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Forecast

William Bay (34.9935°S, 117.2251°E, 62m AMSL) set as my default location ›

  1. My MLA

  2. Current condition

    TODAY
    Sunny 18°
    Chance of rain: 5%
    Likely amount: < 1mm
    First
    light
    Sunrise Sunset Last light
    Sunrise Sunset
    6:17am WST 6:43am WST 5:42pm WST 6:08pm WST
    NOW
    19.4° Feels Like: 18.7°
    Relative Humidity: 50%
    Dew: 8.7°
    Wind: NNW 2km/h
    Gust: NNW 2km/h
    Rainfall since 9am: 0.0mm
    Pressure: 1030.8hPa
  3. Today Weather

    William Bay
    Now
    18.5°c
    Feels Like:
    15.5°
    Wind:
    N 13km/h
    Gusts:
    15km/h
    Humidity:
    50%
    Sunny
     
    Min
    18°
    Max
    Today in William Bay
    Sunny. Areas of frost inland early this morning. Light winds. Daytime maximum temperatures around 20.
    Tomorrow
    Sunny
    Min
    20°
    Max
    Sunny. Light winds becoming N 15 to 25 km/h in the morning. Overnight temperatures falling to around 5 with daytime temperatures reaching the low 20s.
  4. Radar

  5. Popup Radar

  6. Warnings

    There are no current warnings for William Bay

  7. Next 48 Hours


    Next 48 Hours


  8. 7 day forecast

    Today: Sunny. Areas of frost inland early this morning. Light winds. Daytime maximum temperatures around 20.

    Forecast for William Bay (34.9935°S, 117.2251°E, 62m AMSL)
      Tue Wed Thu Fri Sat Sun Mon
    Summary Sunny Sunny Sunny Possible shower Mostly sunny Late shower Mostly sunny
    Minimum 12°
    Maximum 18° 20° 21° 11° 12° 15° 16°
    Chance of rain 5% 5% 90% 70% 5% 40% 20%
    Likely amount < 1mm < 1mm 5-10mm 5-10mm < 1mm < 1mm < 1mm
    UV index - - - - - - -
    Frost risk Nil Nil Nil Nil Nil Nil Nil
      9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm
    Wind speed 10
    (km/h)
    9
    (km/h)
    17
    (km/h)
    18
    (km/h)
    26
    (km/h)
    24
    (km/h)
    17
    (km/h)
    18
    (km/h)
    10
    (km/h)
    11
    (km/h)
    14
    (km/h)
    11
    (km/h)
    8
    (km/h)
    6
    (km/h)
    Wind direction N NNW NNE N N N SW SW W WSW NNW W NNW NW
    Relative humidity 80% 54% 61% 45% 47% 38% 87% 74% 76% 63% 75% 60% 82% 61%
    Dew point 8°C 9°C 6°C 8°C 3°C 6°C 8°C 6°C 5°C 5°C 5°C 7°C 7°C 9°C
  9. 28 Day Rainfall forecast

    William Bay Rain Forecast


    William Bay 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    20
    21
    22
    MEDIUM
    23
    MEDIUM
    24
    LOW
    25
    26
    27
    LOW
    28
    MEDIUM
    29
    MEDIUM
    30
    LOW
    31
    MEDIUM
    Sep 1
    2
    HIGH
    3
    LOW
    4
    LOW
    5
    6
    HIGH
    7
    LOW
    8
    9
    10
    LOW
    11
    12
    LOW
    13
    LOW
    14
    15
    LOW
    16
    17
    LOW
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Aug20

    Issue Notes

    The hemispheric long wave pattern has remained stable in recent weeks. There are three main troughs. Currently the most significant troughs are near the longitudes of South Africa, the southwest Indian Ocean, and New Zealand.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 25 August to 29 August, 6 September to 10 September, and 18 September to 22 September. Rain events originating in the tropics and moving south are possible about 25 August to 29 August, 29 August to 2 September, and 11 September to 15 September. Over Western Australia the strongest cold fronts should occur about 25 August to 29 August, 31 August to 4 September, and 18 September to 22 September.

  10. 12 Month Rainfall Forecast

    William Bay Rain Forecast


    William Bay 12-month Rainfall Forecast
    Aug
    Sep
    Oct
    Nov
    Dec
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    2019
    2020
    7
    5
    4
    6
    6
    6
    6
    7
    5
    5
    4
    5
    10
    5
    0
    1
    2 - 3
    4 - 7
    8 - 9
    10
    Well below normal
    Below normal
    Near normal
    Above normal
    Well above normal

