September Weather in Port Angeles East, United States

Last updated: February 24, 2025

In September, Port Angeles East experiences a delightful transition from summer to autumn. With a maximum temperature reaching 26°C (79°F) and an average of 12°C (55°F), the weather remains pleasantly warm. However, cool evenings can drop to a minimum of 3°C (38°F), making layers a smart choice for comfort. This month brings 113 mm (4.5 in) of rain over approximately 13 days, contributing to the area's lush greenery. The humidity sits at a moderate 74%, adding a refreshing maritime feel to the air. As nature shifts towards fall, September in Port Angeles East showcases both vibrant beauty and a hint of crispness in the atmosphere.

September Temperature in Port Angeles East

September in Port Angeles East brings a delightful transition as summer begins to wane. The temperatures feature a mild range, with minimums around 3°C (38°F) and averages climbing to 12°C (55°F), peaking at a refreshing 26°C (79°F). This month marks a shift from the warmer summer days, as the max temperatures dip slightly from August’s highs, yet still offer pleasant conditions for outdoor activities. As fall approaches, the crispness in the air becomes more noticeable, blending the warmth of late summer with the cool embrace of early autumn. This gradual cooling hints at the changing seasons, making September a beautiful time to enjoy the vibrant landscapes of Port Angeles East.

September Weather in Port Angeles East: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Port Angeles East, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec363337424954586054454035
Data source: Temperature data for Port Angeles East generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Port Angeles East

In September, Port Angeles East experiences a notable increase in precipitation, with 113 mm (4.5 in) of rain over 13 days—a significant rise compared to the dry summer months of July and August, which recorded only 39 mm and 37 mm, respectively. This uptick marks the transition into the wetter autumn season, where rainfall begins to intensify ahead of the heavier deluge seen in October and November. Interestingly, while September's rainfall is modest compared to the year's peak months, it sets the stage for the looming wet season that characterizes the region's climate, urging residents and visitors alike to prepare for the lush, vibrant landscapes that follow.

September Precipitation Trends in Port Angeles East

The chart displays monthly precipitation patterns in Port Angeles East, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec202146126118911063937114137211203
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Port Angeles East

In September, Port Angeles East experiences a noticeable drop in humidity, with levels resting at 74%, a subtle decrease from the warmer summer months. This trend marks a decline from August's 73%, suggesting a shift towards drier conditions as the region moves into autumn. Overall, the monthly humidity gradually decreases from the peak of 87% in December to the more moderate levels found in late summer and early fall, illustrating the transition from the damp chill of winter to the more temperate conditions of the seasons ahead. As residents navigate through September, this slight easing of humidity offers a refreshing contrast to the heavier, moist air often felt earlier in the year.

September Average Humidity in Port Angeles East

This chart illustrates the average monthly humidity levels in Port Angeles East, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%85%83%84%84%82%73%74%83%86%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Port Angeles East

As summer transitions into fall, the September UV Index in Port Angeles East sees a slight decrease to 7, categorizing the exposure as high. This drop from the intense very high levels experienced in the heart of summer reflects a seasonal shift, yet caution is still warranted as the recommended burn time is approximately 25 minutes. The data reveals a pattern where UV levels peak during the warmer months, with May and June standing out at 8 and 9, respectively. However, as the days shorten and temperatures cool, the UV Index trends lower, reminding us to remain vigilant about skin protection even in early autumn. For more details on UV exposure throughout the year, visit Port Angeles East UV Index.

Maximum UV Index Levels in Port Angeles East for September

The chart shows the monthly maximum UV Index (UVI) for Port Angeles East in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235689987532
Data source: Port Angeles East September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Port Angeles East

As summer transitions into autumn, September in Port Angeles East boasts a commendable 262 hours of sunshine, marking a significant drop from the sun-drenched days of July and August, which enjoy their peak at 382 and 344 hours respectively. This month's sunshine reflects a gradual tapering off from the vibrant May and June, where residents basked under 329 and 343 hours of sunlight. While the daylight diminishes as September unfolds, it still offers a bright finale, setting the stage for the cooler months ahead. As the sun sets more frequently, Port Angeles East prepares for the cozy embrace of fall, yet it does so with a splendid memory of lingering late summer warmth.

Monthly Sunshine Duration in Port Angeles East: September Highlighted

The September sunshine duration represents the total number of hours Port Angeles East experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec83h144h216h241h329h343h382h344h262h199h127h98h
Data source: Port Angeles East September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Port Angeles East During September

In September, the likelihood of sunny weather in Port Angeles East reflects a transitional phase as summer wanes, with a 37% chance of sunshine. This marks a notable decrease from the vibrant summer months, particularly July and August, which enjoy peak sunshine rates of 69% and 56% respectively. As fall approaches, September's sunny days become less frequent, reminiscent of the 52% sunny days seen in April and hinting at the cloudier months ahead, with October and November seeing chances drop to 24% and 16%. Thus, while September still offers a fair share of sunshine, it paves the way for a shift towards the wetter, gloomier days of autumn.

