Matsumoto, Nagano
Moderate3.9
UV Index · Now
Hat & SPF.
A hat and SPF 30 are enough for most people.
Unprotected
52 min
until skin starts to burn.
With SPF 30
25 hr 58 min
Average unprotected skin. Lighter skin burns faster, darker skin slower.
HeatComfortable
Air
15°
Feels like
15°
Humidity
49%
Questions about Matsumoto today
- What is the UV index in Matsumoto right now?
- The UV index in Matsumoto, Nagano is 3.9 — categorised as Moderate. A hat and SPF 30 are enough for most people.
- Is it safe to go outside in Matsumoto today?
- Yes — UV is moderate (3.9) in Matsumoto right now. A hat and SPF 30 are enough for most people.
- How long does it take to get sunburn in Matsumoto?
- Average unprotected skin starts to burn in roughly 52 min at the current UV index of 3.9 in Matsumoto. SPF 30 multiplies that window by about 30×. Lighter skin burns faster; darker skin burns more slowly.
- What does the heat feel like in Matsumoto today?
- Air temperature is 15°C with 49% humidity, giving a "feels like" reading of 15°C — comfortable.
- When is the safest time to step outside in Matsumoto?
- UV is highest between 11 am and 4 pm. Early mornings (before 9 am) and late afternoons (after 5 pm) are the safest windows for unprotected skin in Matsumoto, especially through summer.