Schwyz, Switzerland UV Index Today – Burn Times & Sun Safety
Updated: Sunday, May 10, 2026
The UV index in Schwyz, Switzerland averages 6 (High) with peaks reaching 9. At moderate-to-high UV levels, sun protection including SPF 30+ sunscreen, hat, and sunglasses is recommended, especially between 10 AM and 4 PM.
Current UV Conditions in Schwyz, Switzerland
The ultraviolet radiation in Schwyz is currently at High levels. Protection required. Reduce sun exposure between 10am-4pm, apply SPF 30+ every 2 hours.
- Average UV Index: 6 (High)
- Peak UV Index: 9
- UV Risk Category: High — protection recommended
- Peak UV Hours: 10:00 AM – 4:00 PM local time
- Region: Europe
Burn Time by Skin Type in Schwyz
Estimated time to first sunburn at UV 6 in Schwyz for each Fitzpatrick skin type, with protection times using SPF 30 and SPF 50 sunscreen. Estimates assume continuous direct sun exposure at solar noon on a clear day.
| Skin Type | Description | Burn Time (No SPF) | With SPF 30 | With SPF 50 |
|---|---|---|---|---|
| Type I (Very Fair) | Pale white skin, always burns, never tans | 17 min | 51 min | ~1h 25m |
| Type II (Fair) | White skin, burns easily, tans minimally | 25 min | ~1h 15m | 2h 5m |
| Type III (Medium) | Cream/light brown, sometimes burns, tans uniformly | 33 min | ~1h 39m | 2h 45m |
| Type IV (Olive) | Moderate brown, rarely burns, tans easily | 50 min | 2h 30m | 4h 10m |
| Type V (Brown) | Dark brown skin, very rarely burns | ~1h 15m | 3h 45m | 6h 15m |
| Type VI (Dark) | Deeply pigmented dark brown to black | ~1h 40m | 5h 0m | 8h 20m |
Source: Estimates derived from the Fitzpatrick classification system and WHO UV exposure guidelines. Individual results vary based on skin condition, medication, altitude, and surface reflection.
SPF and Sunscreen Advice for Schwyz
With high UV levels in Schwyz, SPF 30+ sunscreen provides adequate protection for most activities. Apply generously 15 minutes before going outside and reapply every 2 hours. For water-based activities, choose a waterproof formula and reapply after swimming. SPF 50 is recommended for fair-skinned visitors (Fitzpatrick Type I-II) and anyone spending extended periods outdoors.
Why UV Is Intense in Schwyz
Schwyz has a European continental climate with UV levels peaking during summer months (June-August). UV radiation is intensified by clear skies and coastal reflection from the sea. Winter UV is significantly lower, but snow reflection at altitude can still cause sunburn.
Key factors affecting UV intensity in Schwyz:
- Latitude: Schwyz's geographic position determines the angle of incoming solar radiation, directly impacting UV strength
- Altitude: UV intensity increases approximately 10-12% for every 1,000 metres of elevation gain
- Season: UV peaks during local summer months when the sun reaches its highest point in the sky
- Ozone layer: Regional ozone thickness varies, affecting how much UV-B radiation reaches the surface
- Surface reflection: Water reflects up to 100% of UV, sand 15-25%, concrete 10%, and snow 80%
- Cloud cover: Up to 80% of UV rays penetrate thin cloud cover — overcast days are not UV-safe
Activity Guide for Schwyz at UV 6
How current UV levels in Schwyz affect popular outdoor activities and what precautions you should take:
- Beach and swimming: Apply SPF 30+ waterproof sunscreen before heading out. Reapply every 2 hours
- Sightseeing and walking: Wear a hat and sunglasses. Seek shade during midday breaks
- Running and cycling: Best before 10 AM or after 4 PM. Apply SPF 30 to exposed skin
- Hiking: Carry sunscreen and wear a hat. Take regular shade breaks every 45 minutes
- Children's activities: Apply SPF 30+ and limit direct midday sun exposure
Best Times for Outdoor Activities in Schwyz
- Early Morning (6:00–9:00 AM): Lowest UV levels — ideal for running, cycling, and exercise
- Mid-Morning (9:00–10:00 AM): UV rising — apply sunscreen before heading out
- Midday (10:00 AM–4:00 PM): Peak UV exposure — limit time outdoors, seek shade, and wear full protection
- Late Afternoon (4:00–6:00 PM): Decreasing UV — good for beach time, sightseeing, and outdoor dining
- Evening (after 6:00 PM): Negligible UV — safe for all outdoor activities
Sun Protection Checklist for Schwyz
- Apply broad-spectrum SPF 30+ sunscreen 15-30 minutes before sun exposure
- Reapply sunscreen every 2 hours, or immediately after swimming or sweating
- Seek shade during peak UV hours (10:00 AM – 4:00 PM)
- Wear a wide-brimmed hat (7cm+ brim) and UV-blocking sunglasses (Category 3+)
- Choose tightly woven, dark-coloured clothing or UPF-rated garments for maximum protection
- Be extra cautious near water, sand, and concrete where UV reflection increases effective exposure by 15-100%
- Check the UV forecast hourly — UV levels change significantly throughout the day
Frequently Asked Questions About UV in Schwyz
What is the UV index in Schwyz, Switzerland today?
The UV index in Schwyz typically ranges from 4 to 9 depending on time of day, season, and cloud cover. Peak UV occurs between 10:00 AM and 4:00 PM local time. Use Daily UV Tracker for real-time hourly UV data.
How long can I stay in the sun in Schwyz without burning?
At UV 6 in Schwyz, fair-skinned individuals (Fitzpatrick Type I) may burn in as little as 17 minutes without protection. Medium skin types (Type III) can typically tolerate 33 minutes. Always apply sunscreen regardless of skin type — UV damage accumulates even without visible sunburn.
What SPF should I use in Schwyz?
SPF 30+ is recommended for most activities in Schwyz. Apply 15 minutes before sun exposure and reapply every 2 hours. Use SPF 50 for extended outdoor time or water activities.
When is the sun strongest in Schwyz?
UV radiation peaks in Schwyz between 10:00 AM and 4:00 PM local time, with maximum intensity around solar noon (approximately 12:30-1:30 PM). Schedule intense outdoor activities for early morning or late afternoon when UV is lowest.
Is Schwyz safe for people with fair skin?
Schwyz is safe for fair-skinned visitors with proper sun protection. At UV 6, Type I skin can burn in under 17 minutes without sunscreen. Wear SPF 30+, a wide-brimmed hat, UV-blocking sunglasses, and seek shade during midday hours. Lightweight long-sleeved shirts with UPF ratings provide excellent protection.
Does cloud cover reduce the UV in Schwyz?
Clouds can reduce UV intensity, but thin or scattered clouds block only 20-30% of ultraviolet radiation. Up to 80% of UV rays penetrate light cloud cover in Schwyz, meaning you can still burn on overcast days. Always apply sunscreen regardless of cloud conditions, especially during peak UV hours.