UV Index in Siena

Real-time UV forecast & tanning weather

Current Conditions

Loading live weather data...
1
Low
UV Index
🌡️
17°C
Temperature
☁️
Overcast
Conditions
☀️
Peak Tanning Window 1PM • UV 7

Hourly UV Forecast

☀️ Excellent tanning conditions • 11AM–6PM • 24°C • 10 km/h 🌬️
0
6AM
0
7AM
1
NOW
3
9AM
4
10AM
5
11AM
7
12PM
7
1PM
6
2PM
3
3PM
6
4PM
5
5PM
3
6PM
2
7PM
1
8PM
0
9PM
Low 0–2 Moderate 3–5 High 6–7 Very High 8–10 Extreme 11+

16-Day UV Forecast

7
Mon 1
Excellent
6
Tue 2
Excellent
7
Wed 3
Excellent
7
Thu 4
Excellent
7
Fri 5
Excellent
7
Sat 6
Excellent
7
Sun 7
Excellent
7
Mon 8
Excellent
7
Tue 9
Excellent
7
Wed 10
Excellent
7
Thu 11
Excellent
7
Fri 12
Excellent
5
Sat 13
Excellent
7
Sun 14
Excellent
7
Mon 15
Excellent
7
Tue 16
Excellent

Location & Climate

Siena boasts an extended tanning season from March through November, with UV levels reaching a potent 9, especially in summer. The rolling hills of Tuscany surrounding Siena are perfect for tanning, but always prioritize sun protection during the peak midday hours when UV is strongest.

Tanning Tips

Siena has a distinct tanning season from March to November. Winter UV is too low for effective tanning.

Weather data by Open-Meteo (CC BY 4.0)

Monthly UV Index in Siena

Average daily maximum UV index by month

Jan
3
Feb
4
Mar
5
Apr
6
May
8
Jun
9
Jul
9
Aug
9
Sep
8
Oct
6
Nov
5
Dec
4
Low Moderate High Very High Extreme

Best Months to Tan in Siena

Based on average UV levels, the best months for tanning in Siena are:

March Good April Good May Great June Excellent July Excellent August Excellent September Great October Good November Good

Rating based on average monthly UV index

Related Guides

Tanning in UV 9-10+ → Aggressive Tanning — What to Know → Safe Tanning Tips → Foods That Help You Tan → How to Get Rid of a Tan →

Tanning Tools & Calculators

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Tanning Time Calculator

Calculate your ideal tanning time based on skin type and UV index

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Sunburn Calculator

Find out how long until you burn based on your skin type and current UV

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Skin Type Quiz

Discover your Fitzpatrick skin type and get personalized tanning advice

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Tanning Routine Creator

Build a personalized tanning plan based on your skin, UV, and experience

Frequently Asked Questions

What is the UV index in Siena right now?
The current UV index in Siena is shown in the live weather section above. UV levels change throughout the day, typically peaking between 11 AM and 2 PM local time.
What is the best month to tan in Siena?
The best months for tanning in Siena are March, April, May, June, July, August, September, October, November, when average UV levels reach 5 or higher.
How long should I tan in Siena?
Tanning time depends on your skin type and the current UV index. For a moderate UV of 7, a person with Skin Type III (medium complexion) can safely tan for about 21 minutes per session. Use our Tanning Calculator for personalized recommendations.
Is it safe to tan in UV index 9?
UV index 9 is classified as Very High. Very High — avoid prolonged sun exposure. Short tanning sessions with SPF 50+ recommended.
When is the peak UV time in Siena?
UV levels in Siena typically peak between 11:00 AM and 2:00 PM local time. The exact peak depends on the season, cloud cover, and altitude.

UV Index in Nearby Cities

9
Florence
Avg. Peak UV
› 8
Orbetello
Avg. Peak UV
› 8
Pisa
Avg. Peak UV
› 8
Livorno
Avg. Peak UV
› 9
Perugia
Avg. Peak UV
› 8
Portoferraio
Avg. Peak UV
›

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