Lake Greifen
Lake Greifen is a Swiss lake (Zurich) at 435 m, covering 8.5 km² with a maximum depth of 32 m. Typical winds: Westwind, Bise. Main shores and access points: Greifensee, Uster, Maur, Fällanden, Mönchaltorf. 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 Greifen: 1991–2020 normals
In Lake Greifen (435 m), the mean annual temperature is 10.5 °C. The warmest month is July (19.7 °C on average) and the coldest January (1.6 °C). About 1116 mm of precipitation falls per year, peaking in July (127 mm) with a minimum in February (62 mm). The sun shines for about 1683 hours a year, mostly in July (232 h). On average there are 73 frost days and 9 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.5 °C and the absolute minimum −7.6 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) | Sunshine (h) | Frost days | Summer days |
|---|---|---|---|---|---|---|---|
| Jan | 1.6 °C | 12.1 °C | −7.6 °C | 65 | 56 | 19 | 0 |
| Feb | 2.4 °C | 14.0 °C | −7.1 °C | 62 | 86 | 17 | 0 |
| Mar | 6.4 °C | 19.4 °C | −3.6 °C | 72 | 142 | 10 | 0 |
| Apr | 10.3 °C | 23.9 °C | −0.2 °C | 80 | 178 | 2 | 0 |
| May | 14.3 °C | 28.0 °C | 4.0 °C | 124 | 193 | 0 | 4 |
| Jun | 17.9 °C | 31.4 °C | 7.9 °C | 126 | 211 | 0 | 10 |
| Jul | 19.7 °C | 32.5 °C | 10.6 °C | 127 | 232 | 0 | 15 |
| Aug | 19.3 °C | 31.7 °C | 9.9 °C | 124 | 216 | 0 | 13 |
| Sep | 15.1 °C | 26.8 °C | 6.1 °C | 90 | 162 | 0 | 3 |
| Oct | 10.7 °C | 22.0 °C | 1.7 °C | 85 | 105 | 1 | 0 |
| Nov | 5.6 °C | 16.7 °C | −2.6 °C | 78 | 57 | 7 | 0 |
| Dec | 2.4 °C | 12.5 °C | −6.5 °C | 85 | 45 | 17 | 0 |
| Year | 10.5 °C | 32.5 °C | −7.6 °C | 1116 | 1683 | 73 | 46 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Zürich / Fluntern (9 km, 604 m), Wädenswil (14 km, 485 m), Zürich / Affoltern (15 km, 444 m), adjusted to the elevation of Lake Greifen (435 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Swiss lakes
- Weather Lake Pfäffikon (8 km · 537 m)
- Weather Lake Zurich (11 km · 406 m)
- Weather Lake Ägeri (26 km · 724 m)
- Weather Lake Zug (29 km · 413 m)
- Weather Lake Hallwil (36 km · 449 m)
- Weather Lake Klöntal (42 km · 848 m)
Nearby municipalities
- Weather Greifensee (2 km)
- Weather Fällanden (4 km)
- Weather Küsnacht (ZH) (4 km)
- Weather Uster (4 km)
- Weather Maur (4 km)
- Weather Zumikon (4 km)
- Weather Schwerzenbach (5 km)
- Weather Egg (5 km)
Swiss lakes Weather Greifensee
Frequently asked questions about the weather: Lake Greifen
What is the wind like on Lake Greifen today?
The “Wind on the lake” section shows hourly average wind speed, gusts and direction for the next 24 hours, computed over the lake (435 m).
Can you swim in Lake Greifen?
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 Greifen?
Characteristic winds: Westwind, Bise. Storm warnings on Swiss lakes are signalled by flashing lights (40 flashes/min = caution, 90 = storm).
What is the warmest month in Lake Greifen?
The warmest month in Lake Greifen is July, averaging 19.7 °C (1991–2020 normal). The coldest is January at 1.6 °C.
How much does it rain in Lake Greifen per year?
Lake Greifen receives about 1116 mm of precipitation a year. The wettest month is July (127 mm), the driest February (62 mm).
When is the best time to visit Lake Greifen?
For warmth and sunshine: July (19.7 °C on average, 232 h of sun). The coldest month is January (1.6 °C). Check the 15-day forecast above for your dates.