San Francisco UV index in October
Typical ultraviolet levels for San Francisco during October, from the past year of data.
Moderate
San Francisco
Moderate UV. Protect your skin during midday hours; wearing a hat and applying sunscreen is advisable.
5.5
UV Index
October average UTC
Low
Moderate
High
Very High
Extreme
October UV
5.5208
Risk level
Moderate
Yearly peak
10.8042
Peak month
July
San Francisco UV index — monthly trend
Average UV index by month over the past year, with October highlighted.
Visiting San Francisco in October?
In October, San Francisco's typical UV index is about 5.5208 — a moderate risk level. Moderate UV. Protect your skin during midday hours; wearing a hat and applying sunscreen is advisable.
Across the year, San Francisco sees the strongest UV in Summer, peaking around 10.8042 in July. Plan sun protection accordingly.
