London UV index in September
Typical ultraviolet levels for London during September, from the past year of data.
Moderate
London
Moderate UV. Protect your skin during midday hours; wearing a hat and applying sunscreen is advisable.
4.9
UV Index
September average
Low
Moderate
High
Very High
Extreme
September UV
4.85
Risk level
Moderate
Yearly peak
7.9871
Peak month
July
London UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting London in September?
In September, London's typical UV index is about 4.85 — a moderate risk level. Moderate UV. Protect your skin during midday hours; wearing a hat and applying sunscreen is advisable.
Across the year, London sees the strongest UV in Summer, peaking around 7.9871 in July. Plan sun protection accordingly.
