Otters in Wyoming in May

Yes, May is a good month to see otters in Wyoming. It is the 4th busiest month of the year, with 22 of the 191 sightings logged across the year (11.5%), based on verified iNaturalist records.

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By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.

North American River Otter photographed in WyomingNorth American River Otter photographed in WyomingNorth American River Otter photographed in Wyoming
Photos by iNaturalist observers, used under Creative Commons.

Good month for otters in Wyoming

11.5%

of yearly sightings

22

records in May

#4

busiest month of 12

191

verified records a year

April 2.1%, May 11.5%, June 10.5%. Busiest month is September at 19.4%.

Best months: September, August, JulyPeak season right now

191 verified observations of otters in Wyoming, recorded across 12 months of the year on iNaturalist.

When otters are recorded in Wyoming

Peak month

September

37 records (19.4% of the year)

Quietest month

November

1 records

MonthObservationsShare
January126.3%
February84.2%
March52.6%
April42.1%
May2211.5%
June2010.5%
Julypeak2513.1%
Augustpeak3216.8%
Septemberpeak3719.4%
October178.9%
November10.5%
December84.2%

Otters you are most likely to see

SpeciesVerified observations
North American River Otter191

In Wyoming, May carries 11.5% of the year's otters sightings, about 3.2 points above an even month-to-month split. That makes it the 4th busiest of the twelve months, out of 12 months with recorded activity.

Activity is rising from April (2.1%) into May, and it heads toward June (10.5%) after. The busiest month is September (19.4%), so if timing is flexible, that window is the safer bet.

The otters most often recorded in Wyoming are North American River Otter. Those counts are annual totals rather than a May split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in May itself.

Which otters you are most likely to see

  • North American River Otter191 records
Plan your tripBighorn Canyon National Recreation Area

Plan your otter trip in Wyoming

Start with live tours near Bighorn Canyon National Recreation Area, then compare a nearby stay and a broader wildlife backup before you lock in the trip.

Frequently asked questions

Can you see otters in Wyoming in May?+

Yes. May accounts for 22 of the 191 verified otters sightings logged in Wyoming across the year, which is 11.5% of the annual total.

Is May a good time to see otters in Wyoming?+

May is the 4th busiest month. It is workable, though September and August is the stronger window for a reliable sighting.

What month is best for otters in Wyoming?+

September is the single busiest month, with the broader peak running through September, August and July, based on 191 verified observations.

Which otters are you most likely to see in Wyoming?+

The most-recorded species in Wyoming are North American River Otter, based on all-time iNaturalist counts.