Evapotranspiration Calculations

Pyrenees (Ben Nevis) - January 2026 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)
01/01/20265.50.0 20.66.386424.9231.93
02/01/20267.30.0 26.912.155314.4631.27
03/01/20267.40.0 29.414.998205.9024.62
04/01/20265.80.0 22.69.799384.8831.75
05/01/20266.90.0 23.38.861295.6531.75
06/01/20267.50.0 31.813.256252.9231.71
07/01/202611.30.0 37.521.441126.0828.99
08/01/20268.90.0 31.523.137205.1225.32
09/01/202611.30.0 36.924.844157.1323.59
10/01/20265.30.0 21.39.896376.4425.87
11/01/20264.70.0 17.16.198396.2029.33
12/01/20266.30.0 24.97.180304.7328.09
13/01/20265.70.0 22.611.484454.2830.75
14/01/20265.40.0 23.99.893464.5828.25
15/01/20263.40.0 18.812.199595.0718.02
16/01/20263.82.0 18.611.199657.8324.53
17/01/20265.60.2 23.810.896447.2026.50
18/01/20266.40.0 28.013.677375.1623.67
19/01/20266.00.0 24.714.471377.3118.01
20/01/20266.52.0 27.415.475334.0826.73
21/01/20264.90.0 20.811.499466.4926.76
22/01/20265.00.2 18.35.599366.3329.72
23/01/20266.80.0 27.07.285153.7830.09
24/01/20269.00.0 35.712.531113.7629.68
25/01/20267.40.0 28.822.964213.5829.23
26/01/20269.00.0 35.917.42823.5129.57
27/01/202613.50.0 41.025.937117.8126.95
28/01/20268.10.0 29.518.175297.1826.74
29/01/20267.00.0 27.714.646175.1716.89
30/01/20269.10.0 35.019.356245.8724.71
Totals:210.84.4       

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