About Tannay
Tannay is a Swiss municipality located in the canton of Vaud (VD), at 46.311° latitude and 6.172° longitude. The municipality is part of the Lake Geneva region, temperate climate with lake influence, mild winters and warm summers. Also known as Tannay, Tannay benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Tannay
The climate in Tannay 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 Tannay and neighboring municipalities.
On this page you will find the detailed weather forecast for Tannay: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Tannay: 1991–2020 normals
In Tannay (420 m), the mean annual temperature is 11.1 °C. The warmest month is July (20.3 °C on average) and the coldest January (2.6 °C). About 1001 mm of precipitation falls per year, peaking in December (100 mm) with a minimum in February (64 mm). The sun shines for about 1940 hours a year, mostly in July (269 h). On average there are 66 frost days and 16 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.5 °C and the absolute minimum −6.5 °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 | 2.6 °C | 12.4 °C | −6.5 °C | 82 | 66 | 19 | 0 |
| Feb | 3.2 °C | 14.3 °C | −6.0 °C | 64 | 103 | 16 | 0 |
| Mar | 6.8 °C | 18.8 °C | −3.2 °C | 69 | 168 | 8 | 0 |
| Apr | 10.3 °C | 22.9 °C | −0.4 °C | 69 | 193 | 1 | 1 |
| May | 14.4 °C | 27.2 °C | 3.7 °C | 84 | 215 | 0 | 4 |
| Jun | 18.2 °C | 30.9 °C | 7.6 °C | 85 | 245 | 0 | 13 |
| Jul | 20.3 °C | 32.5 °C | 9.9 °C | 83 | 269 | 0 | 20 |
| Aug | 19.9 °C | 32.0 °C | 9.3 °C | 83 | 245 | 0 | 18 |
| Sep | 15.7 °C | 27.1 °C | 5.8 °C | 88 | 191 | 0 | 5 |
| Oct | 11.5 °C | 22.2 °C | 1.7 °C | 99 | 123 | 1 | 0 |
| Nov | 6.4 °C | 16.9 °C | −2.6 °C | 94 | 70 | 6 | 0 |
| Dec | 3.4 °C | 13.0 °C | −5.5 °C | 100 | 52 | 15 | 0 |
| Year | 11.1 °C | 32.5 °C | −6.5 °C | 1001 | 1940 | 66 | 61 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Genève / Cointrin (8 km, 411 m), Nyon / Changins (11 km, 458 m), La Dôle (14 km, 1670 m), adjusted to the elevation of Tannay (420 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Tannay:
- Weather Commugny
- Weather Coppet
- Weather Mies
- Weather Versoix
- Weather Founex
- Weather Chavannes-des-Bois
- Weather Chavannes-de-Bogis
- Weather Céligny
- Weather Bogis-Bossey
- Weather Collex-Bossy
- Weather Genthod
- Weather Hermance
Frequently asked questions about weather in Tannay
What is the weather in Tannay today?
At the top of the page you will find the current temperature, precipitation and wind in Tannay, updated in real time.
What is the 15-day forecast for Tannay?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Tannay.
Will it rain tomorrow in Tannay?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Tannay.
What is the air quality in Tannay?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Tannay.
Are there weather alerts for Tannay?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Tannay located?
Tannay sits at around 420 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 Tannay?
The warmest month in Tannay is July, averaging 20.3 °C (1991–2020 normal). The coldest is January at 2.6 °C.
How much does it rain in Tannay per year?
Tannay receives about 1001 mm of precipitation a year. The wettest month is December (100 mm), the driest February (64 mm).
When is the best time to visit Tannay?
For warmth and sunshine: July (20.3 °C on average, 269 h of sun). The coldest month is January (2.6 °C). Check the 15-day forecast above for your dates.