Biel/Bienne weather and climate in 2025
Day
24 °C
Night
13 °C
Sea
0 °C
Precipitation
102 mm
in month
Rainy days
13 days
in month
Daylight
14 hours
average
Sunshine
7 hours
average
Humidity
73 %
Day
24 °C
Night
13 °C
Sea
0 °C
Precipitation
102 mm
in month
Rainy days
13 days
in month
Daylight
14 hours
average
Sunshine
7 hours
average
Humidity
73 %
Overview: Biel/Bienne
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Weather overview for Biel/Bienne
Weather overview
Nestled at the heart of Switzerland, Biel/Bienne experiences a temperate climate with distinct seasons that each bring their own unique weather patterns. The chilly winters give way to moderate springs, while summers are comfortably warm but not sweltering. Autumn finds a gentle coolness settling in. Over the year, the city witnesses temperatures ranging from a fresh 4 °C (39 °F) in January to a mild 25 °C (76 °F) in July. Precipitation is quite consistent throughout the year, with an average of about 12 days rainy days per month, creating a lush green landscape that the region is known for.
January weather
As January brings the coldest temperatures of the year to Biel/Bienne, one can expect frosty mornings and the daytime high averaging around 4 °C (39 °F). Rainfall is not at its peak, yet there are typically 13 days of rainy days, and the humidity tends to hover around 83 %.
February weather
February sees a slight uptick in temperatures, with a daily high of around 5 °C (41 °F). Yet the number of wet days 11 days remains below the yearly average. The wind speed stays constant at 2 m/s, and sun hours begin to increase to 3 hours, hinting at the approach of spring.
March weather
March in Biel/Bienne showcases the transition from winter chill to the more comfortable temperatures of spring, with daytime highs around 10 °C (50 °F). Rainfall is moderate with 12 days and an increase in sun hours to 4 hours signals longer days.
April weather
April's mild climate introduces more consistent warmth with an average high of 14 °C (57 °F). The number of wet days remains steady at 12 days, while the city enjoys an increase to 5 hours of sunshine daily.
May weather
With the arrival of May, Biel/Bienne experiences warmer days averaging 19 °C (66 °F) and longer sunlight hours at 6 hours per day. Despite this, the city sees an increase in wet days to 15 days, hinting at the unpredictability of spring weather.
June weather
June's summer weather sees daytime temperatures reaching an average high of 22 °C (72 °F), while the city also benefits from the most sun hours of the year averaging 7 hours. The number of wet days slightly diminishes to 14 days, making for a more consistent summer pattern.
July weather
The height of summer in July offers Biel/Bienne its warmest temperatures averaging a high of 25 °C (76 °F). Although showers are still frequent with 13 days of rain, sun hours remain high at 8 hours.
August weather
August maintains a similar warmth to July with average highs of 24 °C (75 °F) and abundant sunshine at 7 hours per day. Despite this, rain does not take a break, with an average of 13 days of wet days.
September weather
As autumn approaches, September sees a slight decrease in temperature to an average high of 19 °C (66 °F) but less rainfall with about 11 days. The number of sun hours begins to diminish slightly to 6 hours.
October weather
October brings a chillier breeze to Biel/Bienne with average highs dropping to 14 °C (57 °F), and a comparable number of wet days at 12 days. Sunlight continues to decrease to 4 hours as days get shorter.
November weather
November sees a noticeable dip in temperatures to 8 °C (46 °F) during the day, while the number of wet days increases slightly to 12 days. The sun hours decrease even more drastically to 2 hours as the days shorten and winter begins to take hold.
December weather
December in Biel/Bienne is marked by the arrival of winter's cold with an average high of only 4 °C (40 °F) and an uptick in wet days to 13 days. A decrease in sun hours to 2 hours reflects the shortest days of the year.
FAQs
How should I dress for the weather in Biel/Bienne during January?
In January, dressing in layers is key in Biel/Bienne, as temperatures can be quite cold. Warm outerwear, hats, gloves, and scarves are advisable to combat the chill, particularly when the nighttime temperature dips to around -2 °C (29 °F).
What's the average daytime temperature in Biel/Bienne in February?
In February, the average daytime temperature typically reaches about 5 °C (41 °F), showing a gentle rise from the chill of January, but nights can still be quite cold with an average low of -1 °C (29 °F).
Are temperatures in Biel/Bienne comfortable in March?
Temperature in March can be described as comfortable for the time of the year, as it sees an increase to an average high of 10 °C (50 °F). With the arrival of spring, the weather is more agreeable, albeit still with a slight nip in the air, especially at night with a low of 1 °C (34 °F).
Is April rainy in Biel/Bienne?
April in Biel/Bienne has its fair share of rain, with an average of 12 days of rainy days, and total precipitation reaches around 75 mm (2.95 in) for the month.
What can we expect from weather in Biel/Bienne in May?
May brings a delightful warmth to Biel/Bienne, with daytime temperatures elevating to an average high of 19 °C (66 °F), signaling the approach of summer. The evenings remain cooler, however, as the night temperatures hover around 9 °C (47 °F).
How warm are the days in Biel/Bienne during June?
Days in June warm up nicely in Biel/Bienne with average highs soaring to 22 °C (72 °F), making it one of the more comfortable and pleasant months for those who enjoy summer weather.
What is the typical temperature in Biel/Bienne in July?
Typical July weather in Biel/Bienne is pleasantly warm with an average daytime temperature peaking at 25 °C (76 °F), ideal for enjoying outdoor summer activities.
Is August too hot in Biel/Bienne?
August in Biel/Bienne is not excessively hot; with average highs at a comfortable 24 °C (75 °F), it's warm enough to enjoy the summer without the extreme heat found in other locales.
What kind of temperatures can be expected in Biel/Bienne in September?
September in Biel/Bienne is characterized by a gentle cooldown with average daytime temperatures dipping to 19 °C (66 °F), signaling the onset of autumn's milder weather.
Will I need warm clothes in Biel/Bienne during October?
Warm clothes start to become a necessity in Biel/Bienne during October as temperatures steadily decline to an average high of 14 °C (57 °F). Layering can be beneficial as the nights begin to get colder with an average low of 6 °C (43 °F).
How cold does it get in Biel/Bienne in November?
November brings a chill to Biel/Bienne with daily temperatures hovering around 8 °C (46 °F), indicating the nearing of winter. Intermittently, you might experience daytime highs slightly warmer, but nights can be especially brisk with an average minimum temperature of 2 °C (35 °F).
Is December very cold in Biel/Bienne?
December is indeed quite cold in Biel/Bienne, with average highs struggling to reach 4 °C (40 °F), and the chill is emphasized with icy nights averaging -1 °C (30 °F). Preparing with appropriate winter attire is essential.
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