San Diego UV index in May
Typical ultraviolet levels for San Diego during May, from the past year of data.
Very High
San Diego
Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
9.6
UV Index
May average UTC
Low
Moderate
High
Very High
Extreme
May UV
9.6382
Risk level
Very High
Yearly peak
10.5463
Peak month
July
San Diego UV index — monthly trend
Average UV index by month over the past year, with May highlighted.
Visiting San Diego in May?
In May, San Diego's typical UV index is about 9.6382 — 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, San Diego sees the strongest UV in Summer, peaking around 10.5463 in July. Plan sun protection accordingly.