Percentage of Sunny Days in September in Port Angeles East

The chart illustrates the percentage of sunny days in Port Angeles East throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Port Angeles East experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%24%33%51%40%49%69%56%37%24%16%15%
Data source: Port Angeles East September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Port Angeles East in September

In September, Port Angeles East enjoys about 12 hours of daylight, marking a gentle decline from the peak summer months of June to August, when daylight lasted up to 15 hours. This transition signals the gradual shift towards autumn, as daylight diminishes further into the fall. The daylight duration has consistently increased from a modest 8 hours in January to its summer zenith, reflecting the seasonal changes inherent to the region. As September unfolds, the fade from the long, sun-soaked days of summer to the shorter, crisp days of fall emphasizes the cyclical nature of time in Port Angeles East, preparing residents for the cozy embrace of the forthcoming months.

Average Daylight Hours in Port Angeles East for September

The chart illustrates the variation in daylight duration in Port Angeles East throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 51m10h 14m11h 57m13h 42m15h 12m15h 58m15h 33m14h 11m12h 30m10h 45m9h 12m8h 24m
Data source: Port Angeles East daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Port Angeles East

As September ushers in the transition to autumn, winds in Port Angeles East experience a gentle lull, with an average wind speed of 2.0 m/s (5 mph). This marks a noticeable dip from the summer months, where the winds hovered around 2.5 m/s (6 mph) in July and August. The trend shows that as the year progresses, from a peak in late winter and early spring, the winds gradually calm down, reaching their most tranquil point in September, before picking up slightly again in late autumn. This serene September atmosphere creates an ideal backdrop for leisurely walks along the waterfront, inviting residents and visitors alike to savor the mild breezes as they herald the changing season.

Average September Wind Speed in Port Angeles East

The chart displays monthly wind speed patterns in Port Angeles East, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.73.22.42.02.32.22.52.42.0 m/s2.42.92.7
Data source: Port Angeles East September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Port Angeles East Compares to Other Months

The weather in Port Angeles East changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Port Angeles East and find detailed weather information for every month.

September and January present stark contrasts in weather patterns. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 26°C (79°F), with an average of 12°C (55°F). This month also experiences 113 mm (4.5 in) of precipitation over 13 days, accompanied by a relatively moderate humidity level of 74%. In contrast, January sees much colder temperatures, with a minimum of -10°C (13°F) and a maximum of 11°C (52°F), leading to an average temperature of just 2°C (36°F). Precipitation is more frequent in January, totaling 202 mm (8.0 in) across 17 days, and humidity rises to 86%. For more detailed weather information, visit Port Angeles East weather in January.

September and February present contrasting weather conditions. In September, temperatures can range from a minimum of 3°C (38°F) to a maximum of 26°C (79°F), with an average of 12°C (55°F), offering a mild and pleasant atmosphere. Although there is some precipitation, totaling 113 mm (4.5 in) over about 13 days, the humidity is relatively moderate at 74%.

In stark contrast, February experiences much colder temperatures, with a minimum of -14°C (7°F) and a maximum of 11°C (52°F), leading to an average of just 1°C (34°F). Precipitation increases to 146 mm (5.8 in) spread over 18 days, and humidity rises to 84%, creating a damp and chilly environment. For more detailed information about February weather, you can check Port Angeles East weather in February.

Comparing the weather in September and March reveals notable differences in temperature, precipitation, and humidity. In September, temperatures are more moderate, ranging from a minimum of 3°C (38°F) to a maximum of 26°C (79°F), with an average of 12°C (55°F). This month experiences around 113 mm (4.5 inches) of precipitation over approximately 13 days and has a humidity level of 74%. In contrast, March is much cooler, featuring a minimum temperature of -9°C (15°F) and an average of 3°C (37°F), with a maximum reaching 16°C (62°F). It records a slightly higher precipitation level of 126 mm (5.0 inches) spread across 17 days and has a higher humidity level of 85%. For more insights into the weather in March, you can visit Port Angeles East weather in March.

When comparing the weather in September and April, notable differences emerge. September boasts milder temperatures, with a minimum of 3°C (38°F) and an average of 12°C (55°F), peaking at a pleasant 26°C (79°F). In contrast, April experiences cooler conditions, starting as low as -5°C (24°F) and averaging only 5°C (42°F), with a maximum of 20°C (69°F). Precipitation levels are similar, with September receiving 113 mm (4.5 in) across 13 days and April slightly higher at 118 mm (4.7 in) over 16 days. Additionally, April tends to have higher humidity levels at 83%, compared to September's 74%. For more details on the April climate, you can check Port Angeles East weather in April.

