AI-generatedPorrentruy at a glance
- Best time
- May – Sep
- Warmest month
- Jul · 25°
- Sunshine a year
- 1,710 h
- Rain a year
- 1,039 mm
- Climate
- Temperate
- Time zone
- UTC+1 / UTC+2
- Elevation
- 425 m
Climate in Porrentruy
Porrentruy has a temperate climate with warm summers and cool winters. July is the warmest month with average highs of 25 °C, while January is the coolest at 5 °C. With around 1,710 hours of sunshine a year, Porrentruy is moderately sunny; July is the sunniest month with 7.5 hours a day.
Holiday weather through the year
Best time to visit Porrentruy
The best time to visit Porrentruy is from May to September. For sightseeing, day trips and hiking, conditions are most comfortable from September to October. Rain is frequent in March and from November to January; the wettest month is December with 105 mm.
Porrentruy through the seasons
How the weather changes over the seasons, with averages for each.
Porrentruy in spring
Mar – May
Fair
- 11–19 °C by day
- 5.4 h of sun a day
- 39 rainy days in all
Porrentruy in summer
Jun – Aug
Good
- 22–25 °C by day
- 7.2 h of sun a day
- 39 rainy days in all
Porrentruy in autumn
Sep – Nov
Fair
- 9–20 °C by day
- 3.8 h of sun a day
- 36 rainy days in all
Porrentruy in winter
Dec – Feb
Poor
- 5–7 °C by day
- 2.3 h of sun a day
- 38 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Sep – Oct
15–28 °C and not too much rain
Rainy months
Mar, Nov – Jan
Rainy season or more than 12 rainy days
Snow
Dec – Feb
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Porrentruy for you.
Your best months: June, August – September
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Fair
Best time to visit: May – September
Good forSightseeing & walks
A typical day in October
- Morning, 08:00: about 8°
- Midday, 13:00: about 14°
- Afternoon, 16:00: about 15°
- Evening, 20:00: about 12°
- Night, 23:00: about 10°
07:4818:46
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:29–08:30 · evening 18:04–19:05
- Blue hour
- Morning 07:18–07:29 · evening 19:05–19:17
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Porrentruy compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 17° at the start of the month to 12° at the end. The days get 1.6 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 17° | 12° |
| Night-time low | 9° | 5° |
| Daylight | 11.8 h | 10.1 h |
What is the weather like in Porrentruy in October?
In October, Porrentruy is cool: daytime highs average 15 °C, and nights cool down to about 8 °C. The sun is scarce, with only about 3.7 hours a day. Rain is frequent, with about 12 rainy days and 91 mm in total. All in all, October is a so-so month for a holiday in Porrentruy.
More details for October
- Daylight
- 10 h 58 min07:48 – 18:46
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 13 km/haverage daily peakAll months
- Cloud cover
- 70 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2offset from UTC
How the score comes together
- Temperatureweight 50 %78 %
- Sunshineweight 20 %12 %
- Few rainy daysweight 30 %43 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Porrentruy
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
August has the better holiday weather in Porrentruy: score 76 against 54. In August, days are 9 °C warmer than in October. The sun shines 3 hours longer a day in August.
| Month | October | August |
|---|---|---|
| Holiday weather score | 54 | 76better |
| Daytime high | 15° | 24° |
| Night-time low | 8° | 15° |
| Sunshine | 3.7 h | 7.1 hbetter |
| Rainy days | 12 | 12 |
| Rainfall | 91 mm | 84 mm |
| Muggy days | 0better | 1 |
Based on the climate averages 1996–2025.
Porrentruy month by month
The typical weather for every month at a glance.
11January5° · 2.1 h
In January, Porrentruy is cold: daytime highs average 5 °C, and nights cool down to about 0 °C. The sun is scarce, with only about 2.1 hours a day. Rain is frequent, with about 13 rainy days and 94 mm in total. Snow falls on about 4 days. All in all, January is not an ideal month for a holiday in Porrentruy.
Porrentruy in January14February7° · 3.1 h
In February, Porrentruy is cold: daytime highs average 7 °C, and nights cool down to about 0 °C. The sun is scarce, with only about 3.1 hours a day. Rain is frequent, with about 12 rainy days and 79 mm in total. Snow falls on about 3 days. All in all, February is not an ideal month for a holiday in Porrentruy.
