Seaside Mushroom Calendar
Seaside sits in the Coast Range and one of the wetter corners of the region, with roughly 76.7 inches of annual rainfall, most of it falling in the cool months from fall into spring. The ground warms and reaches early fruiting potential around January, by which point the average last frost (Apr 2) has usually passed. Like much of the Pacific Northwest, summers around Seaside run dry, and flushes show up only sporadically where localized rain falls; the season picks up again in August with the return of autumn rains. The first frosts around Nov 12 eventually close the main season, though hardy cool-season species hang on.
Best months
September, October, and November
Ground warms
~January
Frost-free
Apr 2 – Nov 12
Annual rain
76.7"
Driest
July
Species tracked
6
What Fruits When Near Seaside
JFMAMJJASONDMorelregKing BoleteMatsutakeregChanterelleHedgehogregOysterLobsterBear's HeadregBlewitThe PrinceregShaggy Mane
Shading shows when each species typically fruits within about 10 miles, not abundance. Based on iNaturalist observation trends. reg = pooled from the surrounding area where local sightings were sparse.
The Shape of the Season
All species combined — local observations within about 10 miles, by month.
Weather Through the Year
Average daily high–low (°F)
Average monthly precipitation (inches)
The Forest Around Seaside
Dominant tree species within about 10 km — the hosts that shape which mushrooms grow here.
- Western Hemlock40.3%
- Sitka Spruce30.7%
- Douglas-fir15%
- Red Alder10.6%
- Lodgepole Pine2.3%
Track the Season as It Happens
This calendar shows typical timing. A free Salish Mushrooms account adds live environmental layers — soil moisture, soil temperature, snow cover, and recent precipitation — on the Forayz map.
Species to Know Near Seaside
Common Questions
When is mushroom season in Seaside?
Near Seaside, most mushroom activity arrives with the fall rains. The strongest months in the local observation record are September, October, and November.
When do morels fruit near Seaside?
Morel reports in the surrounding region peak in May and June. Timing tracks soil temperature, so south-facing slopes and lower elevations start earlier and higher ground runs later.
What mushrooms grow near Seaside?
6 species show up in the observation record within about 10 miles of Seaside, including King Bolete, Chanterelle, Oyster, Lobster, Blewit, Shaggy Mane. The calendar above shows when each one typically fruits.
Want live conditions instead of climatology? The Forayz map layers soil moisture, soil temperature, snow cover, and recent burns over the same area.
Nearby Calendars in Oregon
- Bend Mushroom Calendar
- Brookings Mushroom Calendar
- Cascade Locks Mushroom Calendar
- Corvallis Mushroom Calendar
- Detroit Mushroom Calendar
- Eugene Mushroom Calendar
- Klamath Falls Mushroom Calendar
- La Grande Mushroom Calendar
- Lincoln City Mushroom Calendar
- Medford Mushroom Calendar
- Newport Mushroom Calendar
- Portland Mushroom Calendar