Whyalla, South Australia
December 2025 Daily Weather Observations

DateDayTempsRainEvapSunMax wind gust9 am3 pm
MinMaxDirSpdTimeTempRHCldDirSpdMSLPTempRHCldDirSpdMSLP
°C°Cmmmmhourskm/hlocal°C%8thkm/hhPa°C%8thkm/hhPa
1Mo12.821.90  S6511:5018.4481WSW311016.720.143 S391016.4
2Tu10.225.20  ESE3315:3216.5621SSE131020.421.247 ESE241017.4
3We12.135.60  NNW4809:2725.230 N241016.933.711 N281013.1
4Th21.240.70  NNW6912:1530.3151N301011.638.786NW371007.5
5Fr16.030.70  SSW5718:1519.8701SSW131010.523.558 S201008.2
6Sa18.623.70  NW6903:0119.6717SSW301008.721.958 S351010.2
7Su13.923.00  S4323:1416.8468SE241018.721.334 SSE171014.3
8Mo11.330.70  S4115:2321.544 NE71013.629.819 ESE241009.9
9Tu16.928.20  SSW5417:5821.460 SSW221014.926.648 S281012.7
10We18.932.40  SSW6309:5623.6497SE151016.930.4321S351014.7
11Th19.429.80  SSW5610:5323.6584NNW71013.826.1462SSE171015.0
12Fr16.638.50  SSW5922:2929.2311NE61007.436.816 SE241003.0
13Sa19.227.30  SSW6301:0420.1703SSW331009.623.754 S441009.5
14Su13.022.90  SSW6317:2519.0651SSW201016.021.357 S411014.4
15Mo14.623.10  SSW5918:1416.5521SE311021.122.142 S371019.6
16Tu14.430.00  S3519:0720.941 ESE131020.727.724 SSE151016.8
17We13.235.70  SE3313:1826.237 S41016.634.212 SE221013.2
18Th18.342.60  NNW5009:1134.526 N311012.741.115 NNW221008.7
19Fr23.727.10  SSW6714:5825.066 SSW201009.724.9647S431007.3
20Sa17.927.20  S4815:3919.9718S241008.426.042 SSE241005.2
21Su19.529.10  SSW7616:1722.9428WSW331004.625.8438S241004.9
22Mo16.123.00     17.8627S201014.320.9518SSE261013.5
23Tu16.023.6   SSW5217:2819.6668SSW221017.622.2488S301016.4
24We16.423.20  SSW6316:1617.7648SSE201018.821.551 S331017.1
25Th15.024.40  SSW5916:2916.3581SE331020.822.842 SSW411017.3
26Fr15.027.20  SSW5016:2918.052 SE221020.324.430 S281015.6
27Sa16.831.40  ENE3306:4923.236 E221015.430.716 SE191012.1
28Su13.736.90  ESE3012:1028.021 NE41014.135.99 SE171012.5
29Mo16.039.40  SSW5918:4330.017 Calm1012.737.98 SE221009.1
30Tu19.623.60  SSW7216:0820.6737S431014.122.9628S371011.3
31We15.824.20  SSW6116:0416.959 SSE281016.122.638 SSW371013.1
Statistics for December 2025
Mean16.229.1      21.9504 201014.627.1366 281012.3
Lowest10.221.90     16.3151Calm1004.620.181SSE151003.0
Highest23.742.60  SSW76 34.5738S431021.141.1648S441019.6
Total  0.0                 

IDCJDW5071.202512   Prepared at 13:02 UTC on Wednesday 7 January 2026

Source of data

Observations were drawn from Whyalla Aero {station 018120}.

Some cloud observations are from automated equipment; these are somewhat different to those made by a human observer and may not appear every day.

You should read the important information in these notes.

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Other times and other places

The last 14 months of Daily Weather Observations for Whyalla, South Australia are also here on this web site:

Jan 26   Dec 25   Nov 25   Oct 25   Sep 25   Aug 25   Jul 25   Jun 25   
May 25   Apr 25   Mar 25   Feb 25   Jan 25   Dec 24   

Daily Weather Observations are also routinely prepared for hundreds of other locations in South Australia and across Australia. To get other months or places not on this web site, contact us.

Climate statistics

If you are after long-term averages relevant to Whyalla, South Australia, look at the tables for Whyalla Aero or Whyalla (Norrie).

Maps and tables of average conditions for locations across Australia are also available.

More information

If you are using these pages, you are deemed to have understood the important information in these notes. They cover how the data are obtained, how they are processed, and what each column means.

If you have any questions about this product, or you want any other weather or climate information, please contact us.