Lake Biel
Lake Biel is a Swiss lake (Bern, Neuchâtel) at 429 m, covering 39 km² with a maximum depth of 74 m. Typical winds: joran (NW), bise (NE). Main shores and access points: Biel/Bienne, La Neuveville, Erlach, Ligerz, Twann, Île Saint-Pierre. 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 Biel: 1991–2020 normals
In Lake Biel (429 m), the mean annual temperature is 10.3 °C. The warmest month is July (19.0 °C on average) and the coldest January (2.3 °C). About 919 mm of precipitation falls per year, peaking in August (94 mm) with a minimum in March (62 mm). On average there are 75 frost days and 11 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 30.7 °C and the absolute minimum −7.2 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) | Frost days | Summer days |
|---|---|---|---|---|---|---|
| Jan | 2.3 °C | 12.0 °C | −7.2 °C | 68 | 19 | 0 |
| Feb | 2.7 °C | 13.4 °C | −6.8 °C | 63 | 17 | 0 |
| Mar | 5.9 °C | 17.6 °C | −4.0 °C | 62 | 11 | 0 |
| Apr | 9.5 °C | 21.8 °C | −1.0 °C | 65 | 2 | 1 |
| May | 13.6 °C | 26.3 °C | 3.4 °C | 87 | 0 | 4 |
| Jun | 17.2 °C | 29.5 °C | 6.8 °C | 88 | 0 | 11 |
| Jul | 19.0 °C | 30.7 °C | 9.2 °C | 92 | 0 | 17 |
| Aug | 18.7 °C | 30.1 °C | 8.4 °C | 94 | 0 | 14 |
| Sep | 14.7 °C | 25.4 °C | 5.2 °C | 72 | 0 | 3 |
| Oct | 10.8 °C | 21.2 °C | 1.1 °C | 76 | 1 | 0 |
| Nov | 6.1 °C | 16.1 °C | −3.1 °C | 71 | 8 | 0 |
| Dec | 3.1 °C | 12.6 °C | −6.5 °C | 80 | 16 | 0 |
| Year | 10.3 °C | 30.7 °C | −7.2 °C | 919 | 75 | 51 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Cressier (9 km, 430 m), Chasseral (10 km, 1594 m), Mühleberg (14 km, 480 m), adjusted to the elevation of Lake Biel (429 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Swiss lakes
- Weather Lake Murten (18 km · 429 m)
- Weather Lake Neuchâtel (31 km · 429 m)
- Weather Lake Gruyère (43 km · 677 m)
- Weather Schwarzsee (Lac Noir) (46 km · 1046 m)
- Weather Lake Thun (61 km · 558 m)
- Weather Blausee (72 km · 887 m)
Nearby municipalities
- Weather Ligerz (2 km)
- Weather Lüscherz (2 km)
- Weather Hagneck (3 km)
- Weather Täuffelen (3 km)
- Weather La Neuveville (3 km)
- Weather Mörigen (3 km)
- Weather Epsach (4 km)
- Weather Sutz-Lattrigen (4 km)
Frequently asked questions about the weather: Lake Biel
What is the wind like on Lake Biel today?
The “Wind on the lake” section shows hourly average wind speed, gusts and direction for the next 24 hours, computed over the lake (429 m).
Can you swim in Lake Biel?
In summer (June to September) lowland lakes usually reach 18–24 °C at the surface; there are many public beaches and lidos. Check the air temperature, sunshine and UV index above to pick your slot.
What are the typical winds on Lake Biel?
Characteristic winds: joran (NW), bise (NE). Storm warnings on Swiss lakes are signalled by flashing lights (40 flashes/min = caution, 90 = storm).
What is the warmest month in Lake Biel?
The warmest month in Lake Biel is July, averaging 19.0 °C (1991–2020 normal). The coldest is January at 2.3 °C.
How much does it rain in Lake Biel per year?
Lake Biel receives about 919 mm of precipitation a year. The wettest month is August (94 mm), the driest March (62 mm).
When is the best time to visit Lake Biel?
For warmth and sunshine: July (19.0 °C on average, — h of sun). The coldest month is January (2.3 °C). Check the 15-day forecast above for your dates.