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Forecast

Nepean (30.9677°S, 120.8644°E, 464m AMSL) set as my default location ›

  1. My MLA

  2. Current condition

    TOMORROW
    Mostly sunny 10° 27°
    mostly sunny
    Chance of rain: 5%
    Likely amount: < 1mm
    First
    light
    Sunrise Sunset Last light
    Sunrise Sunset
    5:18am WST 5:42am WST 5:51pm WST 6:15pm WST
    NOW
    18.5° Feels Like: 13.1°
    Relative Humidity: 26%
    Dew: -1.3°
    Wind: ENE 17km/h
    Gust: ENE 17km/h
    Rainfall since 9am: 0.0mm
    Pressure: 1027.6hPa
  3. Today Weather

    Nepean
    Now
    17.0°c
    Feels Like:
    11.4°
    Wind:
    NE 17km/h
    Gusts:
    20km/h
    Humidity:
    26%
    Mostly sunny
     
    10°
    Min
    27°
    Max
    Today in Nepean
    Mostly sunny. Winds E/NE 15 to 20 km/h tending N/NE 15 to 25 km/h in the morning then tending E/NE 15 to 20 km/h in the evening. Overnight temperatures falling to between 5 and 11 with daytime temperatures reaching the high 20s.
    Tomorrow
    Mostly sunny
    10°
    Min
    27°
    Max
    Mostly sunny. Winds N/NE 15 to 20 km/h tending N/NW 15 to 25 km/h in the morning then becoming light in the late afternoon. Overnight temperatures falling to between 10 and 13 with daytime temperatures reaching around 30.
  4. Radar

  5. Popup Radar

  6. Warnings

    There are no current warnings for Nepean

  7. Next 48 Hours


    Next 48 Hours


  8. 7 day forecast

    Today: Mostly sunny. Winds E/NE 15 to 20 km/h tending N/NE 15 to 25 km/h in the morning then tending E/NE 15 to 20 km/h in the evening. Overnight temperatures falling to between 5 and 11 with daytime temperatures reaching the high 20s.

    Forecast for Nepean (30.9677°S, 120.8644°E, 464m AMSL)
      Tue Wed Thu Fri Sat Sun Mon
    Summary Mostly sunny Mostly sunny Mostly sunny Possible thunderstorm Mostly sunny Sunny Mostly sunny
    Minimum 10° 13° 13° 12° 13° 13° 15°
    Maximum 27° 31° 29° 28° 28° 30° 33°
    Chance of rain 5% 5% 50% 40% 20% 5% 60%
    Likely amount < 1mm < 1mm < 1mm 1-5mm < 1mm < 1mm < 1mm
    UV index High High High High - - -
    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 21
    (km/h)
    16
    (km/h)
    19
    (km/h)
    17
    (km/h)
    13
    (km/h)
    7
    (km/h)
    25
    (km/h)
    20
    (km/h)
    19
    (km/h)
    16
    (km/h)
    13
    (km/h)
    13
    (km/h)
    14
    (km/h)
    15
    (km/h)
    Wind direction NE NNE N NW SSE SW E ENE ESE S E NNE SW NNW
    Relative humidity 31% 14% 23% 15% 39% 20% 59% 38% 52% 29% 57% 23% 36% 15%
    Dew point 2°C -2°C 1°C 2°C 7°C 4°C 11°C 12°C 10°C 9°C 11°C 7°C 8°C 4°C
  9. 28 Day Rainfall forecast

    Nepean Rain Forecast


    Nepean 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    23
    24
    25
    26
    LOW
    27
    LOW
    28
    29
    LOW
    30
    Oct 1
    2
    LOW
    3
    LOW
    4
    5
    6
    7
    8
    LOW
    9
    LOW
    10
    MEDIUM
    11
    MEDIUM
    12
    13
    14
    15
    16
    LOW
    17
    MEDIUM
    18
    MEDIUM
    19
    20
    21
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Sep23

    Issue Notes

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

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 28 September to 2 October, 19 October to 23 October, and 25 October to 29 October. Rain events originating in the tropics and moving south are possible about 12 October to 16 October. Over Western Australia the strongest cold fronts should occur about 28 September to 2 October, 2 October to 6 October, and 12 October to 16 October.

