Isfahan, Iran UV Index Today – Burn Times & Sun Safety
Updated: Sunday, May 10, 2026
The UV index in Isfahan, Iran averages 9 (Very High) with peaks reaching 12. At this intensity, unprotected fair skin can burn in under 11 minutes. SPF 50+ sunscreen, protective clothing, and shade are essential during peak hours.
Current UV Conditions in Isfahan, Iran
The ultraviolet radiation in Isfahan is currently at Very High levels. Extra protection needed. Avoid being outside during midday, shirt, sunscreen, and hat are a must.
- Average UV Index: 9 (Very High)
- Peak UV Index: 12
- UV Risk Category: Very High — extra protection required
- Peak UV Hours: 10:00 AM – 4:00 PM local time
- Region: Middle East
Burn Time by Skin Type in Isfahan
Estimated time to first sunburn at UV 9 in Isfahan 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 | 11 min | 33 min | 55 min |
| Type II (Fair) | White skin, burns easily, tans minimally | 17 min | 51 min | ~1h 25m |
| Type III (Medium) | Cream/light brown, sometimes burns, tans uniformly | 22 min | ~1h 6m | ~1h 50m |
| Type IV (Olive) | Moderate brown, rarely burns, tans easily | 33 min | ~1h 39m | 2h 45m |
| Type V (Brown) | Dark brown skin, very rarely burns | 50 min | 2h 30m | 4h 10m |
| Type VI (Dark) | Deeply pigmented dark brown to black | ~1h 7m | 3h 21m | 5h 35m |
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 Isfahan
At very high UV levels in Isfahan, SPF 50+ broad-spectrum sunscreen is essential. Apply two milligrams per square centimetre of skin (approximately one teaspoon per body area) at least 15 minutes before sun exposure. Reapply every 60-90 minutes, and immediately after swimming, towelling off, or heavy perspiration. No sunscreen blocks 100% of UV — combine with physical barriers like UPF-rated clothing, a wide-brimmed hat, and UV-blocking sunglasses for comprehensive protection.
Why UV Is Intense in Isfahan
Isfahan has extreme solar radiation due to its desert climate, clear skies, and low latitude. UV Index values regularly reach 10-12 during summer months. The arid environment means minimal cloud cover protection, and sand reflection adds 15-25% to effective UV exposure.
Key factors affecting UV intensity in Isfahan:
- Latitude: Isfahan'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 Isfahan at UV 9
How current UV levels in Isfahan affect popular outdoor activities and what precautions you should take:
- Beach and swimming: Use waterproof SPF 50+ sunscreen. Reapply every 60-90 minutes. Wear a rash guard or UV-protective swimwear
- Sightseeing and walking: Schedule outdoor tours for early morning (before 10 AM) or late afternoon (after 4 PM). Carry a parasol or umbrella for shade
- Water sports (snorkelling, surfing, kayaking): Maximum UV exposure from direct sun plus water reflection. SPF 50+ waterproof formula mandatory, reapply after every water session
- Hiking and trekking: Wear UPF 50+ long sleeves, wide-brimmed hat, and wrap-around UV sunglasses. Carry extra sunscreen for high-altitude sections
- Children's activities: Avoid direct sun between 10 AM and 4 PM. Use rash guards, hats, and SPF 50+ formulated for sensitive skin
Best Times for Outdoor Activities in Isfahan
- 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 Isfahan
- Apply broad-spectrum SPF 50+ sunscreen 15-30 minutes before sun exposure
- Reapply sunscreen every 60-90 minutes, 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 Isfahan
What is the UV index in Isfahan, Iran today?
The UV index in Isfahan typically ranges from 7 to 12 depending on time of day, season, and cloud cover. Peak UV occurs between 10:00 AM and 4:00 PM local time. During summer months, UV frequently exceeds 10, making sun protection essential.
How long can I stay in the sun in Isfahan without burning?
At UV 9 in Isfahan, fair-skinned individuals (Fitzpatrick Type I) may burn in as little as 11 minutes without protection. Medium skin types (Type III) can typically tolerate 22 minutes. Always apply sunscreen regardless of skin type — UV damage accumulates even without visible sunburn.
What SPF should I use in Isfahan?
SPF 50+ broad-spectrum sunscreen is recommended in Isfahan due to very high UV levels. Reapply every 60-90 minutes during outdoor activities, and immediately after swimming. Choose waterproof formulas for beach and water sports.
When is the sun strongest in Isfahan?
UV radiation peaks in Isfahan between 10:00 AM and 4:00 PM local time, with maximum intensity around solar noon (approximately 12:30-1:30 PM). During peak months, even early morning (8-10 AM) UV can reach moderate levels requiring protection.
Is Isfahan safe for people with fair skin?
Isfahan is safe for fair-skinned visitors with proper sun protection. At UV 9, Type I skin can burn in under 11 minutes without sunscreen. Wear SPF 50+, 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 Isfahan?
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 Isfahan, meaning you can still burn on overcast days. Always apply sunscreen regardless of cloud conditions, especially during peak UV hours.