Tonight in Koper: Aurora is unlikely in Koper right now. Current Kp is 2.0, below the local Kp 9+ threshold. AuroraMe watches Kp, clouds and darkness for this location and sends a free alert when the next viewing window opens.
aurora visibility now
Unlikely
Kp 2.0 (Low) — need Kp 9+ here
Kp now 2.0 need 9+
Clouds 37% Mixed
Sky Dark visibility
Want an alert when aurora can reach Koper? AuroraMe watches Kp, clouds and darkness for Koper and sends a free push when the next viewing window opens.
Forecast
Scan the next hours here. The free app watches the longer window and sends alerts when conditions improve.
Time
Kp
Visibility
14.07, Tomorrow
02:00
4.0
Unlikely
03:00
4.0
Unlikely
04:00
4.0
Unlikely
05:00
4.3
Unlikely
06:00
4.3
Unlikely
07:00
4.3
Unlikely
...
aurora nights per year
Kp ≥ 9 · 11 years of data
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Dec
#1
Sep Loading data...
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📅 All 12 months ranked 🛏️ Min nights for 80% chance 🔔 Push alert 1h before aurora 🌙 72h hour-by-hour forecast
Why this forecast?
Aurora Zone
Higher Aurora Zone = better aurora visibility. Your location's Aurora Zone determines how often auroras appear overhead.
Status Levels:
PerfectAbove 62.0° - Excellent aurora visibility (daily activity)
Good56.0° - 62.0° - Good aurora visibility (regular storms)
Acceptable50.0° - 56.0° - Fair aurora visibility (strong storms only)
LowBelow 50.0° - Poor aurora visibility (extreme storms)
Aurora Zone
Low 40.7°
Kp index
Kp measures global magnetic disturbance. Higher Kp = stronger auroras visible at lower latitudes.
Status Levels:
StormKp 6-9 - Geomagnetic storm, strong auroras
GoodKp 3-6 - Moderate activity, good conditions
LowKp 1-3 - Low activity, weak auroras
Very QuietKp 0-1 - Very quiet, minimal auroras
Kp index
Low 2
Cloud Cover Impact
Clear skies are essential for aurora viewing. Clouds block your view of the northern lights. The percentage shows cloud coverage (0-25% = clear, 85%+ = overcast).
Status Levels:
ClearClear (0-25%) - Perfect for aurora viewing
Partly CloudyPartly Cloudy (26-50%) - May partially block view
CloudyCloudy (51-85%) - Significantly blocks aurora
OvercastOvercast (85%+) - Blocks aurora completely
Cloud Cover Impact
⛅ Partly Cloudy
Moonlight
Bright moonlight can wash out faint auroras. New moon provides the darkest skies for optimal viewing.
Status Levels:
New MoonDarkest skies - Best for faint auroras
CrescentDim moonlight - Good for viewing
QuarterModerate moonlight - May wash out weak auroras
GibbousBright moonlight - Reduces aurora visibility
Full MoonVery bright - Only strong auroras visible
Moonlight
🌒 Crescent 6%
Darkness
Darker skies are essential for aurora viewing. The sun must be below the horizon for auroras to be visible.
Status Levels:
NightDarkest conditions - Optimal for auroras
Astronomical TwilightDark enough - Good aurora viewing
Nautical TwilightGetting darker - Weak auroras may appear
DaylightSun is above horizon - No aurora visible
Darkness
Astronomical Twilight
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Aurora is Rare in Koper — But Not Impossible
Kp 9+ needed to see aurora here
0 possible aurora nights in the next 27 days
Aurora Borealis Viewing in Koper
Adriatic port with minimal aurora potential.
Koper sits at 40.7° magnetic latitude, which means aurora typically becomes visible when the Kp index reaches 9+. Aurora sightings in Koper require stronger geomagnetic storms (Kp 9+), which occur a few times per year. When storms do hit, the best viewing window is 10 PM to 2 AM local time under clear, dark skies.
Cloud cover is the most common reason people miss aurora even during strong storms. AuroraMe combines the Kp index with real-time cloud forecasts, moon phase, and darkness data to give you a single visibility status — so you know whether it's worth going outside tonight.
For the broader storm picture before checking Koper, start with the aurora borealis forecast and the geomagnetic storm tracker. Low-latitude places like Koper usually need a severe geomagnetic storm, clear northern horizon, and full darkness before northern lights become realistic.
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Planning a trip? See the best months for Koper → • Northern lights tonight — all cities →
Learn More About the Northern Lights
Northern Lights in Koper: Quick Guide
Minimum Kp Needed
8.0+
Viewing Frequency
extremely rare
Current Kp Index
2.0
How often can you see northern lights in Koper?
Based on its magnetic latitude of <strong>40.7°</strong>, aurora viewing in Koper is <strong>extremely rare (visible only during exceptional geomagnetic storms)</strong>. We are currently near solar maximum (2024-2025), so expect higher-than-average activity.
Best viewing season: September to March, with peak activity during equinoxes (September and March).
What Kp index do I need to see aurora in Koper?
For Koper, you need a minimum Kp index of <strong>8.0</strong> for aurora to be visible. This threshold is calculated based on the city's magnetic latitude (40.7°).
Higher Kp values produce brighter, more active displays:
- Kp 8.0-9.0: Faint aurora visible in dark skies
- Kp 9.0-10.0: Moderate aurora with dancing patterns
- Kp 10.0+: Strong, colorful displays visible even with some light pollution
Current Kp index: 2.0
Where should I look for aurora in Koper?
Aurora is rarely visible this far south. When it does appear during extreme storms (Kp 7+), look for a faint glow on the northern horizon.
For best results, seek locations with minimal light pollution and unobstructed views of the sky. From Koper, aurora typically remains closer to the horizon, so elevated viewing locations help.
Can I see northern lights tonight in Koper?
Unlikely: Aurora unlikely tonight with Kp 2.0 (below 8.0 threshold for Koper). Enable alerts to catch future opportunities.
Real-time conditions: 36.7% cloud cover, Aurora Score 0/100. Check the live forecast above for the latest updates.
Traveling? Track multiple locations easily
Compare aurora chances across cities and get alerts for all your planned destinations.
For brighter shows consider Fairbanks , Yellowknife