About Porrentruy
Porrentruy is a Swiss municipality located in the canton of Jura (JU), at 47.421° latitude and 7.069° longitude. The municipality is part of the Jura massif, continental climate, cold winters and moderate summers. Also known as Porrentruy, Porrentruy benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Porrentruy
The climate in Porrentruy is characteristic of the Jura massif, continental climate, cold winters and moderate 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 Porrentruy and neighboring municipalities.
On this page you will find the detailed weather forecast for Porrentruy: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Porrentruy: 1991–2020 normals
In Porrentruy (481 m), the mean annual temperature is 10.0 °C. The warmest month is July (18.8 °C on average) and the coldest January (1.8 °C). About 996 mm of precipitation falls per year, peaking in May (101 mm) with a minimum in February (61 mm). The sun shines for about 1682 hours a year, mostly in July (236 h). On average there are 79 frost days and 7 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 31.8 °C and the absolute minimum −9.5 °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 | 1.8 °C | 13.1 °C | −9.5 °C | 64 | 63 | 19 | 0 |
| Feb | 2.5 °C | 14.4 °C | −8.3 °C | 61 | 85 | 17 | 0 |
| Mar | 5.9 °C | 18.7 °C | −4.7 °C | 65 | 133 | 11 | 0 |
| Apr | 9.4 °C | 22.6 °C | −1.5 °C | 74 | 166 | 4 | 0 |
| May | 13.2 °C | 26.1 °C | 2.5 °C | 101 | 183 | 0 | 2 |
| Jun | 16.8 °C | 29.7 °C | 6.4 °C | 95 | 210 | 0 | 8 |
| Jul | 18.8 °C | 31.8 °C | 8.9 °C | 91 | 236 | 0 | 13 |
| Aug | 18.6 °C | 31.3 °C | 8.4 °C | 100 | 220 | 0 | 12 |
| Sep | 14.5 °C | 26.1 °C | 5.1 °C | 83 | 156 | 0 | 3 |
| Oct | 10.5 °C | 22.6 °C | 0.5 °C | 92 | 111 | 1 | 0 |
| Nov | 5.6 °C | 17.4 °C | −3.9 °C | 84 | 65 | 9 | 0 |
| Dec | 2.8 °C | 13.6 °C | −8.0 °C | 85 | 54 | 17 | 0 |
| Year | 10.0 °C | 31.8 °C | −9.5 °C | 996 | 1682 | 79 | 38 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Fahy (10 km, 596 m), Delémont (22 km, 439 m), Chasseral (32 km, 1594 m), adjusted to the elevation of Porrentruy (481 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Porrentruy:
- Weather Fontenais
- Weather Courtedoux
- Weather Courchavon
- Weather Coeuve
- Weather Alle
- Weather Courgenay
- Weather Basse-Allaine
- Weather Bure
- Weather Haute-Ajoie
- Weather Damphreux-Lugnez
- Weather Vendlincourt
- Weather Cornol
Frequently asked questions about weather in Porrentruy
What is the weather in Porrentruy today?
At the top of the page you will find the current temperature, precipitation and wind in Porrentruy, updated in real time.
What is the 15-day forecast for Porrentruy?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Porrentruy.
Will it rain tomorrow in Porrentruy?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Porrentruy.
What is the air quality in Porrentruy?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Porrentruy.
Are there weather alerts for Porrentruy?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Porrentruy located?
Porrentruy sits at around 481 m above sea level in the canton of Jura. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Porrentruy?
The warmest month in Porrentruy is July, averaging 18.8 °C (1991–2020 normal). The coldest is January at 1.8 °C.
How much does it rain in Porrentruy per year?
Porrentruy receives about 996 mm of precipitation a year. The wettest month is May (101 mm), the driest February (61 mm).
When is the best time to visit Porrentruy?
For warmth and sunshine: July (18.8 °C on average, 236 h of sun). The coldest month is January (1.8 °C). Check the 15-day forecast above for your dates.