Early autumn · Weather & things to do
Astoria in September
Astoria edges cooler than August, with highs of 65°F (19°C), lows of 53°F (12°C) and about 2.8 in (71 mm) of rain.
At 89/100 for comfort (3rd of 12), it's one of the best months to visit.
- Avg high
- 65°F (19°C)
- Avg low
- 53°F (12°C)
- Rain
- 2.8 in (71 mm)
- Humidity
- 87%
- Cloud cover
- 53%
- Daylight
- ~12 h 18 min
- Comfort score
- 89/100 · Great
What September feels like
Highs near 65°F (19°C) make for comfortable sightseeing weather.
Nights cool to an average low of 53°F (12°C).
Showers are part of the month, adding up to about 2.8 in (71 mm).
Plan around September
September is one of Astoria's best months on the climate data.
- Last dry month before the rain picks up: October brings 6.8 in (172 mm).
- Last of the best-scoring months: by October, the score drops to 63/100.
- Comfort slips from 94/100 in August to 89/100.
- September sits inside the May – Sep window our Oregon Coast Hideaways route recommends.
What to pack for September
- A warm layer for eveningslows near 53°F
- Packable rain jacket or umbrellaabout 2.8 in of rain
- Comfortable walking shoesmost picks involve some walking
What to do in Astoria in September
With conditions on your side, the picks below favor time outside.
Astoria Riverwalk
Waterfront trail along old cannery piers with sea lions and passing cargo ships.
Why now September scores 89/100 for comfort, good conditions for being outside.
Fort Stevens State Park
Civil War-era fort, bike trails and the rusted wreck of the Peter Iredale on the beach.
Why now Highs near 65°F and 2.8 in of monthly rain make this an easy outdoor pick.
Flavel House Museum
1885 Queen Anne mansion of a river bar pilot, furnished in period style.
Buoy Beer Company
Brewpub on a cannery pier with a glass floor panel over sea lions below.
Astoria Column
125-foot hilltop tower with a spiral mural and 164 steps to views of the Columbia River bar.
Why now One to do outside while the weather is on your side.
Nearby in September
- Cannon Beach in September~21 mi · highs 65°F, 2.8 in rain · similar daytime temperatures, about as wet
- Portland in September~72 mi · highs 77°F, 2.2 in rain · 6°C (12°F) warmer by day, about as wet
- Olympic NP in September~112 mi · highs 53°F, 3.4 in rain · 7°C (12°F) cooler by day, wetter
- Bainbridge Island in September~117 mi · highs 69°F, 2.3 in rain · 2°C (4°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~165 m to Astoria's ~7 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Astoria in September: quick answers
Is September a good time to visit Astoria?
Yes. On the climate data it's one of the best months, scoring 89/100. Expect highs of 65°F (19°C) and 2.8 in (71 mm) of rain. September is inside the May – Sep window our Oregon Coast Hideaways route recommends.
How hot is Astoria in September?
Average highs are 65°F (19°C) and average lows 53°F (12°C), making it the 3rd-warmest month by daytime highs.
Does it rain a lot in Astoria in September?
Some: about 2.8 in (71 mm) of rain falls across September on average, the 4th-driest month of the year. The annual total is about 70.2 in (1782 mm).
What should I pack for Astoria in September?
Bring a warm layer for evenings (lows near 53°F), packable rain jacket or umbrella (about 2.8 in of rain) and comfortable walking shoes (most picks involve some walking).
Routes in season in September
- Oregon Coast Hideaways May – Sep
Planning Astoria in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.