Forecast
Nepean (30.9677°S, 120.8644°E, 464m AMSL) set as my default location ›
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My MLA
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Current condition
TODAY11° 24° Chance of rain: 5% Likely amount: < 1mm First
lightLast light Sunrise Sunset 5:52am WST 6:17am WST 5:29pm WST 5:54pm WST NOW19.2° Feels Like: 16.3° Relative Humidity: 50% Dew: 8.5° Wind: N 13km/h Gust: 17km/h Rainfall since 9am: 0.0mm Pressure: 1028.8hPa -
Today Weather
NepeanNow19.2°cFeels Like:15.2°Wind:NE 17km/hGusts:20km/hHumidity:44%11°Min24°MaxToday in NepeanSunny. Winds E 15 to 25 km/h. Daytime maximum temperatures in the low to mid 20s.Tomorrow12°Min26°MaxSunny. Winds E 15 to 20 km/h becoming light early in the morning then becoming E 15 to 25 km/h in the morning. Overnight temperatures falling to between 9 and 12 with daytime temperatures reaching the mid to high 20s. -
Radar
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Popup Radar
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Warnings
There are no current warnings for Nepean
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7 day forecast
Today: Sunny. Winds E 15 to 25 km/h. Daytime maximum temperatures in the low to mid 20s.
Forecast for Nepean (30.9677°S, 120.8644°E, 464m AMSL) Fri Sat Sun Mon Tue Wed Thu Summary Minimum 11° 12° 13° 13° 10° 9° 9° Maximum 24° 26° 26° 27° 19° 18° 19° Chance of rain 5% 5% 5% 30% 5% 10% 5% Likely amount < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm < 1mm UV index High High High High High High High Fire Danger Rating Moderate Moderate Moderate 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 17
(km/h)15
(km/h)14
(km/h)13
(km/h)15
(km/h)8
(km/h)9
(km/h)20
(km/h)28
(km/h)25
(km/h)23
(km/h)24
(km/h)23
(km/h)22
(km/h)Wind direction ENE E ENE E NE NNE WNW SSW SSE SE SE SE E ESE Relative humidity 62% 33% 55% 31% 45% 26% 35% 27% 61% 39% 62% 40% 70% 40% Dew point 9°C 7°C 10°C 7°C 7°C 5°C 4°C 6°C 7°C 5°C 6°C 4°C 8°C 5°C -
28 Day Rainfall forecast
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12 Month Rainfall Forecast
Nepean Rain Forecast
Nepean 12-month Rainfall ForecastAprMayJunJulAugSepOctNovDecJanFebMar20242025146676798978105012 - 34 - 78 - 910Well below normalBelow normalNear normalAbove normalWell above normalIssue Notes - Issued Apr 16
ENSO status: Inactive. El Niño ended. IOD status: Neutral, becoming positive. SAM status: Positive, favouring positive. The El Niño Southern Oscillation (ENSO) has returned to an inactive phase for the first time since August 2021. Ocean cooling is occurring in the eastern Pacific, with 3 out of 7 global models forecasting a La Niña to develop in 2024. Warmer than normal waters are situated in the Coral Sea, providing moisture and humidity to the east coast. The atmosphere continues to be firmly neutral after weakening early in the year. A neutral ENSO typically has no significant impact on Australian rainfall during winter. The Indian Ocean Dipole (IOD) is in a neutral phase. Ocean temperatures are high across most of the Indian Ocean, and the IOD index is spiking in response. Persistent southeasterly winds have set in over the eastern Indian Ocean, signalling that the atmosphere is starting to respond to the ocean patterns. All international models are suggesting the IOD will strengthen into apositive phase over the next 2-3 months, with significant upwelling to start near Indonesia possibly in May. A positive IOD reduces the number of northwest cloudbands that cross Australia during winter and spring, reducing rainfall across central and southeastern parts of Australia. The Southern Annular Mode (SAM) is positive and will favour a positive phase during autumn and into winter. A positive SAM increases easterly winds, increasing rainfall and thunderstorm activity in the east. A positive SAM also reduces cold fronts and rainfall over southern Australia, particularly for southwest WA. Rainfall outlooks are showing below average rainfall over winter for WA, and the southwest coasts of SA, Vic and Tas. Conversely, above average rainfall is expected for eastern parts of Qld and NSW, and potentially eastern Tas.
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Popup - Daily historical
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Long range rainfall forecast
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Past 5 Days
Nepean Past 5 Days
This MonthMinimum Maximum Rainfall Monday
Apr 1512.3 °C 25.3 °C 0.2 mmTuesday
Apr 1612.9 °C 26.7 °C 0.0 mmWednesday
Apr 1712.8 °C 27.1 °C 0.0 mmThursday
Apr 1813.4 °C - 0.0 mmFriday
Apr 1911.8 °C 19.5 °C 0.0 mmLegend -
Almanac
Almanac
Nepean minimum temp history (30.9677°S, 120.8644°E, 464m AMSL) MAXIMUM TEMPERATURE MINIMUM TEMPERATURE Hottest this month 30.3° 07/04/2024 Coldest this month 10.0° 11/04/2024 Hottest on record 38.9 04/04/1945 Coldest on record 1.7 26/04/1960 Hottest this year 46.5° 21/02/2024 Coldest this year 10.0° 11/04/2024 Long term average 25.3° Long term average 12.8° Average this month 24.0° Average this month 12.8° Hottest April On Record Avg. max. temp. 29.5° 1981 Coldest April on record Avg. min. temp. 9.3° 1960 Nepean rainfall history (30.9677°S, 120.8644°E, 464m AMSL) RAINFALL Wettest This Month 6.8mm 14/04/2024 Total This Month 9.6mm
3.0 daysLong Term Average 20.2mm 5.3 days Wettest April on record 98.6mm 1961 Driest on record 0.0mm 2001 -
Year to Date
Nepean Year To Date
Average Rainfall To Apr 103.7mm 18.2 day(s) Total For 2024 122.0mm 22.0 day(s) Total To This Day 2023 61.4mm 15.0 day(s) Wettest Day 50.2mm Mar 9 Lowest Temperature 10.0°C Apr11 Highest Temperature 46.5°C Feb21 -
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Popup - Monthly historical
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Climatology
Climate History
Nepean Climatology
Nepean Long-Term Averages
Long-Term Averages Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Mean Max (°C) 33.7 32.2 29.5 25.3 20.7 17.6 16.9 18.8 22.4 26.0 29.1 32.1 25.3 Mean Min (°C) 18.4 18.0 16.2 12.8 8.7 6.3 5.1 5.8 8.2 11.3 14.2 16.7 11.7 Mean Rain (mm) 26.4 31.7 25.4 20.2 24.7 27.0 23.6 21.7 13.4 15.6 18.9 15.9 263.4 Mean Rain Days 4.0 4.5 4.4 5.3 6.9 9.0 9.2 7.7 5.3 4.3 4.1 3.7 68.0