Riverside UV index in September
Typical ultraviolet levels for Riverside during September, from the past year of data.
Very High
Riverside
Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
8.7
UV Index
September average
Low
Moderate
High
Very High
Extreme
September UV
8.6788
Risk level
Very High
Yearly peak
10.8975
Peak month
July
Riverside UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Riverside in September?
In September, Riverside's typical UV index is about 8.6788 — a very high risk level. Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
Across the year, Riverside sees the strongest UV in Summer, peaking around 10.8975 in July. Plan sun protection accordingly.
