8°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 55.9°F on 2019, while the historical minimum was 54.1°F on 2022.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 57.7°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Whyalla

Date Current Year

actual* / forecast**

last year 10 years average
Jul 7 57.2°F 56.0°F 55.7°F
Jul 8 57.2°F 55.9°F 55.7°F
Jul 9 57.1°F 55.9°F 55.6°F
Jul 10 57.2°F 55.1°F 55.5°F
Jul 11 57.5°F 55.3°F 55.6°F
Jul 12 57.4°F 55.3°F 55.5°F
Jul 13 57.1°F 55.0°F 55.4°F
Jul 14 57.0°F 55.2°F 55.3°F
Jul 15 57.1°F 55.3°F 55.5°F
Jul 16 57.5°F 54.7°F 55.4°F
Jul 17 57.5°F 54.7°F 55.3°F
Jul 18 57.3°F 54.8°F 55.2°F
Jul 19 57.4°F 54.8°F 55.2°F
Jul 20 57.7°F 54.9°F 54.9°F
Jul 21 57.6°F 54.8°F 54.8°F
Jul 22 57.6°F 54.7°F 54.8°F
Jul 23 57.6°F 54.6°F 54.8°F
Jul 24 57.6°F 54.7°F 54.8°F
Jul 25 57.7°F 54.8°F 55.0°F
Jul 26 57.7°F 54.5°F 55.0°F
Jul 27 57.7°F 54.2°F 54.9°F
Jul 28 57.7°F 54.0°F 54.9°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Whyalla by month

In Whyalla, the months January through March offer comfortable swimming conditions, which amounts to 78 swimming days.
The warmest water in Whyalla was recorded on January 25, 2019, reaching a 78.9°F. While the coldest temperature occurred on July 31, 2025, dipping to 53.5°F. The average readings by season are 73.5°F in Winter, 68.7°F in Spring, 56.5°F in Summer, and 63.3°F in Autumn.