Whitefish, Montana, USA UV Index in August
The average UV index in Whitefish, Montana, USA in August is about 4.7 (Moderate), peaking near 8.5 at midday on clear days. Fair skin (Type II) can burn in roughly 19 minutes without sunscreen. Wear SPF 30+ sunscreen if you are outside for more than an hour, especially near water or sand.
What is the UV index in Whitefish, Montana, USA in August?
Average UV
4.7
Moderate
Midday Peak
8.5
Clear-sky estimate
Fair Skin Burn Time
19 min
Type II, no sunscreen
How long can you stay in the sun in Whitefish, Montana, USA in August?
| Skin type | Time to first burn | With SPF 30 |
|---|---|---|
| Type 1 | 13 min | up to 240 min |
| Type 2 | 19 min | up to 240 min |
| Type 3 | 32 min | up to 240 min |
| Type 4 | 51 min | up to 240 min |
| Type 5 | 77 min | up to 240 min |
| Type 6 | 115 min | up to 240 min |
Estimates based on Whitefish, Montana, USA's latitude and typical August sun angle. Cloud cover, altitude and reflection from water or sand can raise or lower the real UV. Check the live forecast before long days outside.
Whitefish, Montana, USA UV Index by Month
When is the UV index highest and lowest in Whitefish, Montana, USA?
Highest: June (about 5). Lowest: December (about 2.6).
| Month | Average UV | Midday peak | Level | Fair skin burn |
|---|---|---|---|---|
| January | 2.8 | 5 | Low | 32 min |
| February | 3.4 | 6.1 | Moderate | 26 min |
| March | 4 | 7.2 | Moderate | 23 min |
| April | 4.6 | 8.3 | Moderate | 20 min |
| May | 4.9 | 8.8 | Moderate | 18 min |
| June | 5 | 9 | Moderate | 18 min |
| July | 5 | 9 | Moderate | 18 min |
| August | 4.7 | 8.5 | Moderate | 19 min |
| September | 4.3 | 7.7 | Moderate | 21 min |
| October | 3.6 | 6.5 | Moderate | 25 min |
| November | 3 | 5.4 | Moderate | 30 min |
| December | 2.6 | 4.7 | Low | 35 min |
Common questions about UV in Whitefish, Montana, USA in August
Do you need sunscreen in Whitefish, Montana, USA in August?
Yes. A UV index of 4.7 is Moderate, so use SPF 30+ on exposed skin between 10am and 4pm and reapply every two hours.
Can you tan in Whitefish, Montana, USA in August?
Yes, UV of 4.7 is strong enough to tan. Fair skin can burn in about 19 minutes, so build exposure slowly and use sunscreen.
What time of day is UV strongest in Whitefish, Montana, USA?
UV peaks around solar noon, roughly 11am to 2pm local time, when it can reach about 8.5 in August. Mornings and late afternoons are safest.
Is August a good month to visit Whitefish, Montana, USA for the sun?
August averages UV 4.7, compared with a yearly high of 5 in June and a low of 2.6 in December. Darker skin (Type VI) can burn in about 115 minutes at this level.