About Syens
Syens is a Swiss municipality located in the canton of Vaud (VD), at 46.642° latitude and 6.777° longitude. The municipality is part of the Lake Geneva region, temperate climate with lake influence, mild winters and warm summers. Also known as Syens, Syens benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Syens
The climate in Syens is characteristic of the Lake Geneva region, temperate climate with lake influence, mild winters and warm summers. Temperatures, precipitation and wind conditions vary throughout the year with local features linked to altitude and surrounding terrain. Our data comes from official weather stations and real-time Netatmo sensors for Syens and neighboring municipalities.
On this page you will find the detailed weather forecast for Syens: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Syens: 1991–2020 normals
In Syens (599 m), the mean annual temperature is 10.1 °C. The warmest month is July (18.9 °C on average) and the coldest January (2.3 °C). About 917 mm of precipitation falls per year, peaking in August (96 mm) with a minimum in February (50 mm). The sun shines for about 1923 hours a year, mostly in July (255 h). On average there are 59 frost days and 10 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) | Sunshine (h) | Frost days | Summer days |
|---|---|---|---|---|---|---|---|
| Jan | 2.3 °C | 11.4 °C | −7.2 °C | 58 | 73 | 15 | 0 |
| Feb | 2.6 °C | 12.8 °C | −7.1 °C | 50 | 102 | 13 | 0 |
| Mar | 5.7 °C | 17.1 °C | −4.4 °C | 54 | 165 | 9 | 0 |
| Apr | 9.1 °C | 21.2 °C | −1.4 °C | 65 | 189 | 2 | 0 |
| May | 13.2 °C | 25.7 °C | 3.0 °C | 91 | 204 | 0 | 4 |
| Jun | 16.9 °C | 29.2 °C | 6.6 °C | 92 | 237 | 0 | 12 |
| Jul | 18.9 °C | 30.7 °C | 8.9 °C | 90 | 255 | 0 | 18 |
| Aug | 18.6 °C | 29.8 °C | 8.3 °C | 96 | 239 | 0 | 16 |
| Sep | 14.6 °C | 24.9 °C | 4.8 °C | 81 | 196 | 0 | 3 |
| Oct | 10.8 °C | 21.0 °C | 1.1 °C | 87 | 132 | 1 | 0 |
| Nov | 5.9 °C | 16.0 °C | −3.1 °C | 74 | 79 | 6 | 0 |
| Dec | 3.0 °C | 12.1 °C | −6.2 °C | 78 | 52 | 12 | 0 |
| Year | 10.1 °C | 30.7 °C | −7.2 °C | 917 | 1923 | 59 | 52 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Pully (17 km, 456 m), Mathod (19 km, 435 m), Le Moléson (21 km, 1974 m), adjusted to the elevation of Syens (599 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Syens:
- Weather Rossenges
- Weather Vucherens
- Weather Rue
- Weather Hermenches
- Weather Moudon
- Weather Ropraz
- Weather Ursy
- Weather Vulliens
- Weather Chavannes-sur-Moudon
- Weather Jorat-Menthue
- Weather Jorat-Mézières
- Weather Bussy-sur-Moudon
Frequently asked questions about weather in Syens
What is the weather in Syens today?
At the top of the page you will find the current temperature, precipitation and wind in Syens, updated in real time.
What is the 15-day forecast for Syens?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Syens.
Will it rain tomorrow in Syens?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Syens.
What is the air quality in Syens?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Syens.
Are there weather alerts for Syens?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Syens located?
Syens sits at around 599 m above sea level in the canton of Vaud. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Syens?
The warmest month in Syens is July, averaging 18.9 °C (1991–2020 normal). The coldest is January at 2.3 °C.
How much does it rain in Syens per year?
Syens receives about 917 mm of precipitation a year. The wettest month is August (96 mm), the driest February (50 mm).
When is the best time to visit Syens?
For warmth and sunshine: July (18.9 °C on average, 255 h of sun). The coldest month is January (2.3 °C). Check the 15-day forecast above for your dates.