AI-generatedGrenchen at a glance
- Best time
- Apr – Sep
- Warmest month
- Jul · 26°
- Sunshine a year
- 1,790 h
- Rain a year
- 1,151 mm
- Climate
- Continental
- Time zone
- UTC+1 / UTC+2
- Elevation
- 454 m
Climate in Grenchen
Grenchen has mild to warm summers and cold winters with occasional snow. July is the warmest month with average highs of 26 °C, while January is the coolest at 4 °C. With around 1,790 hours of sunshine a year, Grenchen is moderately sunny; July is the sunniest month with 7.9 hours a day.
Holiday weather through the year
Best time to visit Grenchen
The best time to visit Grenchen is from April to September. For sightseeing, day trips and hiking, conditions are most comfortable in September. Rain is frequent in March and from October to January; the wettest month is July with 124 mm.
Grenchen through the seasons
How the weather changes over the seasons, with averages for each.
Grenchen in spring
Mar – May
Fair
- 11–19 °C by day
- 5.8 h of sun a day
- 43 rainy days in all
Grenchen in summer
Jun – Aug
Good
- 23–26 °C by day
- 7.5 h of sun a day
- 47 rainy days in all
Grenchen in autumn
Sep – Nov
Fair
- 8–20 °C by day
- 3.9 h of sun a day
- 38 rainy days in all
Grenchen in winter
Dec – Feb
Poor
- 4–6 °C by day
- 2.4 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
15–28 °C and not too much rain
Rainy months
Mar, Oct – Jan
Rainy season or more than 12 rainy days
Snow
Nov – Mar
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Grenchen 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: April – September
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 6°
- Midday, 13:00: about 14°
- Afternoon, 16:00: about 14°
- Evening, 20:00: about 11°
- Night, 23:00: about 9°
07:4718:45
Cold evenings: bring a warm jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:28–08:29 · evening 18:03–19:04
- Blue hour
- Morning 07:16–07:28 · evening 19:04–19:16
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 Grenchen 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 11° at the end. The days get 1.6 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 17° | 11° |
| Night-time low | 8° | 4° |
| Daylight | 11.8 h | 10.2 h |
What is the weather like in Grenchen in October?
In October, Grenchen is cool: daytime highs average 15 °C, and nights cool down to about 6 °C. The sun is scarce, with only about 3.8 hours a day. Rain is frequent, with about 13 rainy days and 89 mm in total. All in all, October is a so-so month for a holiday in Grenchen.
More details for October
- Daylight
- 10 h 58 min07:47 – 18:45
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 11 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 %72 %
- Sunshineweight 20 %13 %
- Few rainy daysweight 30 %39 %
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 Grenchen
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
September has the better holiday weather in Grenchen: score 72 against 51. In September, days are 5 °C warmer than in October. September has one rainy day fewer. The sun shines 2 hours longer a day in September.
| Month | October | September |
|---|---|---|
| Holiday weather score | 51 | 72better |
| Daytime high | 15° | 20° |
| Night-time low | 6° | 10° |
| Sunshine | 3.8 h | 5.8 hbetter |
| Rainy days | 13 | 12better |
| Rainfall | 89 mm | 89 mm |
Based on the climate averages 1996–2025.
Grenchen month by month
The typical weather for every month at a glance.
10January4° · 2.1 h
In January, Grenchen is cold: daytime highs average 4 °C, and nights often drop below freezing (−2 °C). The sun is scarce, with only about 2.1 hours a day. Precipitation falls on about 13 days, totalling 80 mm; on about 4 of them it snows. All in all, January is not an ideal month for a holiday in Grenchen.
Grenchen in January16February6° · 3.3 h
In February, Grenchen is cold: daytime highs average 6 °C, and nights often drop below freezing (−2 °C). The sun is scarce, with only about 3.3 hours a day. Rain is frequent, with about 11 rainy days and 67 mm in total. Snow falls on about 4 days. All in all, February is not an ideal month for a holiday in Grenchen.
Grenchen in February33March11° · 4.9 h
In March, Grenchen is cool: daytime highs average 11 °C, and nights cool down to about 1 °C. Expect around 4.9 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 78 mm in total. Snow falls on about 2 days. All in all, March is not an ideal month for a holiday in Grenchen.
