Washington UV index in May
Typical ultraviolet levels for Washington during May, from the past year of data.
Very High
Washington
Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
9.1
UV Index
May average
Low
Moderate
High
Very High
Extreme
May UV
9.1428
Risk level
Very High
Yearly peak
10.4328
Peak month
July
Washington UV index — monthly trend
Average UV index by month over the past year, with May highlighted.
Visiting Washington in May?
In May, Washington's typical UV index is about 9.1428 — 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, Washington sees the strongest UV in Summer, peaking around 10.4328 in July. Plan sun protection accordingly.