    Issue Notes - Issued Aug 8

    ENSO status: Neutral IOD status: Positive Sea surface temperatures (SST's) continued a cooling trend over the central Pacific during July. The Nino3.4 index lingered at about 0.5 through the month of July. The Southern Oscillation Index (SOI) recorded a value of -5.6 in July, which is now in neutral territory. Current consensus suggests warmer than average SSTs will remain across the equatorial Pacific Ocean through the austral spring, but well within neutral values. Although, six out of eight international models maintain a warmer than average Pacific Ocean through the remainder of 2019, none of these are reaching El Nino thresholds during the 2019/2020 summer. Moreover, the IRI ENSO forecast suggests less than 50% of another El Nino developing over the next 12 months. On the other hand, the Indian Ocean Dipole (IOD) remains strongly positive. Six out of six international models maintain a positive event until mid-spring. The climate outlook for the four weeks left in winter and spring, favours average-to-below average rainfall across the southern half of Australia, in particular over the eastern half of the continent. During Positive IODs, central and southeastern Australia tend to see a reduction in rainfall during the end of winter and the first half of spring due to a reduction of moisture streaming from the northwest. SST's along the eastern seaboard remain significantly warmer than average (especially off NSW) maintaining a high risk of extreme weather events such as East Coast Lows (ECLs). These can bring intense periods of rainfall east of the Great Dividing Range, leading to flash flooding.

  11. Long range rainfall forecast

    William Bay Rain Forecast


    William Bay 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    20
    21
    22
    MEDIUM
    23
    MEDIUM
    24
    LOW
    25
    26
    27
    LOW
    28
    MEDIUM
    29
    MEDIUM
    30
    LOW
    31
    MEDIUM
    Sep 1
    2
    HIGH
    3
    LOW
    4
    LOW
    5
    6
    HIGH
    7
    LOW
    8
    9
    10
    LOW
    11
    12
    LOW
    13
    LOW
    14
    15
    LOW
    16
    17
    LOW
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Aug20

    Issue Notes

    The hemispheric long wave pattern has remained stable in recent weeks. There are three main troughs. Currently the most significant troughs are near the longitudes of South Africa, the southwest Indian Ocean, and New Zealand.

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 25 August to 29 August, 6 September to 10 September, and 18 September to 22 September. Rain events originating in the tropics and moving south are possible about 25 August to 29 August, 29 August to 2 September, and 11 September to 15 September. Over Western Australia the strongest cold fronts should occur about 25 August to 29 August, 31 August to 4 September, and 18 September to 22 September.

  12. Popup - Daily historical

  13. Past 5 Days

    William Bay Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Friday
    Aug 16
    11.2 °C 16.1 °C
    0.0 mm
    Saturday
    Aug 17
    7.5 °C 13.8 °C
    25.8 mm
    Sunday
    Aug 18
    9.3 °C 16.6 °C
    4.8 mm
    Monday
    Aug 19
    7.3 °C 18.5 °C
    1.2 mm
    Tuesday
    Aug 20
    7.3 °C 20 °C
    0.0 mm
    Legend
  14. Almanac

    Almanac


    William Bay minimum temp history (34.9935°S, 117.2251°E, 62m AMSL)
    MAXIMUM TEMPERATURE MINIMUM TEMPERATURE
    Hottest this month 21.7° 12/08/2019 Coldest this month 7.0° 20/08/2019
    Hottest on record 24.4 21/08/2011 Coldest on record 2.6 24/08/2016
    Hottest this year 30.7° 26/02/2019 Coldest this year 4.9° 19/05/2019
    Long term average 16.7° Long term average 9.1°
    Average this month 16.9° Average this month 9.4°
    Hottest August On Record Avg. max. temp. 18.2° 2014 Coldest August on record Avg. min. temp. 7.8° 2008
    William Bay rainfall history (34.9935°S, 117.2251°E, 62m AMSL)
    RAINFALL
    Wettest This Month 27.2mm 14/08/2019 Total This Month 112.4mm
    13.0 days
    Long Term Average 152.1mm 20.5 days Wettest August on record 257.6mm 2014
  15. Popup - Radar

  16. Year to Date

    William Bay Year To Date

    Average Rainfall To Aug 791.1mm 124.0 day(s)
    Total For 2019 703.2mm 127.0 day(s)
    Total To This Day 2018 642.2mm 100.0 day(s)
    Wettest Day 39.6mm Jun 9
    Lowest Temperature 4.9°C May19
    Highest Temperature 30.7°C Feb26
  17. Popup - Monthly historical

  18. Climatology

    William Bay Climatology

    Long-Term Averages
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
    Mean Max (°C) 24.5 25.0 23.8 21.4 19.0 16.9 16.0 16.7 17.3 19.0 21.1 22.4 20.3
    Mean Min (°C) 14.5 15.1 14.3 12.8 11.3 9.9 8.8 9.1 9.2 10.5 11.8 12.8 11.7
    Mean Rain (mm) 29.8 22.2 39.2 87.2 126.2 159.2 175.2 152.1 122.8 81.4 60.2 42.9 1080.1
    Mean Rain Days 8.9 8.1 11.3 15.3 19.1 19.1 21.7 20.5 17.4 16.7 13.5 12.6 174.4