Weather in Oregon, United States in September

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Visiting Oregon, United States in September

September is one of the best months to visit Oregon for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

The weather in September is marginally cooler than the previous month and temperatures continue to drop into October. September has average maximum temperatures of 19°C (66°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 55.6% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.0 hours of sunshine per day.

September has total rainfall of 6.1cm (2.4inches) making it mostly dry with only intermittent light showers. There are only 11.4 days with some rainfall so you can still enjoy the beach on the majority of days.

Sea temperatures are a cold 14°C (57°F). September is too cold for swimming in Oregon for any length of time, unless you have a wetsuit. The sea temperature in September is marginally cooler than the previous month and temperatures continue to drop slightly into October.

Also consider visiting Oregon in one of the other best months of June, July, August, for the best beach weather. Also consider one of our other suggestions for September.

Can you sunbathe in Oregon in September?

No, September is not a good time for sunbathing in Oregon.

September has average maximum temperatures of 19°C (66°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 55.6% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.0 hours of sunshine per day. September has total rainfall of 6.1cm (2.4inches) making it mostly dry with only intermittent light showers. There are only 11.4 days with some rainfall so you can still enjoy the beach on the majority of days.

More about September temperature and sunshine.

Can you swim in Oregon in September?

No, September is too cold for swimming in Oregon for any length of time, with the sea water at 14°C (57°F), unless you have a wetsuit.

More about September sea temperatures.

Is September a good time to holiday in Oregon?

Yes, September is a good time for a holiday in Oregon.

September has average maximum temperatures of 19°C (66°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 55.6% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.0 hours of sunshine per day. September has total rainfall of 6.1cm (2.4inches) making it mostly dry with only intermittent light showers. There are only 11.4 days with some rainfall so you can still enjoy the beach on the majority of days. Sea temperatures are a cold 14°C (57°F). September is too cold for swimming in Oregon for any length of time, unless you have a wetsuit.

More about the September temperatures and sunshine.

Is Oregon warm in September?

Yes, Oregon is not that warm but sunbathing may be possible on some clear days in September.

The average maximum temperature in Oregon in September is 19°C (66°F). The average maximum temperature is 19°C (67°) in the previous month and 16°C (61°F) in the next month.

The average temperature in Oregon in September is 14°C (58°F). The average temperature is 15°C (60°F) in the previous month and 12°C (53°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is Oregon in September?

The average day light hours per day in Oregon in September are 12.6. The sunshine percentage is 55.6% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.0 hours of sunshine per day.

More about September sunshine.

Temperature in Oregon in September

The weather in September is marginally cooler than the previous month and temperatures continue to drop into October. The average maximum temperature in Oregon in September is 19°C (66°F). The average maximum temperature is 19°C (67°F) in the previous month and 16°C (61°F) in the next month.

The average temperature in Oregon in September is 14°C (58°F). The average temperature is 15°C (60°F) in the previous month and 12°C (53°F) in the next month.

The average minimum temperature in Oregon in September is 10°C (50°F). The minimum temperature is 12°C (53°F) in the previous month and 8°C (46°F) in the next month.

Sunshine in Oregon in September

The days in September are shorter than the previous month and days continue to get shorter into October. September has far fewer hours of sunshine than the previous month and hours of sunshine continue to drop markedly into October. During September the average day light hours are 12.6 per day in Oregon. The sunshine percentage is 55.6% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 7.0 hours of sunshine per day.

The ultraviolet index in Oregon in September is typically 5.8 during September. An ultraviolet index reading of 3 to 5 indicates there is a moderate risk of harm from unprotected sun exposure. Keep out of the sun during the strongest hours around midday when unprotected skin risks burning in less than 30 minutes. For the sensitive wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating. Tanning for hours is possible with the right application of sun cream. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Oregon in September

The average sea water temperature in Oregon in September is 13.9°C (57.0°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea. The sea temperature in September is marginally cooler than the previous month and temperatures continue to drop slightly into October.

Rainfall in Oregon in September

September weather is wetter than the previous month and rainfall continues to rise quickly into October. September has a few more days of rain than the previous month and rainy days continue to rise quickly into October. The average total rainfall in Oregon in September is 6.1cm (2.4inches) and on average there are 11.4 rainy days in September making it a pretty wet time to visit the beach.

Humidity in Oregon in September

The maximum dew point (an indicator of humidity) in Oregon in September is 13°C (56°F) which is comfortable for everyone. The dew point is 14°C (57°F) in the previous month and 11°C (11°F) in the next month.

The average maximum relative humidity in Oregon in September is typically 97.6%. The maximum relative humidity is 97.8% in the previous month and 97.8% in the next month.

The average relative humidity in Oregon in September is typically 83.3%. The average relative humidity is 84.7% in the previous month and 84.5% in the next month.

Wind Speed in Oregon in September

The average maximum wind speed in Oregon in September is typically 25KM/H (15MPH). The average maximum wind speed is 25KM/H (16MPH) in the previous month and 26KM/H (16MPH) in the next month.

The average wind speed in Oregon in September is typically 9KM/H (5MPH). The average wind speed is 9KM/H (5MPH) in the previous month and 10KM/H (6MPH) in the next month.

The average wind direction in Oregon in September is from the West-Northwest.

Monthly Averages

Suggested Beaches in September

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.