Saku, Nagano
Low2.6
UV Index · Now
Step out.
You can step out without sun protection.
Unprotected
1 hr 15 min
until skin starts to burn.
With SPF 30
37 hr 44 min
Average unprotected skin. Lighter skin burns faster, darker skin slower.
HeatComfortable
Air
14°
Feels like
14°
Humidity
69%
Questions about Saku today
- What is the UV index in Saku right now?
- The UV index in Saku, Nagano is 2.6 — categorised as Low. You can step out without sun protection.
- Is it safe to go outside in Saku today?
- Yes — UV is low (2.6) in Saku right now. You can step out without sun protection.
- How long does it take to get sunburn in Saku?
- Average unprotected skin starts to burn in roughly 1 hr 15 min at the current UV index of 2.6 in Saku. SPF 30 multiplies that window by about 30×. Lighter skin burns faster; darker skin burns more slowly.
- What does the heat feel like in Saku today?
- Air temperature is 14°C with 69% humidity, giving a "feels like" reading of 14°C — comfortable.
- When is the safest time to step outside in Saku?
- 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 Saku, especially through summer.