Porrentruy in February32March11° · 4.4 h
In March, Porrentruy is cool: daytime highs average 11 °C, and nights cool down to about 3 °C. Expect around 4.4 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 80 mm in total. Snow falls on about 2 days. All in all, March is not an ideal month for a holiday in Porrentruy.
Porrentruy in March60April15° · 5.7 h
In April, Porrentruy is cool: daytime highs average 15 °C, and nights cool down to about 6 °C. Expect around 5.7 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 75 mm in total. All in all, April is a good month for a holiday in Porrentruy.
Porrentruy in April67May19° · 6.0 h
In May, Porrentruy is mild: daytime highs average 19 °C, and nights cool down to about 9 °C. Expect around 6.0 hours of sunshine a day. It rains often – on about 15 days, adding up to 98 mm. All in all, May is a good month for a holiday in Porrentruy.
Porrentruy in May73June22° · 7.0 h
In June, Porrentruy is warm: daytime highs average 22 °C, and nights cool down to about 13 °C. The sun shines for around 7.0 hours a day. Rain is frequent, with about 14 rainy days and 81 mm in total. All in all, June is a good month for a holiday in Porrentruy.
Porrentruy in June75July25° · 7.5 h
In July, Porrentruy is warm: daytime highs average 25 °C, and nights cool down to about 15 °C. The sun shines for around 7.5 hours a day. Rain is frequent, with about 13 rainy days and 86 mm in total. All in all, July is a good month for a holiday in Porrentruy.
Porrentruy in July76August24° · 7.1 h
In August, Porrentruy is warm: daytime highs average 24 °C, and nights cool down to about 15 °C. The sun shines for around 7.1 hours a day. Rain is frequent, with about 12 rainy days and 84 mm in total. All in all, August is a good month for a holiday in Porrentruy.
Porrentruy in August74September20° · 5.4 h
In September, Porrentruy is mild: daytime highs average 20 °C, and nights cool down to about 11 °C. Expect around 5.4 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 74 mm in total. All in all, September is a good month for a holiday in Porrentruy.
Porrentruy in September54October15° · 3.7 h
In October, Porrentruy is cool: daytime highs average 15 °C, and nights cool down to about 8 °C. The sun is scarce, with only about 3.7 hours a day. Rain is frequent, with about 12 rainy days and 91 mm in total. All in all, October is a so-so month for a holiday in Porrentruy.
Porrentruy in October18November9° · 2.2 h
In November, Porrentruy is cold: daytime highs average 9 °C, and nights cool down to about 3 °C. The sun is scarce, with only about 2.2 hours a day. Rain is frequent, with about 13 rainy days and 95 mm in total. Snow falls on about 2 days. All in all, November is not an ideal month for a holiday in Porrentruy.
Porrentruy in November9December6° · 1.8 h
In December, Porrentruy is cold: daytime highs average 6 °C, and nights cool down to about 1 °C. The sun is scarce, with only about 1.8 hours a day. Rain is frequent, with about 14 rainy days and 105 mm in total. Snow falls on about 3 days. All in all, December is not an ideal month for a holiday in Porrentruy.
Porrentruy in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Porrentruy
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
CoolOctober: nights around 8°. A duvet at night and a jumper for the evening.
The coolest nights are in January (0°), the warmest in July (15°). Nights are pleasant for sleeping (15 to 20 °C) from July to August. Nights fall below 8 °C on average from November to April, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 11 | 5° | 0° | 2.1 h | 13 | 94 |
| FebruaryFeb | 14 | 7° | 0° | 3.1 h | 12 | 79 |
| MarchMar | 32 | 11° | 3° | 4.4 h | 12 | 80 |
| AprilApr | 60 | 15° | 6° | 5.7 h | 12 | 75 |
| MayMay | 67 | 19° | 9° | 6.0 h | 15 | 98 |
| JuneJun | 73 | 22° | 13° | 7.0 h | 14 | 81 |
| JulyJul | 75 | 25° | 15° | 7.5 h | 13 | 86 |
| AugustAug | 76 | 24° | 15° | 7.1 h | 12 | 84 |
| SeptemberSep | 74 | 20° | 11° | 5.4 h | 11 | 74 |
| OctoberOct | 54 | 15° | 8° | 3.7 h | 12 | 91 |
| NovemberNov | 18 | 9° | 3° | 2.2 h | 13 | 95 |
| DecemberDec | 9 | 6° | 1° | 1.8 h | 14 | 105 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
47.42° N, 7.08° E · 425 m · Europe/Zurich
Sunshine
Sunshine hours in Porrentruy
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.7 of 11.0 hours of daylight in Porrentruy, 34 % of the daylight hours.
