Meteo and climate data on the Ärlen glacier: Monthly data
The graph below shows meteoro and climate data from the MeteoSwiss measuring stations located in the vicinity of the Ärlen glacier. Monthly data.
Deviations of the annual values from the climate standard values 1991-2020
Measuring station: Grimsel Hospiz (1980m), Year 2026
The definitive deviations for this year will be displayed from 1 January 2027.
| Physical quantity | Annual value | Standard value | Deviation | Unit |
| Temperature | -5.3 | 2.3 | -7.6 | °C |
| Precipitation | 81 | 1834 | -1753 | mm |
| Sunshine duration | 65.9 | 1434.8 | -1369.0 | Std. |
| Global radiation | 86.2 | 152.7 | -66.5 | W/m2 |
Source of the basic data: MeteoSwiss
Deviations of the monthly temperature values from the climate norms 1991-2020
Measuring station: Grimsel Hospiz (1980m), Year 2026
The definitive deviations for this February 2026 will be displayed from 1 March 2026.
| month | Monthly value
°C | Standard value
°C | Deviation
°C | Data
% |
| January 2026 | -4.7 | -4.5 | -0.2 | 98.7 |
| February 2026 | -5.9 | -4.9 | -1.0 | 99.3 |
| Year 2026 | -4.7 | -4.5 | -0.2 | 98.7 |
Source of the basic data: MeteoSwiss
The more the values for «Data» deviate from 100%, the more cautiously the monthly values and deviations should be interpreted.
Deviations of the monthly precipitation values from the climate norms 1991-2020
Measuring station: Grimsel Hospiz (1980m), Year 2026
The definitive deviations for this February 2026 will be displayed from 1 March 2026.
| month | Monthly value
mm | Standard value
mm | Deviation
mm |
% | Data
% |
| January 2026 | 80.6 | 190.1 | -109.5 | -57.6 | 98.9 |
| February 2026 | 0.0 | 5.8 | -5.8 | -100.0 | 100.0 |
| Year 2026 | 80.6 | 195.9 | -115.3 | -58.9 | 98.9 |
Source of the basic data: MeteoSwiss
The more the values for «Data» deviate from 100%, the more cautiously the monthly values and deviations should be interpreted.
Deviations of the monthly sunshine duration values from the climate standard values 1991-2020
Measuring station: Grimsel Hospiz (1980m), Year 2026
The definitive deviations for this February 2026 will be displayed from 1 March 2026.
| month | Monthly value
hrs | Standard value
hrs | Deviation
hrs |
% | Data
% |
| January 2026 | 60.2 | 71.6 | -11.4 | -15.9 | 98.7 |
| February 2026 | 5.6 | 3.4 | +2.2 | +65.2 | 99.3 |
| Year 2026 | 65.9 | 75.0 | -9.2 | -12.2 | 98.7 |
Source of the basic data: MeteoSwiss
The more the values for «Data» deviate from 100%, the more cautiously the monthly values and deviations should be interpreted.
Deviations of the monthly global radidiation values from the climate norms 1991-2020
Measuring station: Grimsel Hospiz (1980m), Year 2026
The definitive deviations for this February 2026 will be displayed from 1 March 2026.
Only whole months are taken into account when calculating the total.
| month | Monthly value
W/m2
kWh/m2 | Standard value
W/m2
kWh/m2 | Deviation
W/m2
kWh/m2 |
% | Data
% |
| January 2026 | 63.8
47.5 | 62.8
46.7 | +1.0
+0.7 | +1.6 | 98.7 |
| February 2026 | 108.6
2.6 | 108.6
2.6 | 0.0
0.0 | 0.0 | 99.3 |
| Year 2026 | 65.2
50.1 | 64.2
49.3 | +1.0
+0.7 | +1.5 | 98.7 |
Source of the basic data: MeteoSwiss
The more the values for «Data» deviate from 100%, the more cautiously the monthly values and deviations should be interpreted.
Measuring station: Distance and compass direction
The measuring station Grimsel Hospiz (1980m) is located at a distance of approximately 8km from Ärlen glacier in the direction of SE.
Snow depths
The table below lists the snow depth measuring stations located in the vicinity of the Ärlen glacier. Extensive information on the development of the snow depth for various periods can be called up for each measuring station. All links lead to the website www.whiterisk.ch, which is operated by the Institute for Snow and Avalanche Research SLF.
Legend
- Distance: Approximate distance from the Ärlen glacier to the snow depth measuring station.
- Direction: Seen from the Ärlen glacier, the snow depth measuring station is in this direction.
Availability of data
We have been storing the meteor data since 1. December 2023.
Further information
Further information on the measurement data and the graphics can be found
here... (External link to www.obeng.ch, the website of Oberli Engineering GmbH)
Further links
All links point to pages on our website www.obeng.ch.