The national average April temperature was 1.1 °C below the 1991-2020 norm. The last time April 2021 was colder was 1.8 °C below the norm, April 2008 was 1.6 °C below the norm, and April 2001 was 2.5 °C below the 1991-2020 norm. All other April months since 2001 were milder on average nationwide than the current one.
At some measuring locations, April 2023 was similarly cold or slightly colder than April 2021, such as in Neuchâtel or on the Chaumont. In Sion, at 1.4 °C below normal, it was the coldest April since 2001.
April 2023 remained only slightly below the norm at measuring sites in high alpine valleys, such as Andermatt, Samedan and Segl-Maria. The April months of 2021 and 2001 were massively colder here, with more than 2 °C below the 1991-2020 norm.
In the low-lying areas of the southern side of the Alps, the April temperature was within the range of the 1991–2020 norm.
April 2023 is the first month in six months with below-average temperatures nationwide compared to the 1991-2020 norm. The last time temperatures were slightly below average was September 2022.
Line graph showing April temperatures in Switzerland
Fig. 1: The April temperature in Switzerland since measurements began in 1864. The red dot shows the current April (3.6 °C). The green dashed line shows the 1991−2020 norm (4.7 °C), the red line the 20-year moving average.
Persistently cool in the north
April was predominantly dominated by low pressure and extremely changeable weather conditions. The daily average temperature north of the Alps and in the Alps was mostly more than 1.5 °C below the 1991-2020 norm until April 26. Periodically, the values even dropped 3 to 5 °C, and in mountainous areas on individual days even 6 to 8 °C below the norm.
On the southern side of the Alps, the daily mean temperature paraguay phone number library remained significantly below average only from April 4 to 7 and on April 21 and 22. The values fell by 2 to 4 °C in many places, and in some cases even more than 5 °C below the 1991–2020 norm.
The daily maximum temperatures on the northern side of the Alps remained below 10 °C on eight days. Only three to four days reached the mild 18 °C or more range.
On the southern side of the Alps, however, the daily maximum temperatures rose above 18 °C on 17 days and above 20 °C on ten days. Biasca reported over 24 °C on 19 April. As is often the case in such locations, the mild conditions in the south were aided by the north foehn.
Plenty of fresh snow in the Northern Alps
Some fresh snow fell in the Alps on April 7 and 8, and on April 11. how to handle objections in telephone sales There was plenty of fresh snow between April 12 and 16, especially in the central and eastern Alps. The fresh snow totals alb directory reached 50 to 90 cm at higher altitudes. On the Säntis, the total snow depth settled at around 4 m in mid-April, and on the Weissfluhjoch at just under 2 m, which is only slightly below the norm for this time of year at both locations. This is after the total snow depth in the mountains last winter was mostly well below the 1991-2020 norm.
