Rottnest Island, Western Australia
September 2025 Daily Weather Observations

DateDayTempsRainEvapSunMax wind gust9 am3 pm
MinMaxDirSpdTimeTempRHCldDirSpdMSLPTempRHCldDirSpdMSLP
°C°Cmmmmhourskm/hlocal°C%8thkm/hhPa°C%8thkm/hhPa
1Mo11.919.70  SW3117:5916.574 N111022.918.945 WNW171021.0
2Tu13.618.90.8  S3704:3815.684 NE151023.417.362 SSE151020.8
3We12.318.00  SSW5223:1615.762 E111018.317.262 SSW311014.5
4Th13.018.80  S4600:0315.066 SSE91015.717.854 W191013.1
5Fr14.916.91.2  NNW8009:1815.192 N501001.114.277 WNW20998.5
6Sa10.616.117.4  SSW9104:1212.582 SSW671006.115.054 SW521010.4
7Su11.116.54.2  SSW6723:4815.166 W311013.514.367 SW351013.4
8Mo8.214.37.6  S6302:4110.962 SE201022.513.854 S281023.8
9Tu9.715.30.2  SSE4820:5212.661 SE191030.914.951 S311028.7
10We11.218.00  SSE4121:1613.168 E201030.817.057 S191027.4
11Th11.120.90  NNE3710:4115.559 NNE261026.620.239 NW111023.1
12Fr14.822.40  NNE6908:5018.146 NNE481017.621.457 N371014.9
13Sa17.421.62.2  NW5912:4719.476 NW331012.417.491 NW331010.7
14Su13.817.87.8  W9613:5416.083 WNW541006.312.585 W651008.1
15Mo11.416.62.4  SW7001:4614.655 WSW391017.214.660 SW431017.9
16Tu10.718.11.2  NW5422:3811.881 NNE201022.517.047 WNW191019.7
17We11.619.31.0  NW6903:0117.377 NW431015.618.158 W301015.5
18Th12.918.37.4  SW5223:0916.358 SW281022.417.454 SW281022.2
19Fr13.317.52.2  SSW5003:5415.386 ESE111026.816.975 S171025.9
20Sa14.2 0     16.283 SSE171027.6      
Statistics for the first 20 days of September 2025
Mean12.418.2      15.171  281019.016.660  281017.3
Lowest8.214.30     10.946 SSE91001.112.539 NW11998.5
Highest17.422.417.4  W96 19.492 SSW671030.921.491 W651028.7
Total  55.6                 

IDCJDW6118.202509   Prepared at 02:20 UTC on Saturday 20 September 2025

Source of data

Observations were drawn from Rottnest Island {station 009193}.

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 Rottnest Island, Western Australia are also here on this web site:

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   Aug 24   

Daily Weather Observations are also routinely prepared for hundreds of other locations in Western 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 Rottnest Island, Western Australia, look at the tables for Rottnest Island or Rottnest Island Lighthouse.

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.

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