3-day Kp forecast (NOAA SWPC)
5-day night cloud cover (Open-Meteo)
Average night cloud cover (10pm-3am local)
Auroral oval map
Best months
| Month | Probability | Notes |
|---|---|---|
| September | High | Equinox, nights start to lengthen |
| October | Very high | Often clear skies, growing darkness |
| November | Very high | Long nights, moderate cold |
| December | High | Longest nights, sometimes overcast |
| January | Very high | Extreme cold, excellent contrast |
| February | Very high | Atmospheric stability |
| March | High | Equinox, last practical month |
Complete guide: aurora in Norway (Tromso)
Tromso is northern Norway's "aurora capital". At 69.65 N, it sits inside the auroral oval even at Kp 0 or 1, meaning any clear dark night between September and March can deliver visible aurora. It is the most accessible Arctic destination in Norway: international airport, taxis, urban hotels and nightlife in a compact city of 75,000 surrounded by fjords and snowy mountains.
Getting there: direct flights from Oslo, Copenhagen, Helsinki and many European capitals in season. Langnes Airport (TOS) is 4 km from the centre. SAS, Norwegian and Wideroe operate routes. In winter, book early flights as evenings see more snow cancellations.
Best spots: Kvaloya island, Lyngen peninsula, Sommaroy, the Ersfjord area, and the forests south of Tromso along the E8 toward Finland. Guided hunter tours chase clear sky: they often cross into Finland or Sweden when coastal clouds settle in.
Light pollution: downtown Tromso has light, but neighbouring islands are dark within 20-30 minutes. Storsteinen mountain (Fjellheisen cable car) offers panoramic city-plus-aurora views.
Typical lodging: city-centre hotels (Radisson Blu, Clarion The Edge, Scandic Ishavshotel), countryside cabins, lavvu (Sami tents) and guided aurora-hunter camps. Average January temperature: -4 C, with much lower wind chill from the coastal breeze. Tromso is dark from the polar twilight period (27 Nov - 15 Jan): aurora can appear even at 1pm if Kp spikes.