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Weather in Thônex

Geneva, 423 m · continuously updated

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Arve: 8.7 °C at Genève, Bout du Monde river temperature · FOEN gauge 4.1 km away · 01.11. 13h

Temperature · last 4 and next 28 hours

Thônex weather: the next 24 hours

Updated hourly.

Thônex weather hour by hour (48 h)

Thônex 15-day forecast

Two-week trend.

Thônex weekend weatherRain radar

Sun and golden hours

Sunrise –, golden light until –

Sunset –, golden light from –

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Air quality

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European index, measured continuously.

UV index

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Daily maximum — protection advised from 3.

Freezing level

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Snow settles about 300 m below it.

Around Thônex

Neighbouring municipalities, as the crow flies.

7-day forecast for Thônex

Today (Saturday 14 Nov) in Thônex: light rain, 4 to 8 °C, precipitation 0.4 mm (22 %), wind up to 13 km/h. Tomorrow: rain, 6 to 15 °C.

Show the 7-day table
DayWeatherMinMaxPrecip.Wind
Todaylight rain4 °C8 °C0.4 mm13 km/h
Tomorrowrain6 °C15 °C14.4 mm26 km/h
Mon 16 Novshowers9 °C12 °C1.2 mm26 km/h
Tue 17 Novrain10 °C15 °C10.3 mm28 km/h
Wed 18 Novlight rain11 °C13 °C6.3 mm27 km/h
Thu 19 Novlight rain10 °C13 °C7.3 mm25 km/h
Fri 20 Novlight rain4 °C9 °C3.2 mm25 km/h

Forecast updated on 14.11.2026 at 11:34 (Open-Meteo model, elevation 423 m). The interactive block at the top refreshes hourly and covers 16 days.

Today in Thônex: rain from 22:00 to 00:00, 0.4 mm in total. The rest of the day should stay dry. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Thônex

Saturday 14 Nov in Thônex, hour by hour: partly cloudy in the morning, partly cloudy in the afternoon, overcast in the evening. Low 4 °C around 08:00, high 8 °C around 15:00. Rain from 22:00 to 00:00.

Show the 24-hour table
TimeWeatherTemp.Precip.Wind
00:00overcast5 °C0.0 mm13 km/h
01:00overcast5 °C0.0 mm13 km/h
02:00overcast5 °C0.0 mm12 km/h
03:00overcast4 °C0.0 mm10 km/h
04:00overcast4 °C0.0 mm10 km/h
05:00overcast4 °C0.0 mm11 km/h
06:00overcast4 °C0.0 mm12 km/h
07:00partly cloudy4 °C0.0 mm12 km/h
08:00partly cloudy4 °C0.0 mm9 km/h
09:00partly cloudy4 °C0.0 mm8 km/h
10:00partly cloudy4 °C0.0 mm10 km/h
11:00partly cloudy5 °C0.0 mm9 km/h
12:00partly cloudy6 °C0.0 mm8 km/h
13:00partly cloudy7 °C0.0 mm8 km/h
14:00partly cloudy8 °C0.0 mm8 km/h
15:00partly cloudy8 °C0.0 mm7 km/h
16:00overcast8 °C0.0 mm6 km/h
17:00overcast7 °C0.0 mm5 km/h
18:00overcast6 °C0.0 mm2 km/h
19:00overcast6 °C0.0 mm1 km/h
20:00overcast6 °C0.0 mm2 km/h
21:00overcast6 °C0.0 mm1 km/h
22:00light rain6 °C0.1 mm2 km/h
23:00light rain6 °C0.3 mm1 km/h

Hourly forecast issued 14.11.2026 for Thônex (423 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Weather today in Thônex

Today, Saturday 14 Nov in Thônex: light rain, 4 to 8 °C, wind up to 13 km/h. Precipitation expected: 0.4 mm, 22 % probability. A day in line with the climate normal for November in Thônex (6.3 °C average over 1991-2020).

Thônex weather tomorrow

Tomorrow, Sunday 15 Nov, in Thônex: rain, 6 to 15 °C, wind up to 26 km/h. Precipitation expected: 14.4 mm, 100 % probability.

What is the temperature in Thônex?

Today in Thônex (423 m): 4 to 8 °C. Tomorrow: 6 to 15 °C. Over the next 7 days, highs range from 8 to 15 °C, averaging 12 °C.

Thônex weekend weather

This weekend in Thônex: Saturday light rain, 4 to 8 °C; Sunday rain, 6 to 15 °C.

Will it rain in Thônex this week?

Yes: 6 days with precipitation are expected in Thônex over the next 7 days, 43.1 mm in total. Wettest day: Sunday 15 Nov (14.4 mm).

What is the UV index in Thônex?

Today in Thônex (423 m), the UV index peaks at 2 (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 to go out in Thônex

The best day of the next 7 in Thônex: Saturday 14 Nov, light rain, up to 8 °C.