Grenchen in March60April15° · 6.0 h
In April, Grenchen is cool: daytime highs average 15 °C, and nights cool down to about 4 °C. Expect around 6.0 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 85 mm in total. All in all, April is a good month for a holiday in Grenchen.
Grenchen in April64May19° · 6.4 h
In May, Grenchen is mild: daytime highs average 19 °C, and nights cool down to about 8 °C. Expect around 6.4 hours of sunshine a day. It rains often – on about 17 days, adding up to 122 mm. All in all, May is a good month for a holiday in Grenchen.
Grenchen in May69June23° · 7.4 h
In June, Grenchen is warm: daytime highs average 23 °C, and nights cool down to about 12 °C. The sun shines for around 7.4 hours a day. It rains often – on about 16 days, adding up to 115 mm. All in all, June is a good month for a holiday in Grenchen.
Grenchen in June71July26° · 7.9 h
In July, Grenchen is warm: daytime highs average 26 °C, and nights cool down to about 13 °C. The sun shines for around 7.9 hours a day. It rains often – on about 16 days, adding up to 124 mm. All in all, July is a good month for a holiday in Grenchen.
Grenchen in July71August25° · 7.3 h
In August, Grenchen is warm: daytime highs average 25 °C, and nights cool down to about 13 °C. The sun shines for around 7.3 hours a day. It rains often – on about 15 days, adding up to 119 mm. All in all, August is a good month for a holiday in Grenchen.
Grenchen in August72September20° · 5.8 h
In September, Grenchen is mild: daytime highs average 20 °C, and nights cool down to about 10 °C. Expect around 5.8 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 89 mm in total. All in all, September is a good month for a holiday in Grenchen.
Grenchen in September51October15° · 3.8 h
In October, Grenchen is cool: daytime highs average 15 °C, and nights cool down to about 6 °C. The sun is scarce, with only about 3.8 hours a day. Rain is frequent, with about 13 rainy days and 89 mm in total. All in all, October is a so-so month for a holiday in Grenchen.
Grenchen in October10November8° · 2.2 h
In November, Grenchen is cold: daytime highs average 8 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 2.2 hours a day. Rain is frequent, with about 13 rainy days and 90 mm in total. Snow falls on about 2 days. All in all, November is not an ideal month for a holiday in Grenchen.
Grenchen in November9December4° · 1.7 h
In December, Grenchen is cold: daytime highs average 4 °C, and nights often drop below freezing (−1 °C). The sun is scarce, with only about 1.7 hours a day. Precipitation falls on about 14 days, totalling 93 mm; on about 4 of them it snows. All in all, December is not an ideal month for a holiday in Grenchen.
Grenchen in DecemberClimate in detail
Year & climate tableWarmest in July: 26°
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Grenchen
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
ColdOctober: nights around 6°. The room should be heated.
The coolest nights are in February (−2°), the warmest in July (13°). Nights fall below 8 °C on average from October 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 | 10 | 4° | −2° | 2.1 h | 13 | 80 |
| FebruaryFeb | 16 | 6° | −2° | 3.3 h | 11 | 67 |
| MarchMar | 33 | 11° | 1° | 4.9 h | 13 | 78 |
| AprilApr | 60 | 15° | 4° | 6.0 h | 13 | 85 |
| MayMay | 64 | 19° | 8° | 6.4 h | 17 | 122 |
| JuneJun | 69 | 23° | 12° | 7.4 h | 16 | 115 |
| JulyJul | 71 | 26° | 13° | 7.9 h | 16 | 124 |
| AugustAug | 71 | 25° | 13° | 7.3 h | 15 | 119 |
| SeptemberSep | 72 | 20° | 10° | 5.8 h | 12 | 89 |
| OctoberOct | 51 | 15° | 6° | 3.8 h | 13 | 89 |
| NovemberNov | 10 | 8° | 2° | 2.2 h | 13 | 90 |
| DecemberDec | 9 | 4° | −1° | 1.7 h | 14 | 93 |
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
47.19° N, 7.40° E · 454 m · Europe/Zurich
Sunshine1,790 hours a year
Sunshine hours in Grenchen
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 3.8 of 11.0 hours of daylight in Grenchen, 35 % of the daylight hours.
