Last updated: February 24, 2025
In September, Port Angeles experiences a delightful transition into autumn, with maximum temperatures reaching 26°C (80°F) and an average of 12°C (54°F), making it a pleasant month for outdoor activities. However, the cooler nights can drop to a minimum of 2°C (37°F), so layering is recommended. This month also witnesses 106 mm (4.2 in) of rainfall over approximately 13 days, contributing to the region's lush landscapes. With a humidity level around 74%, the air feels crisp yet refreshing, encapsulating the charm of early fall in the Pacific Northwest.
In September, Port Angeles enjoys a pleasant transition from summer to fall, characterized by a minimum temperature of 2°C (37°F) and a maximum reaching 26°C (80°F). With an average temperature of 12°C (54°F), the month provides a comfortable climate for outdoor activities, allowing visitors to relish in the mild weather. As summer's warmth begins to wane, residents and travelers can appreciate the comfortable range that September offers, making it an ideal time to explore the area's natural beauty before the cooler autumn months set in.
In September, Port Angeles experiences a notable uptick in precipitation, with 106 mm (4.2 in) of rain spread across 13 days. This marks a transition into the wetter months, following the relatively dry summer that saw just 27 mm (1.1 in) in both July and August. As the days shorten and temperatures cool, the city's precipitation begins to mirror more closely that of the preceding months, setting the stage for the heavier rainfall of October and November, when totals leap to 158 mm (6.2 in) and 246 mm (9.7 in), respectively. Thus, September serves as a critical pivot, hinting at the embrace of the upcoming fall and winter seasons characterized by frequent showers.
In September, Port Angeles experiences a moderate humidity level of 74%, marking a slight increase from the drier summer months of July and August, which saw humidity levels at 82% and 73%, respectively. This transition into fall begins a gradual rise in moisture, as the city typically encounters its most humid months later in the year. From October through December, humidity levels climb again, peaking at 87% in December. This trend highlights a consistent seasonal pattern where drier summer conditions give way to wetter and more humid autumn and winter months, making September a pivotal point in the shift from the dry warmth of summer to the cooler, wetter climates that define the Pacific Northwest.
As September rolls into Port Angeles, the UV Index reflects a moderate yet notable decline from the peak summer months. With a UV Index of 7, categorized as high, residents and visitors are advised to be mindful of sun exposure, as the burn time is reduced to 25 minutes. This shift from August’s UV Index of 8 indicates a gradual easing of intensity as autumn approaches. However, with very high levels persisting earlier in the summer, individuals should maintain awareness of sun safety practices even as temperatures start to cool. For more detailed insights, check out the Port Angeles UV Index, ensuring you’re prepared for the changing rays of September.
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As summer fades into autumn, September in Port Angeles shines with a brilliant 261 hours of sunlight, marking a gentle decline from the intense summer months that see nearly 375 hours in July. This month reflects a transitional phase, where the golden glow of late summer still fills the skies, yet hints of cooler days ahead begin to creep in. Notably, September enjoys significantly more sunlight than its autumn counterparts, with October trailing off to just 201 hours. This trend illustrates how September remains a cherished bridge between the vibrant days of summer and the subdued hues of fall, inviting both locals and visitors to savor the last rays of sunshine before winter sets in.
In Port Angeles, September marks a transition as the summer warmth begins to fade, reflected in a 36% chance of sunny weather. This likelihood is a dip from the peak sunshine months of July and August, which boast probabilities of 72% and 55% respectively. Interestingly, as spring gives way to summer, sunshine chances escalate significantly, reaching their highest in July. However, as autumn sets in, the likelihood also retreats, aligning with the overall trend of decreasing sunny days moving into the fall. Therefore, while September offers a moderate chance of clear skies, it’s a gentle reminder that brighter days are gradually yielding to the approaching cooler season.
As summer gives way to fall, September in Port Angeles witnesses a noteworthy shift in daylight duration, receding to an average of 12 hours. This marks a gradual decline from the peak of 15 hours enjoyed in the heart of summer months—June, July, and August—when the sun graces the region for longer stretches. While the longer days of spring in April and early summer evoke a sense of vibrancy, the transition to autumn begins to subtly embrace shorter daylight. Following September, the daylight duration continues its descent, paving the way for the cozy, darker days of October and November, where the daylight shrinks to just 10 and 9 hours, respectively.
