Best Time to See Otters in North Dakota
May and November is the best time to see otters in North Dakota. Based on 3 verified iNaturalist observations, here is exactly when otters are most active across the year in North Dakota.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
3 verified observations of otters in North Dakota, recorded across 2 months of the year on iNaturalist.
When otters are recorded in North Dakota
Peak month
May
2 records (66.7% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 0 | 0% |
| March | 0 | 0% |
| April | 0 | 0% |
| Maypeak | 2 | 66.7% |
| June | 0 | 0% |
| July | 0 | 0% |
| August | 0 | 0% |
| September | 0 | 0% |
| October | 0 | 0% |
| Novemberpeak | 1 | 33.3% |
| December | 0 | 0% |
Otters you are most likely to see
| Species | Verified observations |
|---|---|
| North American River Otter | 3 |
Weather to expect, source Open-Meteo
Typical weather in North Dakota
Recent typical conditions by month, so you can plan a trip around both when otters are active and what the weather is doing. The best months to look for otters sit around 23 to 64 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 21°F | 6°F | 0.7" |
| Feb | 18°F | 1°F | 0.7" |
| Mar | 34°F | 17°F | 0.7" |
| Apr | 46°F | 28°F | 2.1" |
| Maybest time | 64°F | 43°F | 2.3" |
| Jun | 77°F | 57°F | 2.8" |
| Jul | 80°F | 61°F | 2" |
| Aug | 79°F | 60°F | 2" |
| Sep | 71°F | 52°F | 2.3" |
| Oct | 51°F | 36°F | 2.4" |
| Novbest time | 37°F | 23°F | 1" |
| Dec | 25°F | 11°F | 1.2" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for North Dakota. Weather varies year to year, so treat these as a guide.
Sightings of otters in North Dakota peak in May, when 2 of the year's 3 verified observations are logged — about 66.7% of the annual total. Activity stays high through May and November.
The quietest stretch is January, February and March, when otters are hardest to find — no verified records exist for January. If a reliable sighting matters, plan around the peak window rather than the off-season.
The otters you are most likely to encounter in North Dakota 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 North Dakota
- Knife River Indian Villages National Historic Site — National Historic Site
- Lewis & Clark National Historic Trail — National Historic Trail
- North Country National Scenic Trail — National Scenic Trail
- Theodore Roosevelt National Park — National Park
- Fort Union Trading Post National Historic Site — National Historic Site
Frequently asked questions
What is the best month to see otters in North Dakota?+
May is the single best month, and the broader peak window runs through May and November, based on 3 verified iNaturalist observations.
When are otters hardest to see in North Dakota?+
January is the quietest month for otters in North Dakota, with no verified records on iNaturalist.
Are otters active year-round in North Dakota?+
Otters are recorded in 2 of 12 months in North Dakota, concentrated around May and November.
More wildlife in North Dakota