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.

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Home › Jura › Porrentruy

Weather in Porrentruy

Jura, 481 m · continuously updated

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Wind: –
Humidity: –
Rain ahead: –
Sunset: –

Temperature · last 4 and next 28 hours

Porrentruy weather: the next 24 hours

Updated hourly.

Porrentruy weather hour by hour (48 h)

Porrentruy 15-day forecast

Two-week trend.

Porrentruy weekend weather Rain 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 Porrentruy

Neighbouring municipalities, as the crow flies.

Fontenais2 km Courtedoux2 km Courchavon3 km Coeuve4 km Alle4 km Courgenay5 km Basse-Allaine6 km Bure6 km

7-day forecast for Porrentruy

Today (Sunday 27 Sep) in Porrentruy: partly cloudy, 11 to 29 °C, precipitation 0.0 mm (0 %), wind up to 7 km/h. Tomorrow: overcast, 15 to 29 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	partly cloudy	11 °C	29 °C	0.0 mm	7 km/h
Tomorrow	overcast	15 °C	29 °C	0.0 mm	11 km/h
Tue 29 Sep	overcast	12 °C	26 °C	0.0 mm	9 km/h
Wed 30 Sep	overcast	16 °C	24 °C	0.3 mm	7 km/h
Thu 1 Oct	light rain	15 °C	19 °C	7.7 mm	7 km/h
Fri 2 Oct	fog	14 °C	20 °C	0.0 mm	11 km/h
Sat 3 Oct	fog	14 °C	22 °C	0.0 mm	8 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 481 m). The interactive block at the top refreshes hourly and covers 16 days.

No rain expected in Porrentruy today or tomorrow. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Porrentruy

Sunday 27 Sep in Porrentruy, hour by hour: sunny in the morning, sunny in the afternoon, partly cloudy in the evening. Low 11 °C around 05:00, high 29 °C around 16:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	12 °C	7 km/h
01:00	sunny	12 °C	6 km/h
02:00	sunny	12 °C	6 km/h
03:00	sunny	12 °C	6 km/h
04:00	sunny	11 °C	6 km/h
05:00	sunny	11 °C	6 km/h
06:00	sunny	11 °C	6 km/h
07:00	sunny	12 °C	5 km/h
08:00	sunny	12 °C	6 km/h
09:00	sunny	16 °C	3 km/h
10:00	sunny	20 °C	3 km/h
11:00	sunny	24 °C	4 km/h
12:00	sunny	26 °C	4 km/h
13:00	sunny	27 °C	6 km/h
14:00	sunny	28 °C	5 km/h
15:00	sunny	29 °C	8 km/h
16:00	mostly sunny	29 °C	7 km/h
17:00	mostly sunny	29 °C	9 km/h
18:00	partly cloudy	28 °C	8 km/h
19:00	partly cloudy	26 °C	0 km/h
20:00	partly cloudy	22 °C	5 km/h
21:00	partly cloudy	19 °C	6 km/h
22:00	partly cloudy	17 °C	7 km/h
23:00	partly cloudy	16 °C	7 km/h

Hourly forecast issued 27.09.2026 for Porrentruy (481 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Porrentruy weather tomorrow

Tomorrow, Monday 28 Sep, in Porrentruy: overcast, 15 to 29 °C, wind up to 11 km/h. No precipitation expected.

Porrentruy weekend weather

This weekend in Porrentruy: Saturday fog, 14 to 22 °C; Sunday partly cloudy, 11 to 29 °C.

Will it rain in Porrentruy this week?

Yes: 1 day with precipitation is expected in Porrentruy over the next 7 days, 8.0 mm in total. Wettest day: Thursday 1 Oct (7.7 mm).

The best day to go out in Porrentruy

The best day of the next 7 in Porrentruy: Sunday 27 Sep, partly cloudy, up to 29 °C.

The last 7 days in Porrentruy

From 20 Sep to 26 Sep: 15.9 °C on average, 1.4 °C above the September normal (14.5 °C), 0 mm of precipitation (7-day normal: 19 mm). Warmest day: saturday 26 Sep (27 °C); coolest night: friday 25 Sep (6 °C).

Day	Min	Max
Sun 20 Sep	11 °C	25 °C
Mon 21 Sep	12 °C	20 °C
Tue 22 Sep	7 °C	21 °C
Wed 23 Sep	6 °C	24 °C
Thu 24 Sep	10 °C	22 °C
Fri 25 Sep	6 °C	23 °C
Sat 26 Sep	8 °C	27 °C

Open-Meteo analyses of the last 7 days (models and assimilated observations), MeteoSwiss 1991–2020 normals. Updated nightly.

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.

10.0 °CMean annual temperature

996 mmPrecipitation per year

1682 hSunshine hours per year

79Frost days per year

38Summer days (≥ 25 °C)

JFMAMJJASOND

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.