Sunshine hours: measured at the weather station 23 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
Rain1,151 mm a year, most in July
Rain in Grenchen: 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, Grenchen has about 13 rainy days with 89 mm of rain in total.
UV indexUp to 9 in June
UV index in Grenchen
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 60 min
- Light brown skin
- about 85 min
- Olive skin
- about 110 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 & cloudsWindiest in February: 13 km/h
Wind and clouds in Grenchen
How breezy and how cloudy Grenchen 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 Grenchen typically peaks at 11 km/h during the day: Beaufort 2, light breeze or less.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 70 % of the sky over Grenchen: mostly cloudy, with about 3.8 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 & humidity11 days of 30° or more a year
Heat and humidity in Grenchen
How often the day gets hot in Grenchen (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, Grenchen 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
SnowChance of snow up to 40% in January
Snow in Grenchen
Snow is possible in Grenchen, 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 Grenchen.
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 Grenchen
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Grenchen 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.
Grenchen has its best school-holiday weather during the summer holidays (score 71) and its weakest during the Christmas holidays (score 10).
- 52
Easter holidays
Mar – Apr
Fair
- 14 °C by day
- 5.7 h of sun a day
- 13 rainy days a month
Keep in mind: Frequent rain, Snow
- 65
May half-term
May – Jun
Good
- 20 °C by day
- 6.6 h of sun a day
- 16 rainy days a month
- 71
Summer holidays
Jul – Aug
GoodBest holidays
- 25 °C by day
- 7.5 h of sun a day
- 15 rainy days a month
- 51
October half-term
Oct
Fair
- 15 °C by day
- 3.8 h of sun a day
- 13 rainy days a month
Keep in mind: Frequent rain
- 10
Christmas holidays
Dec – Jan
Poor
- 4 °C by day
- 1.9 h of sun a day
- 14 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 25 min
- Distance
- 740 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
Grenchen compared
Put Grenchen side by side with another destination.
Grenchen vs Moutier
In October the holiday weather in Grenchen and Moutier is about equally good (score 51 vs 50). During the day it is about as warm in Moutier as in Grenchen. Moutier gets one hour less sunshine a day.
| in October | Grenchen | Moutier |
|---|---|---|
| Holiday weather score | 51 | 50 |
| Daytime high | 15° | 15° |
| Sunshine | 4 h | 3 h |
| Rainy days | 13 | 13 |
| Best time | Apr – Sep | May – Sep |
Through the year
Best places in the country
Switzerland in October: the best places
In October, Grenchen ranks 12 among the 31 nearest destinations in this country.
- Laufen16°59
- 2Augusta Raurica16°59
- 3Dornach16°57
- 4Liestal15°55
- 5Lyss15°54
- 6Porrentruy15°54
- 7Basel16°54
- 8Riehen16°54
- 12GrenchenThis page15°51
Places nearby4 places within 15 km
Near Grenchen
Other destinations close by.
Places with a similar climatee.g. Ravensburg and Lindau
Places with a climate like Grenchen
Destinations whose weather through the year is closest to Grenchen's – good alternatives.
Frequently asked questions about Grenchen
When is the best time to visit Grenchen?
The best time to visit Grenchen is from April to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Grenchen?
July is the warmest month, with average highs of 26 °C and nights around 13 °C. January is the coolest month at 4 °C.
When does it rain most in Grenchen?
Rain is frequent in March and from October to January; the wettest month is July with 124 mm. The driest month is February with 67 mm.
How many hours of sunshine does Grenchen get?
Grenchen gets around 1,790 hours of sunshine a year. The sunniest month is July with 7.9 hours a day; in December there are 1.7 hours a day.
What time zone is Grenchen in?
Grenchen is on UTC+1 in January and UTC+2 in July.
How long is the flight from London to Grenchen?
A nonstop flight from London to Grenchen takes about 1 h 25 min, for a straight-line distance of about 740 km.
Which school holidays are best for Grenchen?
Grenchen has its best school-holiday weather during the summer holidays (score 71) and its weakest during the Christmas holidays (score 10). Holiday ratings (0–100): Easter holidays 52, May half-term 65, summer holidays 71, October half-term 51, Christmas holidays 10.