Wednesday15. May | Thursday16. May | Friday17. May | Saturday18. May | Sunday19. May | Monday20. May | Tuesday21. May | Wednesday22. May | Thursday23. May | Friday24. May | |
3 hourly | 3 hourly | 3 hourly | 3 hourly | 3 hourly | 3 hourly | 3 hourly | 3 hourly | 3 hourly | 3 hourly | |
weather | ||||||||||
Temperature | 17 °C | 17 °C | 19 °C | 19 °C | 23 °C | 23 °C | 20 °C | 20 °C | 21 °C | 24 °C |
12 °C | 9 °C | 8 °C | 7 °C | 6 °C | 8 °C | 12 °C | 12 °C | 12 °C | 11 °C | |
Sunshine | 1.2 h | 3.0 h | 7.9 h | 4.4 h | 9.8 h | 6.1 h | 0.9 h | 0.6 h | 2.2 h | 6.5 h |
10 % | 20 % | 55 % | 30 % | 65 % | 40 % | 5 % | 5 % | 15 % | 45 % | |
precipitation | 0 - 1 mm | 8 - 13 mm | 3 - 6 mm | 3 - 5 mm | 0 - 1 mm | 0 - 2 mm | 1 - 3 mm | 2 - 6 mm | 3 - 6 mm | 2 - 3 mm |
95 % | 100 % | 95 % | 95 % | 60 % | 50 % | 90 % | 85 % | 85 % | 75 % | |
Wind | 15 km/h | 5 km/h | 5 km/h | 5 km/h | 5 km/h | 5 km/h | 5 km/h | 5 km/h | 5 km/h | 5 km/h |
45 km/h | 25 km/h | 25 km/h | 25 km/h | 30 km/h | 30 km/h | 25 km/h | 20 km/h | 25 km/h | 25 km/h | |
Freezing level | 2700 m | 2500 m | 2400 m | 2700 m | 2900 m | 3100 m | 3100 m | 3100 m | 3300 m | 3500 m |
UV index | 2 | 6 | 5 | 7 | 9 | 8 | 5 | 4 | 3 | 7 |
A few areas of showers, sometimes of a thundery nature, moving up in a southerly flow at high altitude until next night over the Chablais. Less activity in the central and upper Valais, but conditions will not necessarily remain dry throughout the period.
On Thursday, fairly cloudy skies overall, despite a more pronounced tendency towards clear skies between the morning and early afternoon. The atmosphere will remain unstable, favouring the reactivation of a few areas of showers, mainly between the afternoon and evening and close to the higher ground. A few thunderclaps not ruled out in the Chablais. Cool for the season.
Temperatures forecast for the Rhône plain: lows 10° to 11°, highs 16° to 18°. In stations around 1500m: lows 4 to 5°, highs 9 to 11°. On the summits: 2/7° at 2000m, -4/-2° at 3000m. Isotherm of 0°: 2500 m.
Light to moderate breeze during the day on the Rhône plain. Strong westerly wind in the high mountains (peak winds sometimes exceeding 50 km/h at around 2500m).
(MeteoNews, 15 May, 3 pm)Nicolas Borgognon; Wednesday, 15. May 2024, 15 Uhr
Friday will see the first step towards a relative improvement, with sunny spells lasting for long periods in the lowlands. However, the atmosphere will remain unstable and clouds will tend to reappear in the afternoon near the higher ground, in the form of a few showers or even thunder. 18° to 20°.
For the Whitsun weekend (including Monday), the weather will improve relatively, with fairly generous sunshine over the lowland regions. The air will remain moderately unstable, however, favouring cloudy developments over the higher ground in the afternoons, leading to a few showers, sometimes of a thundery nature. Maximum temperatures around 20 to 22° and 10 to 13° at around 1500 m. There is a tendency for föhn at the end of the period.
From Tuesday onwards, an upper low-pressure system is likely to be present near Switzerland, favouring hazier skies and a risk of showers in all regions. Temperatures falling slightly. To be confirmed.Nicolas Borgognon; Wednesday, 15. May 2024, 15 Uhr
Varen, 15. May 2024