  10. 12 Month Rainfall Forecast

    Nepean Rain Forecast


    Nepean 12-month Rainfall Forecast
    Sep
    Oct
    Nov
    Dec
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    2019
    2020
    2
    4
    4
    6
    5
    6
    7
    5
    5
    5
    6
    7
    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 Sep 10

    ENSO status: Neutral IOD status: Positive Sea surface temperatures (SSTs) continued the cooling trend over the central Pacific during August, with areas in the eastern equatorial Pacific exhibiting below average temperatures for the first time in about two years. The Nino3.4 index lingered between 0.2 and 0.1 through the month of August. The Southern Oscillation Index (SOI) recorded a value of -4.4 during the past month, which remains in neutral territory. Current consensus suggests warmer than average SSTs will persist across the equatorial Pacific Ocean through the austral spring, but well within neutral values. Although, three out of eight international models maintain a slightly warmer than average Pacific Ocean through the end of 2019, none of these are likely to reach El Nino thresholds during the 2019/2020 summer. Moreover, the IRI ENSO forecast suggests less than 40% of another El Nino developing over the next 12 months, with a neutral ENSO the most likely outcome. To the west of Australia, the Indian Ocean Dipole (IOD) remains strongly positive. All six international models maintain a strong positive event until the beginning of the summer. The climate outlook for spring favours below average rainfall across the southern half, and in particular 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 spring due to a reduction of moisture streaming from the northwest. On the other hand, far southern Victoria and western Tasmania could see above average rainfall during this period as a sudden stratospheric warming (SSW) over Antarctica looks to enhance the negative phase of the southern annular mode (SAM) over the coming months.

  11. Long range rainfall forecast

    Nepean Rain Forecast


    Nepean 28-day Rainfall Forecast
    SUN
    MON
    TUE
    WED
    THU
    FRI
    SAT
    23
    24
    25
    26
    LOW
    27
    LOW
    28
    29
    LOW
    30
    Oct 1
    2
    LOW
    3
    LOW
    4
    5
    6
    7
    8
    LOW
    9
    LOW
    10
    MEDIUM
    11
    MEDIUM
    12
    13
    14
    15
    16
    LOW
    17
    MEDIUM
    18
    MEDIUM
    19
    20
    21
    CHANCE OF RAINFALL WITHIN DISTRICT
    NIL < 25%
    LOW 25% to 50%
    MEDIUM 50% to 75%
    HIGH ≥ 75%
    Issued Sep23

    Issue Notes

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

    Summary:

    Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 28 September to 2 October, 19 October to 23 October, and 25 October to 29 October. Rain events originating in the tropics and moving south are possible about 12 October to 16 October. Over Western Australia the strongest cold fronts should occur about 28 September to 2 October, 2 October to 6 October, and 12 October to 16 October.

  12. Popup - Daily historical

  13. Past 5 Days

    Nepean Past 5 Days

    This Month
    Minimum Maximum Rainfall
    Thursday
    Sep 19
    10.3 °C 16.9 °C
    0.2 mm
    Friday
    Sep 20
    2.4 °C 15.2 °C
    0.2 mm
    Saturday
    Sep 21
    2.0 °C 18.5 °C
    0.0 mm
    Sunday
    Sep 22
    4.8 °C 18.8 °C
    0.0 mm
    Monday
    Sep 23
    6.9 °C 23 °C
    0.0 mm
    Legend
  14. Almanac

    Almanac


    Nepean minimum temp history (30.9677°S, 120.8644°E, 464m AMSL)
    MAXIMUM TEMPERATURE MINIMUM TEMPERATURE
    Hottest this month 36.0° 13/09/2019 Coldest this month 2.0° 21/09/2019
    Hottest on record 36.8 28/09/1980 Coldest on record -0.6 09/09/1953
    Hottest this year 45.3° 28/02/2019 Coldest this year -0.5° 29/06/2019
    Long term average 22.3° Long term average 8.0°
    Average this month 25.5° Average this month 9.7°
    Hottest September On Record Avg. max. temp. 25.5° 1981 Coldest September on record Avg. min. temp. 5.7° 2016
    Nepean rainfall history (30.9677°S, 120.8644°E, 464m AMSL)
    RAINFALL
    Wettest This Month 0.2mm 19/09/2019 Total This Month 0.4mm
    2.0 days
    Long Term Average 14.3mm 5.5 days Wettest September on record 98.3mm 1981
  15. Popup - Radar

  16. Year to Date

    Nepean Year To Date

    Average Rainfall To Sep 222.0mm 56.8 day(s)
    Total For 2019 127.2mm 35.0 day(s)
    Total To This Day 2018 180.0mm 61.0 day(s)
    Wettest Day 15.8mm Jun 8
    Lowest Temperature -0.5°C Jun29
    Highest Temperature 45.3°C Feb28
  17. Popup - Monthly historical

  18. Climatology

    Nepean Climatology

    Long-Term Averages
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
    Mean Max (°C) 33.7 32.1 29.4 25.2 20.7 17.5 16.8 18.7 22.3 25.9 29.1 32.0 25.2
    Mean Min (°C) 18.3 17.9 16.1 12.7 8.7 6.2 5.0 5.7 8.0 11.2 14.2 16.6 11.7
    Mean Rain (mm) 27.7 31.0 27.6 20.8 25.6 28.0 25.3 21.7 14.3 15.3 18.4 17.4 273.0
    Mean Rain Days 3.8 4.4 4.5 5.3 7.1 9.2 9.5 7.5 5.5 4.3 4.0 3.8 68.1