Evapotranspiration Calculations

Sydney (Observatory Hill) - September 2025 daily calculations

DateEvapotrans-
piration (mm) 0000- 2400
Rain (mm) 0900- 0900Pan Evaporation (mm) 0900- 0900Max TempMin TempMax Rel Hum (%)Min Rel Hum (%)Average 10m Wind Speed (m/sec)Solar Radiation (MJ/sq m)
01/09/20251.90.2 20.79.382370.0017.55
02/09/20252.032.8 20.210.996520.0016.36
03/09/20252.00.0 22.510.489290.0017.91
04/09/20251.70.2 23.614.166240.0012.66
05/09/20251.80.0 19.811.274500.0013.89
06/09/20252.00.0 21.111.080470.0016.55
07/09/20252.40.0 22.311.593520.0018.48
08/09/20252.40.0 29.016.254320.0018.52
09/09/20252.12.2 26.116.189430.0014.17
10/09/20251.26.8 17.116.197760.006.26
11/09/20251.5122.0 17.59.798530.009.96
12/09/20252.38.4 21.19.691350.0019.34
13/09/20252.40.0 21.310.584510.0019.00
14/09/20252.50.0 23.911.195390.0019.30
15/09/20252.50.0 27.911.183230.0019.92
16/09/20252.20.0 27.018.754390.0014.19
17/09/20252.80.0 27.218.378260.0020.02
18/09/20252.60.2 21.211.385450.0020.43
19/09/20252.60.0 24.911.492270.0019.46
20/09/20252.83.6 22.515.987250.0020.54
Totals:43.7176.4       

Monthly Archive

Year 
2009JanFebMarAprMayJunJulAugSepOctNovDec
2010JanFebMarAprMayJunJulAugSepOctNovDec
2011JanFebMarAprMayJunJulAugSepOctNovDec
2012JanFebMarAprMayJunJulAugSepOctNovDec
2013JanFebMarAprMayJunJulAugSepOctNovDec
2014JanFebMarAprMayJunJulAugSepOctNovDec
2015JanFebMarAprMayJunJulAugSepOctNovDec
2016JanFebMarAprMayJunJulAugSepOctNovDec
2017JanFebMarAprMayJunJulAugSepOctNovDec
2018JanFebMar         
2020       AugSepOctNovDec
2021JanFebMarAprMayJunJulAugSepOctNovDec
2022JanFebMarAprMayJunJulAugSepOctNovDec
2023JanFebMarAprMayJunJulAugSepOctNovDec
2024JanFebMarAprMayJunJulAugSepOctNovDec
2025JanFebMarAprMayJunJulAugSep