Home › Graubünden › Lake St. Moritz
Graubünden, 1768 m · continuously updated
Lake water: 7.0 °C at the surface Simstrat model · Alplakes, Eawag · 14.11. 11h
Temperature · last 4 and next 28 hours
Updated hourly.
Two-week trend.
Sunrise –, golden light until –
Sunset –, golden light from –
–
European index, measured continuously.
Daily maximum — protection advised from 3.
Snow settles about 300 m below it.
Neighbouring municipalities, as the crow flies.
Today (Saturday 14 Nov) in Lake St. Moritz: overcast, −6 to 4 °C, precipitation 0.0 mm (0 %), wind up to 6 km/h. Tomorrow: overcast, −4 to 4 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | overcast | −6 °C | 4 °C | 0.0 mm | 6 km/h |
| Tomorrow | overcast | −4 °C | 4 °C | 0.0 mm | 8 km/h |
| Mon 16 Nov | light snow | −2 °C | 2 °C | 1.6 mm | 7 km/h |
| Tue 17 Nov | light rain | −1 °C | 5 °C | 0.7 mm | 13 km/h |
| Wed 18 Nov | rain | 0 °C | 3 °C | 2.1 mm | 15 km/h |
| Thu 19 Nov | light snow | −3 °C | 4 °C | 0.8 mm | 14 km/h |
| Fri 20 Nov | snow showers | −8 °C | 0 °C | 2.2 mm | 13 km/h |
No rain expected in Lake St. Moritz today or tomorrow. The 15-minute detail for the next two hours is shown on demand.
Saturday 14 Nov in Lake St. Moritz, hour by hour: sunny in the morning, sunny in the afternoon, mostly sunny in the evening. Low −6 °C around 07:00, high 4 °C around 14:00. No rainy hour.
| Time | Weather | Temp. | Precip. | Wind |
|---|---|---|---|---|
| 00:00 | sunny | −4 °C | 0.0 mm | 3 km/h |
| 01:00 | sunny | −5 °C | 0.0 mm | 5 km/h |
| 02:00 | sunny | −5 °C | 0.0 mm | 4 km/h |
| 03:00 | sunny | −5 °C | 0.0 mm | 4 km/h |
| 04:00 | sunny | −6 °C | 0.0 mm | 5 km/h |
| 05:00 | sunny | −6 °C | 0.0 mm | 3 km/h |
| 06:00 | sunny | −6 °C | 0.0 mm | 3 km/h |
| 07:00 | sunny | −6 °C | 0.0 mm | 2 km/h |
| 08:00 | sunny | −6 °C | 0.0 mm | 1 km/h |
| 09:00 | sunny | −5 °C | 0.0 mm | 1 km/h |
| 10:00 | sunny | −4 °C | 0.0 mm | 0 km/h |
| 11:00 | sunny | −2 °C | 0.0 mm | 1 km/h |
| 12:00 | sunny | 1 °C | 0.0 mm | 1 km/h |
| 13:00 | sunny | 3 °C | 0.0 mm | 4 km/h |
| 14:00 | sunny | 4 °C | 0.0 mm | 6 km/h |
| 15:00 | sunny | 3 °C | 0.0 mm | 6 km/h |
| 16:00 | sunny | 2 °C | 0.0 mm | 6 km/h |
| 17:00 | sunny | 0 °C | 0.0 mm | 3 km/h |
| 18:00 | sunny | −2 °C | 0.0 mm | 3 km/h |
| 19:00 | mostly sunny | −3 °C | 0.0 mm | 4 km/h |
| 20:00 | mostly sunny | −4 °C | 0.0 mm | 4 km/h |
| 21:00 | overcast | −4 °C | 0.0 mm | 4 km/h |
| 22:00 | overcast | −4 °C | 0.0 mm | 4 km/h |
| 23:00 | overcast | −4 °C | 0.0 mm | 4 km/h |
Today, Saturday 14 Nov in Lake St. Moritz: overcast, −6 to 4 °C, wind up to 6 km/h. No precipitation expected.
