Lake Joux
Lake Joux is a Swiss lake (Vaud) at 1004 m, covering 9.5 km² with a maximum depth of 34 m. Typical winds: bise (NE), vent (SW), joran. Main shores and access points: Le Pont, Le Sentier, L'Abbaye, Le Rocheray, Les Charbonnières. The weather above is computed over the middle of the lake; the “Wind on the lake” section details hourly speed, gusts and direction — for sailing, windsurfing, paddling, fishing or swimming.
Climate of Lake Joux: 1991–2020 normals
In Lake Joux (1004 m), the mean annual temperature is 7.5 °C. The warmest month is July (16.4 °C on average) and the coldest January (−0.5 °C). About 1170 mm of precipitation falls per year, peaking in December (120 mm) with a minimum in February (77 mm). The mean monthly maximum reaches 28.8 °C and the absolute minimum −10.2 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) |
|---|---|---|---|---|
| Jan | −0.5 °C | 9.1 °C | −10.2 °C | 96 |
| Feb | −0.1 °C | 10.7 °C | −10.0 °C | 77 |
| Mar | 3.1 °C | 15.0 °C | −7.2 °C | 78 |
| Apr | 6.6 °C | 19.2 °C | −4.4 °C | 78 |
| May | 10.7 °C | 23.6 °C | −0.1 °C | 102 |
| Jun | 14.4 °C | 27.1 °C | 3.6 °C | 103 |
| Jul | 16.4 °C | 28.8 °C | 5.7 °C | 100 |
| Aug | 16.0 °C | 28.0 °C | 5.1 °C | 101 |
| Sep | 12.0 °C | 23.0 °C | 1.6 °C | 98 |
| Oct | 8.0 °C | 18.9 °C | −2.1 °C | 113 |
| Nov | 3.1 °C | 13.5 °C | −6.3 °C | 104 |
| Dec | 0.2 °C | 9.9 °C | −9.4 °C | 120 |
| Year | 7.5 °C | 28.8 °C | −10.2 °C | 1170 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Mathod (25 km, 435 m), Nyon / Changins (26 km, 458 m), La Dôle (27 km, 1670 m), adjusted to the elevation of Lake Joux (1004 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Swiss lakes
- Weather Lake Geneva (29 km · 372 m)
- Weather Lake Neuchâtel (53 km · 429 m)
- Weather Lake Tanay (53 km · 1408 m)
- Weather Lake Gruyère (63 km · 677 m)
- Weather Lake Murten (69 km · 429 m)
- Weather Schwarzsee (Lac Noir) (76 km · 1046 m)
Nearby municipalities
- Weather Le Chenit (4 km)
- Weather Le Lieu (6 km)
- Weather L'Abbaye (6 km)
- Weather Montricher (7 km)
- Weather Berolle (8 km)
- Weather Mollens (VD) (9 km)
- Weather Mont-la-Ville (9 km)
- Weather Vaulion (9 km)
Frequently asked questions about the weather: Lake Joux
What is the wind like on Lake Joux today?
The “Wind on the lake” section shows hourly average wind speed, gusts and direction for the next 24 hours, computed over the lake (1004 m).
Can you swim in Lake Joux?
At 1004 m the water stays cold all year (often below 15 °C in summer): swimming is for the brave, mostly in July–August. Check the air temperature, sunshine and UV index above to pick your slot.
What are the typical winds on Lake Joux?
Characteristic winds: bise (NE), vent (SW), joran. Storm warnings on Swiss lakes are signalled by flashing lights (40 flashes/min = caution, 90 = storm).
What is the warmest month in Lake Joux?
The warmest month in Lake Joux is July, averaging 16.4 °C (1991–2020 normal). The coldest is January at −0.5 °C.
How much does it rain in Lake Joux per year?
Lake Joux receives about 1170 mm of precipitation a year. The wettest month is December (120 mm), the driest February (77 mm).
When is the best time to visit Lake Joux?
For warmth and sunshine: July (16.4 °C on average, — h of sun). The coldest month is January (−0.5 °C). Check the 15-day forecast above for your dates.