At solar noon (11:29:16 AM) the sun reaches 41.9° above the horizon in Nagaoka. Without clouds, that corresponds to a maximum UV index of about 4.3 (moderate). Clouds usually lower the real value; snow, sand, water and altitude can raise it.
UV index in Nagaoka, next 14 days
| Date | Sun at noon | Clear-sky max | Forecast max |
|---|---|---|---|
| 41.9° | 4.3 Moderate | — | |
| 41.6° | 4.2 Moderate | — | |
| 41.2° | 4.1 Moderate | — | |
| 40.9° | 4.1 Moderate | — | |
| 40.5° | 4.0 Moderate | — | |
| 40.2° | 3.9 Moderate | — | |
| 39.8° | 3.9 Moderate | — | |
| 39.5° | 3.8 Moderate | — | |
| 39.2° | 3.7 Moderate | — | |
| 38.8° | 3.7 Moderate | — | |
| 38.5° | 3.6 Moderate | — | |
| 38.2° | 3.6 Moderate | — | |
| 37.9° | 3.5 Moderate | — | |
| 37.5° | 3.4 Moderate | — |
Clear-sky values are calculated from the sun's height at solar noon (cloud-free sky, average ozone). Forecast values from Open-Meteo include clouds and load in your browser.
High UV today? Sport sunscreen with SPF 100 stays on through sweat — essential for long outdoor activities.
View on Amazon →About Nagaoka
Located in Niigata Prefecture, Japan, Nagaoka covers an area of 890.9 square kilometers and has existed as a municipality since 1906. The city sits along the Shinano River and reaches the Sea of Japan. As of 2021, the population was 265,868. Infrastructure includes Nagaoka Station, which functions as both a railway station and an over-track railway station. The city is also home to the Nagaoka University of Technology, a national university. Local transit is served by various passenger and above-ground railway stations, such as Echigo-Kawaguchi Station. Nagaoka maintains twin town relationships with Bamberg, Romainmôtier-Envy, Trier, Fort Worth, and Shirataka.
AI-assisted description based on geographic data and editorial notes.