Harbor Weather in September

What's the weather like in Harbor (Oregon) in September 2025?

The climate in Harbor during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Harbor and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 20°C (69°F), whilst at night 9°C (49°F) is normal.

Harbor weather averages (imperial / metric)
Daytime temperature 20.3°C 68.5°F
Nightly temperature 9.2°C 48.5°F
Average temperature 14.7°C 58.5°F
Daily sunshine 9.1 hrs
Avg rainfall 47 mm 1.9 ins
Rainy days 5 days
Sea temperature 13.9°C 57.1°F
Humidity 68%
Windspeed 11.5kph 7 mph

On average September is the 4th driest month of the year in Harbor with around 47mm 1.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.1 hours of sunshine per day.

September temperatures in Harbor

Harbor average temperature in September

September rainfall

Harbor average rain in September

September hourly sunshine

Harbor average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Harbor in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Harbor weather stats

Harbor weather statistics
Hottest month: August 20.6°C 69.1°F
Driest month: July 12mm 0.5ins
Sunniest month: July 11.2hrs
Coldest month: January 11.4°C 52.5°F
Wettest month: December 303mm 11.9ins
Map showing location of Harbor (42.05317, -124.26759) Harbor map pin © Google

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