In comparing the weather between September and May, September typically boasts a wider temperature range, with minimums around 3°C (38°F) and maximums reaching up to 26°C (79°F), averaging 12°C (55°F). In contrast, May starts off cooler, featuring minimum temperatures near 0°C (32°F) and maximums of 22°C (73°F), with an average of 10°C (50°F). Additionally, precipitation is slightly higher in September at 113 mm (4.5 in) over 13 days, compared to May's 91 mm (3.6 in) over the same number of days. Humidity also varies, with September having a humidity level of 74%, while May is slightly more humid at 84%. For a closer look at May weather specifics, you can visit Port Angeles East weather in May.

When comparing the weather in September and June, we see notable differences despite similar minimum temperatures and average values. September experiences a maximum temperature of 26°C (79°F), while June can reach up to 33°C (92°F), making June generally warmer. Additionally, September has a higher average precipitation of 113 mm (4.5 in) over 13 days compared to June’s 106 mm (4.2 in) during the same number of days. The humidity is also slightly higher in June at 84%, compared to 74% in September, contributing to a muggy feel during the earlier summer month. For more details on June weather, you can refer to this link: Port Angeles East weather in June.

When comparing the weather in September to that of July, significant differences become apparent. September experiences a wider temperature range, with minimums reaching 3°C (38°F) and maximums peaking at 26°C (79°F), whereas July has milder lows of 7°C (45°F) and highs of 27°C (81°F). Additionally, September is wetter, with 113 mm (4.5 in) of precipitation over 13 days, compared to July's drier conditions of only 39 mm (1.5 in) over 8 days. Humidity levels also differ slightly, with September at 74% and July slightly higher at 82%. For more details on July weather specifically, check out Port Angeles East weather in July.

In comparing the weather of September and August, it's evident that September experiences cooler temperatures overall, with a minimum of 3°C (38°F) compared to August's 7°C (44°F). The average temperature in September is 12°C (55°F), down from August’s 16°C (60°F), and the maximum temperature slightly decreases as well, reaching 26°C (79°F) in September versus 28°C (83°F) in August. Additionally, September sees significantly higher precipitation levels, with 113 mm (4.5 in) spread over 13 days, while August has only 37 mm (1.5 in) of rain on 6 days. Humidity levels remain similar, hovering around 74% in September and 73% in August. For more details on August weather, visit Port Angeles East weather in August.

In September, temperatures in Port Angeles East range from a minimum of 3°C (38°F) to a maximum of 26°C (79°F), with an average temperature of 12°C (55°F). The month experiences 113 mm (4.5 in) of precipitation over 13 days, accompanied by a humidity level of 74%. In contrast, October brings cooler conditions, with temperatures dipping to a minimum of -1°C (30°F) and an average of 7°C (46°F), although the maximum remains relatively mild at 22°C (71°F). October also sees an increase in precipitation to 137 mm (5.4 in) over the same number of rainy days, combined with a higher humidity of 83%. For more detailed weather insights, visit Port Angeles East weather in October.

In September, the weather is relatively mild, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 26°C (79°F) and an average of 12°C (55°F). This month sees a total precipitation of 113 mm (4.5 in) spread over 13 days, with humidity levels at 74%. In stark contrast, November brings significantly cooler temperatures, with a minimum of -9°C (16°F) and an average of 4°C (40°F), peaking at 13°C (56°F). Precipitation also increases to 211 mm (8.3 in) over 18 days, accompanied by higher humidity at 86%. For a deeper dive into what to expect, check out Port Angeles East weather in November.

September and December present stark contrasts in weather conditions. In September, temperatures typically range from a mild 3°C (38°F) at night to a warm 26°C (79°F) during the day, with an average of 12°C (55°F). This month experiences a fair amount of precipitation, totaling 113 mm (4.5 in) over approximately 13 days, alongside a humidity level of 74%. In contrast, December’s weather is much colder, with temperatures dipping as low as -13°C (9°F) and peaking at a cool 11°C (52°F), averaging just 2°C (36°F). Precipitation increases significantly during December, reaching 203 mm (8.0 in) spread across 19 days, and the humidity rises to 87%. For more details on weather specifics, you can check Port Angeles East weather in December.

Compare Port Angeles East's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Port Angeles East

As September unfolds in Port Angeles East, the weather begins to shift noticeably compared to the summer months. Temperatures drop, averaging around a mild 12°C, while higher maximums still flirt with the warmth of summer, peaking at 26°C. This transitional month also brings with it increased precipitation, with rain gracing the area on about half the days. Coupled with a humidity level of 74%, September marks a distinct change towards a cooler, wetter climate as nature prepares for the fall season. For further details on weather patterns, visit Port Angeles East Climate.