Evapotranspiration Calculations

Colac (Mount Gellibrand) - January 2026 daily calculations

Date	Evapotrans- piration (mm) 0000- 2400	Rain (mm) 0900- 0900	Pan Evaporation (mm) 0900- 0900	Max Temp	Min Temp	Max Rel Hum (%)	Min Rel Hum (%)	Average 10m Wind Speed (m/sec)	Solar Radiation (MJ/sq m)
01/01/2026				22.3		98	44	5.33	30.87
02/01/2026	5.6	0.0		24.1	9.8	98	49	6.53	30.58
03/01/2026	6.3	0.0		29.9	13.4	100	39	5.58	23.15
04/01/2026	5.6	0.0		24.2	13.8	93	35	4.89	24.76
05/01/2026	5.9	0.0		26.9	9.1	98	32	2.53	30.51
06/01/2026	7.0	0.0		32.1	10.4	100	30	3.12	30.34
07/01/2026	14.0	0.0		42.7	14.8	83	14	8.64	25.14
08/01/2026	8.2	0.0		32.9	21.3	76	31	6.22	23.84
09/01/2026	13.5	0.0		41.3	14.1	86	16	10.76	14.69
Totals:	66.1	0.0

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