Chipmunks in Washington in May

Yes, May is a good month to see chipmunks in Washington. It is the 4th busiest month of the year, with 3,322 of the 27,819 sightings logged across the year (11.9%), based on verified iNaturalist records.

T

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

Olympic Marmot photographed in WashingtonEastern Gray Squirrel photographed in WashingtonHoary Marmot photographed in Washington
Photos by iNaturalist observers, used under Creative Commons.

Good month for chipmunks in Washington

11.9%

of yearly sightings

3,322

records in May

#4

busiest month of 12

27,819

verified records a year

April 9.6%, May 11.9%, June 13.4%. Busiest month is August at 15.6%.

Best months: August, July, JunePeak season right now

27,819 verified observations of chipmunks in Washington, recorded across 12 months of the year on iNaturalist.

When chipmunks are recorded in Washington

Peak month

August

4,346 records (15.6% of the year)

Quietest month

December

703 records

MonthObservationsShare
January8413%
February7272.6%
March1,4235.1%
April2,6809.6%
May3,32211.9%
Junepeak3,73413.4%
Julypeak4,30715.5%
Augustpeak4,34615.6%
September2,97810.7%
October1,8716.7%
November8873.2%
December7032.5%

Chipmunks you are most likely to see

SpeciesVerified observations
Eastern Gray Squirrel7,243
Douglas's Squirrel5,739
Hoary Marmot2,844
Cascade Golden-mantled Ground Squirrel2,453
Townsend's Chipmunk1,934
Yellow-pine Chipmunk1,730
Yellow-bellied Marmot1,598
Olympic Marmot862

In Washington, May carries 11.9% of the year's chipmunks sightings, about 3.6 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 (9.6%) into May, and it heads toward June (13.4%) after. The busiest month is August (15.6%), so if timing is flexible, that window is the safer bet.

The chipmunks most often recorded in Washington are Eastern Gray Squirrel, Douglas's Squirrel and Hoary Marmot. 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 chipmunks you are most likely to see

  • Eastern Gray Squirrel7,243 records
  • Douglas's Squirrel5,739 records
  • Hoary Marmot2,844 records
  • Cascade Golden-mantled Ground Squirrel2,453 records
  • Townsend's Chipmunk1,934 records
  • Yellow-pine Chipmunk1,730 records
Plan your tripEbey's Landing National Historical Reserve

Plan your chipmunk trip in Washington

Start with live tours near Ebey's Landing National Historical Reserve, then compare a nearby stay and a broader wildlife backup before you lock in the trip.

Frequently asked questions

Can you see chipmunks in Washington in May?+

Yes. May accounts for 3,322 of the 27,819 verified chipmunks sightings logged in Washington across the year, which is 11.9% of the annual total.

Is May a good time to see chipmunks in Washington?+

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

What month is best for chipmunks in Washington?+

August is the single busiest month, with the broader peak running through August, July and June, based on 27,819 verified observations.

Which chipmunks are you most likely to see in Washington?+

The most-recorded species in Washington are Eastern Gray Squirrel, Douglas's Squirrel and Hoary Marmot, based on all-time iNaturalist counts.