Sunshine hours: measured at the weather station 10 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
Rain
Rain in Porrentruy: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Porrentruy has about 12 rainy days with 91 mm of rain in total.
UV index
UV index in Porrentruy
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 3 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 9).
Minutes until sunburn in October
- Very fair skin
- about 50 min
- Fair skin
- about 65 min
- Light brown skin
- about 90 min
- Olive skin
- about 115 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind & clouds
Wind and clouds in Porrentruy
How breezy and how cloudy Porrentruy is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Porrentruy typically peaks at 13 km/h during the day: Beaufort 3, gentle breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 70 % of the sky over Porrentruy: mostly cloudy, with about 3.7 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat & humidity
Heat and humidity in Porrentruy
How often the day gets hot in Porrentruy (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Porrentruy has about 0 hot days, with an average daytime high of 15 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow
Snow in Porrentruy
Snow is possible in Porrentruy, but no month makes it likely: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Porrentruy.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Planning a trip to Porrentruy
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Porrentruy in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Porrentruy has its best school-holiday weather during the summer holidays (score 76) and its weakest during the Christmas holidays (score 10).
- 52
Easter holidays
Mar – Apr
Fair
- 14 °C by day
- 5.3 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain
- 68
May half-term
May – Jun
Good
- 19 °C by day
- 6.2 h of sun a day
- 15 rainy days a month
- 76
Summer holidays
Jul – Aug
GoodBest holidays
- 25 °C by day
- 7.2 h of sun a day
- 13 rainy days a month
- 54
October half-term
Oct
Fair
- 15 °C by day
- 3.7 h of sun a day
- 12 rainy days a month
Good for: Sightseeing & walks
- 10
Christmas holidays
Dec – Jan
Poor
- 6 °C by day
- 2.0 h of sun a day
- 13 rainy days a month
Keep in mind: Frequent rain, Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 1 h 20 min
- Distance
- 710 km
- Time zone
- UTC+2
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Good to know: Switzerland
- Currency
- Swiss Franc (CHF)
- Languages
- German, French, Italian
- Sockets
- Type C, J · 230 V
- Traffic
- Drives on the right
- Dialling code
- +41
- Emergency number
- 112
UK plugs need a travel adapter
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Compare & alternatives
Compare with another place
Porrentruy compared
Put Porrentruy side by side with another destination.
Porrentruy vs Saignelégier
In October Porrentruy has the better holiday weather (score 54 vs 35). During the day Saignelégier is 3 °C cooler than Porrentruy.
| in October | Porrentruy | Saignelégier |
|---|---|---|
| Holiday weather score | 54 | 35 |
| Daytime high | 15° | 12° |
| Sunshine | 4 h | 4 h |
| Rainy days | 12 | 13 |
| Best time | May – Sep | Jun – Sep |
Through the year
Best places in the country
Switzerland in October: the best places
In October, Porrentruy ranks 6 among the 31 nearest destinations in this country.
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Destinations whose weather through the year is closest to Porrentruy's – good alternatives.
Frequently asked questions about Porrentruy
When is the best time to visit Porrentruy?
The best time to visit Porrentruy is from May to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Porrentruy?
July is the warmest month, with average highs of 25 °C and nights around 15 °C. January is the coolest month at 5 °C.
When does it rain most in Porrentruy?
Rain is frequent in March and from November to January; the wettest month is December with 105 mm. The driest month is September with 74 mm.
How many hours of sunshine does Porrentruy get?
Porrentruy gets around 1,710 hours of sunshine a year. The sunniest month is July with 7.5 hours a day; in December there are 1.8 hours a day.
What time zone is Porrentruy in?
Porrentruy is on UTC+1 in January and UTC+2 in July.
How long is the flight from London to Porrentruy?
A nonstop flight from London to Porrentruy takes about 1 h 20 min, for a straight-line distance of about 710 km.
Which school holidays are best for Porrentruy?
Porrentruy has its best school-holiday weather during the summer holidays (score 76) and its weakest during the Christmas holidays (score 10). Holiday ratings (0–100): Easter holidays 52, May half-term 68, summer holidays 76, October half-term 54, Christmas holidays 10.