Valbrona weather: 16-day forecast
Today in Valbrona: cloudy, 22° by day and 16° at night, 3% chance of rain. Next 7 days: 1 day with rain likely; warmest on Wednesday at 22°. A normal September day here reaches 21°.
- Wed 30/0922° 16°3%
- Thu 01/1020° 17°20%
- Fri 02/1020° 17°19%
- Sat 03/1020° 16°1%
- Sun 04/1020° 13°12%
- Mon 05/1020° 11°16%
- Tue 06/1020° 11°18%
Water22.9 °CThu 22.8°Fri 22.8°
Modelled at 1 m depth, not measured · Eawag Alplakes · as of 2026-09-30 · One value for the whole lake: the model has no town-by-town detail here.
Days 8–16 (less certain)
- Wed 07/1021° 13°25%
- Thu 08/1017° 13°29% · 1.5 mm
- Fri 09/1015° 11°19%
- Sat 10/1017° 10°16%
- Sun 11/1019° 10°27%
- Mon 12/1016° 9°29%
- Tue 13/1017° 10°33%
- Wed 14/1014° 3°– · 9.5 mm
- Thu 15/100° 0°–
Forecast as of 2026-09-30 · Open-Meteo (CC BY 4.0)
Valbrona climate by month
July is the warmest month in Valbrona (around 26° by day); May has the most rain days (about 19).
| Month | Day | Night | Rain days (≥1 mm) | Rain |
|---|---|---|---|---|
| January | 7° | 1° | 8 | 59 mm |
| February | 9° | 2° | 8 | 77 mm |
| March | 11° | 3° | 11 | 107 mm |
| April | 15° | 6° | 13 | 142 mm |
| May | 18° | 10° | 19 | 187 mm |
| June | 24° | 15° | 15 | 187 mm |
| July | 26° | 18° | 14 | 170 mm |
| August | 25° | 18° | 13 | 199 mm |
| September | 21° | 14° | 13 | 147 mm |
| October | 16° | 10° | 11 | 192 mm |
| November | 11° | 5° | 12 | 142 mm |
| December | 8° | 2° | 8 | 82 mm |
Averages 2016–2025 from reanalysis data (Open-Meteo); a single year can differ a lot.
Averages 2016–2025, Open-Meteo archive (ERA5).