Sea Otters in California in September
Yes, September is a good month to see sea otters in California. It is the 7th busiest month of the year, with 939 of the 11,747 sightings logged across the year (8%), based on verified iNaturalist records.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
Good month for sea otters in California
8%
of yearly sightings
939
records in September
#7
busiest month of 12
11,747
verified records a year
August 8.6%, September 8%, October 7.5%. Busiest month is June at 9.7%.
11,747 verified observations of sea otters in California, recorded across 12 months of the year on iNaturalist.
When sea otters are recorded in California
Peak month
June
1,136 records (9.7% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 924 | 7.9% |
| February | 851 | 7.2% |
| Marchpeak | 1,114 | 9.5% |
| April | 1,092 | 9.3% |
| May | 1,020 | 8.7% |
| Junepeak | 1,136 | 9.7% |
| Julypeak | 1,094 | 9.3% |
| August | 1,014 | 8.6% |
| September | 939 | 8% |
| October | 876 | 7.5% |
| November | 819 | 7% |
| December | 868 | 7.4% |
Sea Otters you are most likely to see
| Species | Verified observations |
|---|---|
| Sea Otter | 11,747 |
In California, September carries 8% of the year's sea otters sightings, about 0.3 points below an even month-to-month split. That makes it the 7th busiest of the twelve months, out of 12 months with recorded activity.
Activity holds steady between August and September, and it heads toward October (7.5%) after. The busiest month is June (9.7%), so if timing is flexible, that window is the safer bet.
The sea otters most often recorded in California are Sea Otter. Those counts are annual totals rather than a September split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in September itself.
Which sea otters you are most likely to see
- Sea Otter11,747 records
Plan your sea otter trip in California
Start with live tours near Alcatraz Island, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Alcatraz Island
Use the live GetYourGuide widget to compare local departures and activity styles close to the main sea otter viewing area.
Booking.com
Stay nearbyStay near Alcatraz Island
Compare hotels, cabins and lodges close to the best sea otter viewing area in California.
Viator
Broader backupBook a sea otter tour in California
Compare guided wildlife tours, boat trips and nature experiences if you want a second travel network beyond the live widget.
Frequently asked questions
Can you see sea otters in California in September?+
Yes. September accounts for 939 of the 11,747 verified sea otters sightings logged in California across the year, which is 8% of the annual total.
Is September a good time to see sea otters in California?+
September is the 7th busiest month. It is workable, though June and March is the stronger window for a reliable sighting.
What month is best for sea otters in California?+
June is the single busiest month, with the broader peak running through June, March and July, based on 11,747 verified observations.
Which sea otters are you most likely to see in California?+
The most-recorded species in California are Sea Otter, based on all-time iNaturalist counts.
See sea otters in California in other months
More wildlife in California