Best Time to See Great Blue Herons in Wisconsin
July, June and May is the best time to see great blue herons in Wisconsin. Based on 3,178 verified iNaturalist observations, here is exactly when great blue herons are most active across the year in Wisconsin.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 20, 2026.
Great Blue Heron · Eric Schmidt CC BY
Great Blue Heron · Eric Schmidt CC BY
Great Blue Heron · velodrome CC BY
3,178 verified observations of great blue herons in Wisconsin, recorded across 12 months of the year on iNaturalist.
When great blue herons are recorded in Wisconsin
Peak month
July
531 records (16.7% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 16 | 0.5% |
| February | 7 | 0.2% |
| March | 111 | 3.5% |
| April | 332 | 10.4% |
| Maypeak | 515 | 16.2% |
| Junepeak | 525 | 16.5% |
| Julypeak | 531 | 16.7% |
| August | 477 | 15% |
| September | 387 | 12.2% |
| October | 206 | 6.5% |
| November | 61 | 1.9% |
| December | 10 | 0.3% |
Great Blue Herons you are most likely to see
| Species | Verified observations |
|---|---|
| Great Blue Heron | 3,178 |
Weather to expect, source Open-Meteo
Typical weather in Wisconsin
Recent typical conditions by month, so you can plan a trip around both when great blue herons are active and what the weather is doing. The best months to look for great blue herons sit around 45 to 80 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 25°F | 10°F | 1.4" |
| Feb | 25°F | 7°F | 2" |
| Mar | 40°F | 21°F | 2.7" |
| Apr | 52°F | 32°F | 3.9" |
| Maybest time | 65°F | 45°F | 3.4" |
| Junbest time | 77°F | 57°F | 3.8" |
| Julbest time | 80°F | 61°F | 3.5" |
| Aug | 77°F | 60°F | 3.5" |
| Sep | 70°F | 53°F | 3" |
| Oct | 55°F | 40°F | 3.3" |
| Nov | 41°F | 27°F | 2.4" |
| Dec | 32°F | 17°F | 1.9" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for Wisconsin. Weather varies year to year, so treat these as a guide.
Sightings of great blue herons in Wisconsin peak in July, when 531 of the year's 3,178 verified observations are logged — about 16.7% of the annual total. Activity stays high through July, June and May.
The quietest stretch is February and December, when great blue herons are hardest to find — February sees just 7 records. If a reliable sighting matters, plan around the peak window rather than the off-season.
The great blue herons you are most likely to encounter in Wisconsin are Great Blue Heron — 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 great blue herons in Wisconsin
- Apostle Islands National Lakeshore — National Lakeshore
- Ice Age National Scenic Trail — National Scenic Trail
- North Country National Scenic Trail — National Scenic Trail
- Saint Croix National Scenic Riverway — National Scenic Riverway
- Horicon NWR (general) (please use more precise locations)
- Manitowoc Lakefront
Frequently asked questions
What is the best month to see great blue herons in Wisconsin?+
July is the single best month, and the broader peak window runs through July, June and May, based on 3,178 verified iNaturalist observations.
When are great blue herons hardest to see in Wisconsin?+
February is the quietest month for great blue herons in Wisconsin, with only 7 verified records.
Are great blue herons active year-round in Wisconsin?+
Great blue herons are recorded in 12 of 12 months in Wisconsin, so they can be seen year-round, with a clear peak in July.