Otters in California in December
Yes, December is a good month to see otters in California. It is the 6th busiest month of the year, with 514 of the 6,042 sightings logged across the year (8.5%), 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 otters in California
8.5%
of yearly sightings
514
records in December
#6
busiest month of 12
6,042
verified records a year
November 9.6%, December 8.5%, January 8.5%. Busiest month is September at 9.9%.
6,042 verified observations of otters in California, recorded across 12 months of the year on iNaturalist.
When otters are recorded in California
Peak month
September
599 records (9.9% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 512 | 8.5% |
| February | 429 | 7.1% |
| March | 441 | 7.3% |
| April | 514 | 8.5% |
| May | 383 | 6.3% |
| June | 462 | 7.6% |
| July | 523 | 8.7% |
| August | 511 | 8.5% |
| Septemberpeak | 599 | 9.9% |
| Octoberpeak | 576 | 9.5% |
| Novemberpeak | 578 | 9.6% |
| December | 514 | 8.5% |
Otters you are most likely to see
| Species | Verified observations |
|---|---|
| North American River Otter | 6,042 |
In California, December carries 8.5% of the year's otters sightings, about 0.2 points above an even month-to-month split. That makes it the 6th busiest of the twelve months, out of 12 months with recorded activity.
Activity is easing off from November (9.6%) into December, and it heads toward January (8.5%) after. The busiest month is September (9.9%), so if timing is flexible, that window is the safer bet.
The otters most often recorded in California are North American River Otter. Those counts are annual totals rather than a December split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in December itself.
Which otters you are most likely to see
- North American River Otter6,042 records
Plan your 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 otter viewing area.
Booking.com
Stay nearbyStay near Alcatraz Island
Compare hotels, cabins and lodges close to the best otter viewing area in California.
Viator
Broader backupBook a 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 otters in California in December?+
Yes. December accounts for 514 of the 6,042 verified otters sightings logged in California across the year, which is 8.5% of the annual total.
Is December a good time to see otters in California?+
December is the 6th busiest month. It is workable, though September and November is the stronger window for a reliable sighting.
What month is best for otters in California?+
September is the single busiest month, with the broader peak running through September, November and October, based on 6,042 verified observations.
Which otters are you most likely to see in California?+
The most-recorded species in California are North American River Otter, based on all-time iNaturalist counts.
See otters in California in other months
More wildlife in California