Best Time to See Great Blue Herons in New Hampshire
August, July and June is the best time to see great blue herons in New Hampshire. Based on 1,368 verified iNaturalist observations, here is exactly when great blue herons are most active across the year in New Hampshire.
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 · Judd Nathan CC BY-ND
Great Blue Heron · Jaime McGuigan CC BY
Great Blue Heron · Laura J. Costello CC BY
1,368 verified observations of great blue herons in New Hampshire, recorded across 12 months of the year on iNaturalist.
When great blue herons are recorded in New Hampshire
Peak month
August
285 records (20.8% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 3 | 0.2% |
| February | 1 | 0.1% |
| March | 31 | 2.3% |
| April | 141 | 10.3% |
| May | 174 | 12.7% |
| Junepeak | 211 | 15.4% |
| Julypeak | 250 | 18.3% |
| Augustpeak | 285 | 20.8% |
| September | 153 | 11.2% |
| October | 85 | 6.2% |
| November | 30 | 2.2% |
| December | 4 | 0.3% |
Great Blue Herons you are most likely to see
| Species | Verified observations |
|---|---|
| Great Blue Heron | 1,368 |
Weather to expect, source Open-Meteo
Typical weather in New Hampshire
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 50 to 72 degrees Fahrenheit, so pack for that.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 24°F | 8°F | 4.1" |
| Feb | 25°F | 8°F | 3.6" |
| Mar | 34°F | 18°F | 3.3" |
| Apr | 45°F | 29°F | 5.2" |
| May | 58°F | 40°F | 4.1" |
| Junbest time | 67°F | 50°F | 4.8" |
| Julbest time | 72°F | 57°F | 7.1" |
| Augbest time | 70°F | 56°F | 4.5" |
| Sep | 63°F | 48°F | 4.5" |
| Oct | 53°F | 39°F | 5.6" |
| Nov | 38°F | 24°F | 4.2" |
| Dec | 30°F | 17°F | 6" |
Typical recent conditions (5-year means) from the Open-Meteo archive, averaged for New Hampshire. Weather varies year to year, so treat these as a guide.
Sightings of great blue herons in New Hampshire peak in August, when 285 of the year's 1,368 verified observations are logged — about 20.8% of the annual total. Activity stays high through August, July and June.
The quietest stretch is February, when great blue herons are hardest to find — February sees just 1 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 New Hampshire 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 New Hampshire
- Appalachian National Scenic Trail — National Scenic Trail
- Saint-Gaudens National Historical Park — National Historical Park
- Odiorne Point SP, Rye
- New Hampshire Coast (consider using a more specific location)
- Isles of Shoals (NH)
- Isles of Shoals--Star Island, Rye
Frequently asked questions
What is the best month to see great blue herons in New Hampshire?+
August is the single best month, and the broader peak window runs through August, July and June, based on 1,368 verified iNaturalist observations.
When are great blue herons hardest to see in New Hampshire?+
February is the quietest month for great blue herons in New Hampshire, with only 1 verified records.
Are great blue herons active year-round in New Hampshire?+
Great blue herons are recorded in 12 of 12 months in New Hampshire, so they can be seen year-round, with a clear peak in August.
More wildlife in New Hampshire