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Rule Northern Lights

Teijo - Northern Lights - Southern Finland

Matildedal, Southwest Finland, Finland

Northern Lights photography conditions - combines aurora activity levels with clear skies and proper darkness for optimal viewing.

Currently

Real-time conditions
Kp IndexKp 4 (Unsettled)
Sun Elevation21.9° (Daylight)
Cloud Cover100%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki
aurora weather icon
Next opportunity
Excellent Chance of Aurora
Teijo
Sat, Mar 21 · 02:00–05:00 · 3h window
Low confidence
33%
🌌Aurora Quality83%
Kp Index: Kp 6 (Moderate Storm)
Sun Elevation: -27.4° (Astronomical night)
Cloud Cover: 5%
aurora weather icon
Excellent Chance of Aurora at Dawn
Teijo
Sat, Mar 21 · 05:00–06:00
🌌Aurora Quality:81.5%
Medium
aurora weather icon
Excellent Chance of Aurora
Teijo
Sat, Mar 21 · 20:00–05:00
🌌Aurora Quality:63.6-83%
Low
aurora weather icon
Good Chance of Aurora at Sunrise
Teijo
Sun, Mar 22 · 05:00–06:00
🌌Aurora Quality:61.2%
Low
aurora weather icon
Good Chance of Aurora
Teijo
Sun, Mar 22 · 20:00–02:00
🌌Aurora Quality:57.6-63.6%
Low

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks when Southern Finland's rare aurora opportunities align with clear skies and darkness. At 60°N, Helsinki sits at the same latitude as Shetland—aurora displays are visible during strong geomagnetic storms, typically requiring Kp 5 or higher.

What makes Southern Finland special for aurora photography:

  • Helsinki harbor foregrounds - Combine aurora with Suomenlinna fortress, icebreakers, and maritime architecture
  • Lake reflections - The region's 188,000 lakes create mirror shots impossible in landlocked areas
  • Dark sky accessibility - Nuuksio National Park sits just 30km from Helsinki with minimal light pollution
  • Baltic coastline - Porvoo and coastal viewpoints offer unobstructed northern horizons

Peak aurora season runs from September through March. Unlike Finnish Lapland where aurora is frequent, Southern Finland sees displays only during major geomagnetic storms—but when conditions align, the combination of urban foregrounds and lake reflections creates unique compositions unavailable further north. Seek locations outside Helsinki's light dome, particularly Nuuksio's lakes or coastal vantage points east of the city. The forecast helps identify those rare clear nights when strong geomagnetic activity reaches this latitude.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Helsinki
Aurora Quality
≥ 50.0%
Solar Elevation
≤ -8.0°
Aurora Activity
≥ 50.0%
Total Cloud Coverage
≤ 30.0%
Visibility
≥ 8000.0m
Sat, Mar 14
15:000%22°82%100%20782m
16:000%16°82%95%20834m
17:000%9.8°14%100%21036m
18:000%2.8°0%100%24134m
19:000%-4.7°0%100%24135m
20:000%-12°0%100%24134m
21:000%-19°0%93%24134m
22:000%-25°16%100%24135m
23:000%-29°16%100%24135m
Sun, Mar 15
24:000%-32°14%100%24135m
01:000%-32°18%100%23981m
02:000%-30°31%100%18244m
03:000%-26°0%100%24134m
04:000%-20°0%100%24135m
05:000%-14°0%100%24134m
06:000%-6.4°0%100%24135m
07:000%1.3°0%100%24135m
08:000%8.3°0%100%24134m
09:000%15°0%100%24135m
10:000%21°0%100%24135m
11:000%25°0%100%24135m
12:000%27°0%96%24135m
13:000%28°0%100%21937m
14:000%26°0%100%21094m
15:000%22°0%100%21336m
16:000%17°0%100%24135m
17:000%10°18%100%11644m
18:000%3.1°18%100%13388m
19:000%-4.4°18%100%129m
20:000%-12°0%100%26m
21:000%-19°0%100%23m
22:000%-24°0%100%32m
23:000%-29°0%100%35m
Mon, Mar 16
24:000%-31°0%100%36m
01:000%-31°0%100%105m
02:000%-29°24%82%543m
03:000%-25°24%80%434m
04:000%-20°24%83%377m
05:000%-13°24%86%834m
06:000%-6.1°24%85%1796m
07:000%1.7°24%86%1016m
08:000%8.7°14%88%4012m
09:000%15°14%87%24134m
10:000%21°14%76%20854m
11:000%25°0%56%8339m
12:000%28°0%68%1323m
13:000%28°0%95%8614m
14:000%26°0%100%20817m
15:000%22°0%100%20876m
16:000%17°0%100%21043m
17:000%10°0%100%21694m
18:000%3.4°0%100%24135m
19:000%-4.1°0%100%19425m
20:000%-11°14%100%63m
21:000%-18°14%100%25m
22:000%-24°14%100%27m
23:000%-28°14%100%38m
Tue, Mar 17
24:000%-31°14%100%52m
01:000%-31°14%100%72m
02:000%-29°0%100%147m
03:000%-25°0%100%1968m
04:000%-20°0%100%24135m
05:000%-13°14%100%24134m
06:000%-5.7°14%100%11234m
07:000%14%100%40m
08:000%9.1°0%100%23m
09:000%16°0%100%36m
10:000%21°0%100%1563m
11:000%26°0%100%24134m
12:000%28°0%77%24134m
13:000%28°0%44%24134m
14:000%26°0%12%24135m
15:000%23°0%3.6%24135m
16:000%17°0%5%24134m
17:000%11°0%4.6%24134m
18:000%3.7°0%5%24135m
19:000%-3.8°0%5%24135m
20:000%-11°0%5%24134m
21:000%-18°0%37%24134m
22:000%-24°0%68%24135m
23:000%-28°0%100%24135m
Wed, Mar 18
24:000%-30°0%100%24135m
01:000%-31°0%100%24135m
02:000%-29°14%100%24135m
03:000%-25°14%100%24135m
04:000%-19°14%100%24135m
05:000%-13°14%100%24135m
06:000%-5.3°14%100%24135m
07:000%2.4°14%100%24135m
08:000%9.5°14%100%24135m
09:000%16°14%100%24135m
10:000%22°14%100%24135m
11:000%26°14%100%24135m
12:000%29°14%75%24135m
13:000%29°14%50%24135m
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

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