In September, Port Angeles experiences a gentle breeze, with an average wind speed of 2.3 m/s (5 mph), slightly decreasing from the summer months. This dip is consistent with the overall trend we see as the year progresses; after peaking in the spring and summer, where winds reached 2.9 m/s (6 mph) in July and August, the winds begin to mellow. With October averaging 2.5 m/s (6 mph), it appears that autumn ushers in a more subdued atmosphere, transitioning from vibrant summer gales to the tranquil whispers of fall. While the winds may ease, the character of the coastal landscape remains invigorating, inviting both locals and visitors to enjoy the picturesque scenery of Port Angeles as summer gracefully yields to autumn.
The weather in Port Angeles 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 and find detailed weather information for every month.
September and January present starkly contrasting weather patterns. In September, temperatures range from a mild 2°C (37°F) to a warm 26°C (80°F), with an average of 12°C (54°F), making it a comfortable month for outdoor activities. Humidity sits at 74%, with 106 mm (4.2 in) of precipitation spread over 13 days. In contrast, January experiences significantly colder conditions, with temperatures fluctuating from a frigid -12°C (11°F) to a maximum of only 11°C (52°F) and an average of 2°C (36°F). This month is substantially wetter, with 234 mm (9.2 in) of precipitation over 18 days and higher humidity at 86%. For a more detailed look at January weather, you can visit Port Angeles weather in January.
In comparing the weather of September and February, the differences are stark. September enjoys milder temperatures with a minimum of 2°C (37°F) and a comfortable average of 12°C (54°F), peaking at a pleasant 26°C (80°F). However, it also experiences considerable rainfall, with 106 mm (4.2 in) over 13 days and a humidity level of 74%. In contrast, February is much colder, with temperatures ranging from a minimum of -14°C (7°F) to an average of 0°C (33°F), and topping out at only 10°C (51°F). This month sees more precipitation overall, totaling 169 mm (6.7 in) across 18 days, accompanied by higher humidity at 84%. For more insight into February weather, you can visit Port Angeles weather in February.
September and March showcase quite contrasting weather patterns. In September, temperatures range from a minimum of 2°C (37°F) to a maximum of 26°C (80°F), with an average of 12°C (54°F). This month experiences around 106 mm (4.2 in) of precipitation on about 13 days, with humidity averaging 74%. In comparison, March is cooler, with temperatures ranging from a minimum of -10°C (15°F) to a maximum of 16°C (62°F) and an average of 2°C (37°F). Precipitation in March is higher at 144 mm (5.7 in) over approximately 18 days, and the humidity is slightly increased at 85%. For more detailed insights into March weather, you can visit Port Angeles weather in March.
When comparing the weather in September and April, several key differences emerge. September tends to be warmer, with average temperatures reaching 12°C (54°F) compared to April's lower average of 5°C (41°F). While both months experience notable precipitation, April sees slightly more at 125 mm (4.9 in) over 16 days, compared to September's 106 mm (4.2 in) over 13 days. Additionally, April has higher humidity levels at 83%, as opposed to September's 74%. For those interested in learning more about the specifics of April weather, you can check out Port Angeles weather in April.
September weather tends to be warmer than May, with average temperatures ranging from a minimum of 2°C (37°F) to a maximum of 26°C (80°F) compared to May's range of -1°C (31°F) to 23°C (73°F). Despite September's overall warmth, it sees slightly more precipitation, totaling 106 mm (4.2 in) over 13 days, while May has 84 mm (3.3 in) over the same number of days. Humidity levels are somewhat lower in September at 74% compared to May's 84%, giving September a more comfortable feel, although both months experience considerable moisture. For a closer look at the weather in May, check out Port Angeles weather in May.