Climate of Thônex: 1991–2020 normals

In Thônex (423 m), the mean annual temperature is 11.1 °C. The warmest month is July (20.5 °C on average) and the coldest January (2.4 °C). About 959 mm of precipitation falls per year, peaking in October (96 mm) with a minimum in February (59 mm). The sun shines for about 1933 hours a year, mostly in July (270 h). On average there are 68 frost days and 17 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 33.0 °C and the absolute minimum −6.7 °C.

11.1 °CMean annual temperature
959 mmPrecipitation per year
1933 hSunshine hours per year
68Frost days per year
63Summer days (≥ 25 °C)
JFMAMJJASOND

Mean monthly precipitation (mm) — bar height relative to the wettest month.

MonthMean TAbs. maxAbs. minPrecip. (mm)Sunshine (h)Frost daysSummer days
Jan2.4 °C12.3 °C−6.7 °C7665190
Feb3.1 °C14.4 °C−6.1 °C59102170
Mar6.8 °C19.3 °C−3.5 °C6516780
Apr10.4 °C23.4 °C−0.5 °C6719211
May14.5 °C27.7 °C3.6 °C8021504
Jun18.4 °C31.3 °C7.5 °C83246014
Jul20.5 °C33.0 °C9.8 °C80270021
Aug20.0 °C32.5 °C9.1 °C82246018
Sep15.8 °C27.5 °C5.5 °C8819006
Oct11.4 °C22.2 °C1.4 °C9612210
Nov6.3 °C16.9 °C−3.0 °C906870
Dec3.1 °C12.8 °C−5.8 °C9450150
Year11.1 °C33.0 °C−6.7 °C95919336863

Thônex climate month by month

January in Thônex
2.4 °C on average, 76 mm of rainfall and 65 h of sunshine. 19 frost days.
February in Thônex
3.1 °C on average, 59 mm of rainfall and 102 h of sunshine. 17 frost days.
March in Thônex
6.8 °C on average, 65 mm of rainfall and 167 h of sunshine. 8 frost days.
April in Thônex
10.4 °C on average, 67 mm of rainfall and 192 h of sunshine. 1 frost days. 1 summer days (≥ 25 °C).
May in Thônex
14.5 °C on average, 80 mm of rainfall and 215 h of sunshine. 0 frost days. 4 summer days (≥ 25 °C).
June in Thônex
18.4 °C on average, 83 mm of rainfall and 246 h of sunshine. 14 summer days (≥ 25 °C).
July in Thônex
20.5 °C on average, 80 mm of rainfall and 270 h of sunshine. 21 summer days (≥ 25 °C).
August in Thônex
20.0 °C on average, 82 mm of rainfall and 246 h of sunshine. 18 summer days (≥ 25 °C).
September in Thônex
15.8 °C on average, 88 mm of rainfall and 190 h of sunshine. 6 summer days (≥ 25 °C).
October in Thônex
11.4 °C on average, 96 mm of rainfall and 122 h of sunshine. 1 frost days. 0 summer days (≥ 25 °C).
November in Thônex
6.3 °C on average, 90 mm of rainfall and 68 h of sunshine. 7 frost days.
December in Thônex
3.1 °C on average, 94 mm of rainfall and 50 h of sunshine. 15 frost days.

At what altitude is Thônex located?

Thônex sits at around 423 m above sea level in the canton of Geneva. This elevation directly affects temperatures, the rain-snow line and snow cover: on average, the temperature drops by about 0.55 °C per 100 m of altitude.

What is the warmest month in Thônex?

The warmest month in Thônex is July, averaging 20.5 °C; the coldest is January, at 2.4 °C. The annual mean is 11.1 °C (MeteoSwiss 1991–2020 normals, reference station Genève / Cointrin).

How much does it rain in Thônex per year?

Thônex receives about 959 mm of precipitation a year, or 80 mm a month on average. The wettest month is October (96 mm) and the driest February (59 mm), according to the MeteoSwiss 1991–2020 normals.

How many frost days does Thônex have?

Thônex averages 68 frost days a year, most of them in January (19 days). Conversely, 63 summer days exceed 25 °C, 17 of them above 30 °C. Mean values from the MeteoSwiss 1991–2020 normals.

How many hours of sunshine does Thônex get per year?

The sun shines for about 1933 hours a year in Thônex. The sunniest month is July (270 h) and the least sunny December (50 h), according to the MeteoSwiss 1991–2020 normals.

How big is the temperature difference between summer and winter in Thônex?

In Thônex, the monthly mean rises from 2.4 °C in January to 20.5 °C in July: a 18.1 °C gap between the coldest and the warmest month. Absolute extremes over 1991–2020 range from −6.7 °C to 33.0 °C.

When is the best time to visit Thônex?

For warmth and sunshine: July (20.5 °C on average, 270 h of sun). To avoid rain, February is the driest month (59 mm). The coldest month is January (2.4 °C).

Source: MeteoSwiss open data (1991–2020 normals) — stations Genève / Cointrin (8 km, 411 m), Nyon / Changins (23 km, 458 m), La Dôle (27 km, 1670 m), adjusted to the elevation of Thônex (423 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.