Evapotranspiration Calculations

Pyrenees (Ben Nevis) - 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	5.5	0.0		20.6	6.3	86	42	4.92	31.93
02/01/2026	7.3	0.0		26.9	12.1	55	31	4.46	31.27
03/01/2026	7.4	0.0		29.4	14.9	98	20	5.90	24.62
04/01/2026	5.8	0.0		22.6	9.7	99	38	4.88	31.75
05/01/2026	6.9	0.0		23.3	8.8	61	29	5.65	31.75
06/01/2026	7.5	0.0		31.8	13.2	56	25	2.92	31.71
07/01/2026	11.3	0.0		37.5	21.4	41	12	6.08	28.99
08/01/2026	8.9	0.0		31.5	23.1	37	20	5.12	25.32
09/01/2026	11.3	0.0		36.9	24.8	44	15	7.13	23.59
Totals:	71.9	0.0

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