When comparing the weather in September and June, notable differences emerge. September sees a slight temperature range with minimums around 2°C (37°F) and maximums peaking at 26°C (80°F), while June offers more warmth, with temperatures ranging from 3°C (37°F) to a high of 32°C (90°F). Precipitation levels are relatively close, with September experiencing 106 mm (4.2 in) over 13 days, compared to June's 85 mm (3.3 in) over 12 days. Humidity is also slightly higher in June at 84%, compared to 74% in September, reflecting the transition into fall. For more insights about June weather, you can check Port Angeles weather in June.
In comparing the weather of September to that of July, we see notable differences in temperature and precipitation. September experiences a broader temperature range, with minimums reaching as low as 2°C (37°F) and maximums up to 26°C (80°F), averaging around 12°C (54°F). In contrast, July's temperatures are slightly warmer, with minimums of 6°C (43°F) and maximums peaking at 27°C (81°F), averaging about 14°C (57°F).
Additionally, September is significantly wetter, receiving 106 mm (4.2 in) of precipitation over 13 days, while July is relatively dry, with only 27 mm (1.1 in) over just 6 days. The humidity levels in July are higher at 82%, compared to September's 74%. For more detailed information, you can check Port Angeles weather in July.
In comparing the weather between August and September, it's evident that September experiences cooler temperatures, with minimums dropping from 6°C (43°F) in August to just 2°C (37°F) in September. The average temperature also reflects this change, decreasing from 15°C (59°F) in August to 12°C (54°F) in September. Additionally, September sees a significant increase in precipitation, totaling 106 mm (4.2 in) over 13 days, compared to just 27 mm (1.1 in) over 5 days in August. Humidity levels remain quite similar, with September at 74% and August at 73%. For more detailed insights on August weather, you can check Port Angeles weather in August.
September's weather shows a pleasant transition from summer with average temperatures around 12°C (54°F) and a maximum of 26°C (80°F), accompanied by 106 mm (4.2 in) of precipitation over 13 days. In contrast, October brings cooler temperatures, with averages dropping to 7°C (45°F) and highs reaching only 22°C (72°F). Rainfall increases to 158 mm (6.2 in) over 15 days, and humidity rises to 83%, creating a notably more damp atmosphere. For a detailed look at Port Angeles weather in October, visit Port Angeles weather in October.
September and November present contrasting weather patterns as the seasons transition from summer to winter. In September, temperatures range from a mild 2°C (37°F) at night to a warm 26°C (80°F) during the day, making it generally more pleasant with an average of 12°C (54°F). However, the month experiences considerable rainfall, totaling 106 mm (4.2 in) over 13 days, with a relatively comfortable humidity of 74%.
In stark contrast, November brings cooler temperatures, with nighttime lows dropping to -9°C (15°F) and daytime highs reaching only up to 13°C (56°F), resulting in an average temperature of just 4°C (40°F). Rainfall also increases significantly in November, with 246 mm (9.7 in) spread over 18 days, and humidity rises to 86%, contributing to a much colder and damper atmosphere. For more detailed information, you can check Port Angeles weather in November.
In September, the weather exhibits a mild warmth with average temperatures around 12°C (54°F), reaching a maximum of 26°C (80°F). The month sees about 106 mm (4.2 in) of precipitation over 13 days, alongside a relatively moderate humidity level of 74%. In contrast, December brings a significant drop in temperatures, with averages hovering around 2°C (35°F) and nighttime lows plummeting to -13°C (9°F). Additionally, December is rainier, receiving approximately 235 mm (9.3 in) of precipitation across 21 days and experiencing a higher humidity level of 87%. For more details on December weather, visit Port Angeles weather in December.
As September unfolds in Port Angeles, the weather transitions from the warmth of summer to the coolness of fall, offering a unique blend of temperatures and conditions. The month typically presents warmer days with a maximum temperature peaking at around 26°C (80°F), while evenings cool down significantly, averaging a brisk 12°C (54°F). This is accompanied by an increase in precipitation, with 13 days bringing 106 mm (4.2 in) of rainfall, making it one of the wetter months. The humidity levels hover at about 74%, enriching the coastal air. For those considering a visit, September's weather reflects the beautiful turning of the season, showcasing the stunning landscapes while preparing for the chillier months ahead. To explore more about the weather throughout the year, visit Port Angeles Climate.