Aurora Borealis in Watford
United Kingdom · 51.66°, -0.40° · geomagnetic 53.6° · needs Kp 7
Tonight's aurora forecast for Watford
1%
Peak chance of a visible display tonight, from the same model the Revon app runs. Watford 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 Watford
Watford is located at 53.6° geomagnetic latitude. Auroras visible at this latitude typically require a Kp of 7 or higher.
With an average of 2.7 viable nights per year, aurora viewing opportunities are infrequent. Patience and persistence are key for observers.
The best months for aurora viewing in Watford are September, August, and November. These months offer a good balance of darkness and potential aurora activity.
During June and July, the region experiences no full darkness, making aurora sightings impossible.
Watford experiences a Bortle 8 sky, indicating significant light pollution. For darker skies, areas like Braintree (Bortle 5) are approximately 73 km east-north-east, and Bortle 4 skies are about 98 km east.
Local terrain features include Chantry Island (6.3 km NE), Shenley Hill (9.0 km ENE), Verulamium Lake (10.9 km NNE), Heron Island (10.9 km NNE), and Highfield Park (11.9 km NE).
Geographic features near Watford that may offer varied horizons include Chantry Island, located 6.3 km to the north-east.
Further afield, Shenley Hill is a hill situated 9.0 km east-north-east.
Verulamium Lake and Heron Island are both located 10.9 km north-north-east, while Highfield Park is a park 11.9 km north-east.
Between 2016 and 2026, there were 2.7 viable aurora nights per year recorded. The historical record spans from April 2, 2016, to March 30, 2026.
Notable qualifying nights include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), January 19, 2026 (Kp 8.67), November 12, 2025 (Kp 7.33), and November 11, 2025 (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)
Know when it is worth going outside
Revon watches the Watford forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
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Forecasts for places within reach of Watford.