Aurora Borealis in Rhondda
United Kingdom · 51.66°, -3.45° · geomagnetic 54.1° · needs Kp 7
Tonight's aurora forecast for Rhondda
2%
Peak chance of a visible display tonight, from the same model the Revon app runs. Rhondda needs Kp 7 to see anything at all, and tonight the forecast peaks at Kp 4.9. Short of the threshold, which is what most nights look like here.
Get the full 30-night forecast in Revon
Updated 2026-09-08 10:35 UTC
Local aurora guide for Rhondda
Auroras are typically visible at Rhondda when the geomagnetic activity reaches Kp 7.
At a geomagnetic latitude of 54.1°, auroras may be visible during periods of heightened activity.
On average, there are about 2.7 nights per year with conditions favorable for aurora viewing.
The best months for aurora viewing in Rhondda are September, August, and November.
During June and July, there is no full darkness, which can impact aurora visibility.
The area around Rhondda experiences a Bortle scale rating of 5, indicating moderate light pollution.
Areas with darker skies, rated Bortle 4, can be found approximately 23 km west-north-west near Neath Port Talbot.
Several hills and ridges offer elevated viewpoints, including Pen Craig Abercwmboi to the east-north-east and Cefnrhos-gwawr to the north-north-west.
Pen Craig Abercwmboi, a hill located 3.9 km east-north-east of Rhondda, offers a potential vantage point.
Further north-north-west, Cefnrhos-gwawr is another hill approximately 5.5 km away.
Mynydd Merthyr, a ridge 7.7 km north-east, and Craig y Llyn, a cliff 11.5 km north-west, are also notable geographic features.
Between 2016 and 2026, there were approximately 2.7 nights per year suitable for aurora viewing.
Aurorasaurus has recorded 53 verified sightings within a 300 km radius between 2015 and 2016.
Notable qualifying nights with high Kp values include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), and January 19, 2026 (Kp 8.67).
Sources: Revon analysis of NOAA planetary Kp · Solar declination and hour-angle calculation · Falchi 2016 World Atlas of artificial night sky brightness · GeoNames (CC BY 4.0) · Aurorasaurus verified positive reports
Know when it is worth going outside
Revon watches the Rhondda forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
Nearby towns
Forecasts for places within reach of Rhondda.