UV Index in Biel/Bienne, Switzerland

Last updated: May 3, 2025

Staying aware of the UV Index is crucial for residents of Biel/Bienne, Switzerland, where sun exposure can pose significant risks. Understanding UV levels helps prevent sunburn and protects skin health, especially during the sunnier months when the index peaks at 8 around midday. With a Cfb climate, Biel/Bienne experiences mild summers that can still lead to surprising UV exposure levels, making it essential to monitor daily UV forecasts. Whether strolling through picturesque Lake Biel or enjoying the vibrant local parks, being informed about the UV Index can enhance your outdoor experience while prioritizing your skin’s well-being.

Hourly UV Index in Biel/Bienne

As the sun rises, the UV Index starts off low at 1 by 7:00 AM, perfect for a leisurely morning stroll. However, as the day progresses, intensity increases dramatically. By 9:00 AM, it climbs to 3, and by 11:00 AM, it reaches 6, signaling the need for sun protection. The peak comes at 1:00 PM where the UV Index hits a high of 8, remaining intense until 2:00 PM. Afterward, it gradually declines to 5 by 4:00 PM, and further drops to 1 by 7:00 PM. Keep an eye on the UV levels to enjoy the sun safely throughout the day!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	1	low	45 min
09:00	3	moderate	30 min
10:00	4	moderate	30 min
11:00	6	high	25 min
12:00	7	high	25 min
13:00	8	very high	15 min
14:00	8	very high	15 min
15:00	7	high	25 min
16:00	5	moderate	30 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Biel/Bienne

Throughout the year, UV exposure fluctuates significantly, with the highest risk months occurring from May to August, when the UV Index reaches levels categorized as very high (UV Index 8-9). During these months, the burn time drastically decreases to just 15 minutes, emphasizing the need for protection. Conversely, the low risk months of January, November, and December offer a safer environment with a UV Index of 2 and a burn time of 45 minutes. As such, visitors and residents should be particularly vigilant during peak summer months by wearing sunscreen, protective clothing, and seeking shade during peak sun hours, while enjoying the milder winter months with less concern for UV exposure.

Monthly Maximum UV Index for Biel/Bienne, Switzerland

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Biel/Bienne. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Biel/Bienne, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare Biel/Bienne UV Index with Other Switzerland Cities

The table above highlights how UV exposure in Biel/Bienne compares to other major locations across Switzerland. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Biel/Bienne's solar exposure compared to other cities in Switzerland. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Basel UVI	2	3	5	6	8	9	9	8	6	4	2	1
Bern UVI	2	3	5	6	8	9	9	8	6	4	2	2
Zurich UVI	2	3	5	6	8	9	9	8	6	4	3	2
Biel/Bienne	2	3	5	6	8	9	9	8	6	4	2	2
Geneve UVI	2	3	6	7	8	10	9	8	7	5	3	2
Lausanne UVI	2	4	6	7	8	10	9	9	7	5	3	2