Best Time to See Otters in Colorado
April, March and November is the best time to see otters in Colorado. Based on 135 verified iNaturalist observations, here is exactly when otters are most active across the year in Colorado.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
135 verified observations of otters in Colorado, recorded across 12 months of the year on iNaturalist.
When otters are recorded in Colorado
Peak month
April
29 records (21.5% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 7 | 5.2% |
| February | 8 | 5.9% |
| Marchpeak | 16 | 11.9% |
| Aprilpeak | 29 | 21.5% |
| May | 7 | 5.2% |
| June | 9 | 6.7% |
| July | 5 | 3.7% |
| August | 12 | 8.9% |
| September | 12 | 8.9% |
| October | 10 | 7.4% |
| Novemberpeak | 13 | 9.6% |
| December | 7 | 5.2% |
Otters you are most likely to see
| Species | Verified observations |
|---|---|
| North American River Otter | 135 |
Sightings of otters in Colorado peak in April, when 29 of the year's 135 verified observations are logged — about 21.5% of the annual total. Activity stays high through April, March and November.
The quietest stretch is July, January and May, when otters are hardest to find — July sees just 5 records. If a reliable sighting matters, plan around the peak window rather than the off-season.
The otters you are most likely to encounter in Colorado are North American River Otter — the most-recorded species in the state. Each keeps its own seasonal rhythm, but the month-by-month pattern above reflects every reported sighting together.
Where to go
Best places to see otters in Colorado
- Bent's Old Fort National Historic Site — National Historic Site
- Black Canyon Of The Gunnison National Park — National Park
- Colorado National Monument — National Monument
- Curecanti National Recreation Area — National Recreation Area
- Dinosaur National Monument — National Monument
- Great Sand Dunes National Park & Preserve — National Park & Preserve
Plan your otter trip in Colorado
Start with live tours near Bent's Old Fort National Historic Site, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Bent's Old Fort National Historic Site
Use the live GetYourGuide widget to compare local departures and activity styles close to the main otter viewing area.
Booking.com
Stay nearbyStay near Bent's Old Fort National Historic Site
Compare hotels, cabins and lodges close to the best otter viewing area in Colorado.
Viator
Broader backupBook a otter tour in Colorado
Compare guided wildlife tours, boat trips and nature experiences if you want a second travel network beyond the live widget.
Frequently asked questions
What is the best month to see otters in Colorado?+
April is the single best month, and the broader peak window runs through April, March and November, based on 135 verified iNaturalist observations.
When are otters hardest to see in Colorado?+
July is the quietest month for otters in Colorado, with only 5 verified records.
Are otters active year-round in Colorado?+
Otters are recorded in 12 of 12 months in Colorado, so they can be seen year-round, with a clear peak in April.
More wildlife in Colorado