Tomorrow, Sunday 15 Nov, in Lake St. Moritz: overcast, −4 to 4 °C, wind up to 8 km/h. No precipitation expected.
Today in Lake St. Moritz (1768 m): −6 to 4 °C. Tomorrow: −4 to 4 °C. Over the next 7 days, highs range from 0 to 5 °C, averaging 3 °C.
This weekend in Lake St. Moritz: Saturday overcast, −6 to 4 °C; Sunday overcast, −4 to 4 °C.
Yes: 3 days with precipitation are expected in Lake St. Moritz over the next 7 days, 7.4 mm in total. Wettest day: Friday 20 Nov (2.2 mm).
Snowfall expected in Lake St. Moritz (1768 m): Monday 16 Nov and Friday 20 Nov. Estimated total: 2.0 cm.
Today in Lake St. Moritz (1768 m), the UV index peaks at 3 (low) around midday. No particular protection is needed. In the mountains, radiation rises by about 10 % per 1,000 m, and snow reflects up to 80 % of it.
The best day of the next 7 in Lake St. Moritz: Sunday 15 Nov, overcast, up to 4 °C.
In Lake St. Moritz (1768 m), the mean annual temperature is 2.4 °C. The warmest month is July (11.8 °C on average) and the coldest January (−7.3 °C). About 747 mm of precipitation falls per year, peaking in August (100 mm) with a minimum in February (24 mm). The sun shines for about 1766 hours a year, mostly in July (199 h). On average there are 221 frost days per year. The mean monthly maximum reaches 23.2 °C and the absolute minimum −23.7 °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 | −7.3 °C | 5.7 °C | −23.7 °C | 34 | 120 | 31 | 0 |
| Feb | −6.5 °C | 7.3 °C | −23.6 °C | 24 | 121 | 28 | 0 |
| Mar | −2.4 °C | 9.9 °C | −19.1 °C | 30 | 147 | 30 | 0 |
| Apr | 1.5 °C | 13.4 °C | −12.3 °C | 44 | 150 | 26 | 0 |
| May | 6.2 °C | 18.0 °C | −5.5 °C | 71 | 164 | 13 | 0 |
| Jun | 9.9 °C | 22.0 °C | −2.0 °C | 91 | 186 | 4 | 0 |
| Jul | 11.8 °C | 23.2 °C | −0.0 °C | 86 | 199 | 1 | 1 |
| Aug | 11.6 °C | 22.8 °C | −0.4 °C | 100 | 181 | 2 | 1 |
| Sep | 7.7 °C | 19.1 °C | −4.3 °C | 74 | 155 | 9 | 0 |
| Oct | 3.8 °C | 16.1 °C | −9.3 °C | 79 | 138 | 20 | 0 |
| Nov | −1.5 °C | 11.6 °C | −16.1 °C | 74 | 103 | 27 | 0 |
| Dec | −5.8 °C | 6.3 °C | −21.3 °C | 41 | 102 | 31 | 0 |
| Year | 2.4 °C | 23.2 °C | −23.7 °C | 747 | 1766 | 221 | 3 |
At 1768 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.
Characteristic winds: Malojawind, thermische Winde. Storm warnings on Swiss lakes are signalled by flashing lights (40 flashes/min = caution, 90 = storm).
The warmest month in Lake St. Moritz is July, averaging 11.8 °C (1991–2020 normal). The coldest is January at −7.3 °C.
Lake St. Moritz receives about 747 mm of precipitation a year. The wettest month is August (100 mm), the driest February (24 mm).
For warmth and sunshine: July (11.8 °C on average, 199 h of sun). The coldest month is January (−7.3 °C). Check the 15-day forecast above for your dates.
Source: MeteoSwiss open data (1991–2020 normals) — stations Samedan (5 km, 1709 m), Piz Corvatsch (8 km, 3294 m), Segl-Maria (9 km, 1804 m), adjusted to the elevation of Lake St. Moritz (1768 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.