Casey, Antarctica
September 2025 Daily Weather Observations

DateDayTempsRainEvapSunMax wind gust9 am3 pm
MinMaxDirSpdTimeTempRHCldDirSpdMSLPTempRHCldDirSpdMSLP
°C°Cmmmmhourskm/hlocal°C%8thkm/hhPa°C%8thkm/hhPa
1Mo-11.3-9.30.8 0.0E5401:59-10.884 S15980.6-10.581 S24982.7
2Tu-16.5-11.35.4 0.0SSE2603:20-12.084 SE9988.5-11.682 ENE11988.6
3We-17.8-14.60 0.9NE5204:43-14.770 NE28983.6-16.676 N15982.9
4Th-18.0-14.80 0.0NE3104:35-16.867 NE15982.7-16.371 NE9984.2
5Fr-24.0-7.30 0.0ENE8317:35-16.359 NE33992.6-16.0788S13990.7
6Sa-16.1-10.55.0 0.0S3901:37-12.384 NNE13991.7-11.582 NNE9993.0
7Su-14.2-13.40.2 0.0NNE3102:53-13.4838NNE24992.1-14.786 E13991.6
8Mo-24.3-6.40 1.0SSE2203:52-22.169 S9995.6-18.853 ESE7995.8
9Tu-22.1-5.40 0.0E6508:18-8.556 S15987.2-10.077 S11987.3
10We-13.8-9.69.8 0.0SE2814:47-12.286 NE7985.7-10.570 SE17984.3
11Th-15.8-9.91.0 5.7E2601:51-12.3718ESE7979.4-15.365 Calm977.4
12Fr-16.9-13.30.2 0.0NE2809:05-14.968 NE20984.5-14.171 Calm987.3
13Sa-18.7-14.10 0.0NE3020:06-14.173 NE2988.3-15.182 NNE6987.6
14Su-16.7-14.50.6 0.0NE1108:07-15.577 Calm987.6-15.577 Calm986.3
15Mo-22.4-17.00.6 6.2NE2418:03-19.374 NNE13986.9-21.5761NNE13988.1
16Tu-24.8-7.00 0.2ENE11320:36-20.563 S17985.9-8.467 E39980.5
17We-20.3-5.42.6 0.0E17221:57-7.083 E96971.3-8.875 E89969.1
18Th-12.7-8.34.4 7.2ENE10901:59-8.362 E65981.0-8.865 S11983.8
19Fr-17.7-12.10 1.9ENE3105:24-13.868 S7981.0-14.075 E11979.0
20Sa-21.7-16.10 1.4NE3312:12-17.980 NE20971.1-16.582 ENE7970.3
21Su-23.7-7.20 2.1SE5720:44-20.453 E33979.6-17.1607E7981.1
22Mo-20.1-4.20 0.4E13017:34-9.653 SE7972.7-8.957 E72970.4
23Tu-17.6-9.50 9.5NNE4423:45-16.7673SSE15978.6-10.566 NNW13978.8
24We-16.6-14.30 9.8NE4809:07-15.972 NE33982.4-15.777 NNE13982.2
25Th-19.7-14.30 0.0ENE3019:39-16.574 E7979.7-15.064 NE19981.9
26Fr-16.9-13.90 6.1NE3503:02-15.470 NNE20989.3-15.1693S9990.0
27Sa-25.2-20.40 11.5SSE5622:08-23.262 S9988.9-20.861 S30988.9
28Su-24.6-14.20 11.1S6102:12-22.155 S28989.2-16.961 S39991.7
29Mo-20.8-8.00 0.0E9417:19-14.554 SSE11996.7-13.484 W20995.7
30Tu-15.7-10.910.4 1.4ENE3500:32-12.485 NNE13994.9-12.280 NNE19993.3
Statistics for September 2025
Mean-18.9-11.2  2.5   -15.0706 19985.0-14.0724 18984.8
Lowest-25.2-20.40 0.0   -23.2533Calm971.1-21.5531Calm969.1
Highest-11.3-4.210.4 11.5E172 -7.0868E96996.7-8.4868E89995.8
Total  41.0 76.4               

IDCJDW9203.202509   Prepared at 13:04 UTC on Tuesday 21 October 2025

Source of data

Observations were drawn from Casey {station 300017}.

"9 am" observations are those made at 0300 UTC. This is equivalent to 10 am Local Standard Time, but 11am according to the time used by most people at the station. "3 pm" observations are similarly those made at 0900 UTC (4 pm LST, 5 pm station time).The maximum wind gust is in the 24 hours to 1 am local standard time.

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 Casey, Antarctica are also here on this web site:

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

Daily Weather Observations are also routinely prepared for hundreds of other locations in Antarctica 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 Casey, Antarctica, look at the tables for Casey or Casey (The Tunnel).

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.