Last updated: February 24, 2025
July in Seattle showcases warm and inviting weather, with maximum temperatures reaching up to 32°C (91°F), providing a perfect backdrop for outdoor activities. The average temperature settles around 19°C (67°F), while evenings can cool down to a minimum of 11°C (52°F), making layered clothing a smart choice. Although the month brings a modest precipitation amount of 18 mm (0.7 in) over 5 days, the city's characteristic 79% humidity adds a refreshing touch to the warm summer days. Whether enjoying vibrant parks or exploring urban attractions, July in Seattle offers an appealing blend of warmth and mild moisture for residents and visitors alike.
In Seattle, the month of July shines with warmth, as the city basks in its summer splendor. Temperatures typically range from a comfortable 11°C (52°F) at night to a pleasant 32°C (91°F) under the afternoon sun, with an average of 19°C (67°F) throughout the day. This trend marks a notable peak in the temperature spectrum, transitioning from the cool beginnings of the year, where January braves lows of -7°C (19°F), to July's delightful highs. The steadily increasing temperatures from spring into summer highlight Seattle's appeal as an ideal destination for those seeking a vibrant urban climate and outdoor activities, all bathed in the long, sunny days of summer.
In July, Seattle experiences a notable shift in its precipitation pattern, with a mere 18 mm (0.7 in) of rain falling over just 5 days. This stark reduction in rainfall marks one of the driest months of the year, following a gradual decline in precipitation from June. As the Pacific Northwest basks under longer, sunnier days, the allure of summer becomes evident, offering residents and visitors alike a welcome reprieve from the rain-soaked months that precede it. This trend contrasts sharply with the wetter winter months, underscoring Seattle's reputation for diverse seasonal weather. With both temperature and sunshine on the rise, July's light precipitation lays the groundwork for vibrant summer activities amid the lush greenery that characterizes the region.
In Seattle, July marks a notable shift in humidity patterns, as the average humidity dips to 79%, providing a brief respite from the typically damp climate. This trend reflects a gradual decrease from the higher humidity levels observed earlier in the year, which peak in March at 87%. Summer brings a refreshing change, with August experiencing an even lower humidity of 63%, leading into a drier fall. By September, the numbers continue to sink to 62%, suggesting that the region enjoys its driest months before the rain returns in the autumn and winter, where humidity levels climb back towards the 80s. This cycle illustrates Seattle’s characteristic blend of dampness and temperate summer relief, making July a pleasant time to experience the city.
In July, Seattle experiences a UV Index of 9, maintaining the very high exposure category established in June. This means that outdoor enthusiasts should be particularly vigilant, as the risk of harm from unprotected sun exposure is significant, with a burn time of just 15 minutes. Comparatively, July shows a continuation of the upward trend in UV levels from earlier months, where both May and June hit notable peaks. As summer progresses, it's essential to prioritize sun safety by using sunscreen, wearing protective clothing, and seeking shade during peak hours. For further insights on local sun exposure levels, check out Seattle UV Index.
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As summer reaches its zenith in Seattle, July emerges as a beacon of sunshine, boasting a remarkable 361 hours of sunlight. This peak illumination follows a trend of increasing daylight hours, starting with a modest 80 hours in January and gradually building through the months. After a vibrant June with 311 hours, the city bursts into the full glow of summer, showcasing the longest days of the year. However, as the season transitions into August, there is a gentle decline, with sunshine hours tapering down to 330 hours. Seattle's weather pattern reveals a rich tapestry of light and warmth, inviting residents and visitors alike to revel in the splendor of its July skies before the autumn dims the dazzling display.
July in Seattle signals a noticeable shift towards sunnier days, boasting a 63% chance of sunshine. This marks a significant increase from the earlier months of the year, where the likelihood of clear skies hovers below 50%. Following a gradual climb from the dismal 16% in January to 58% in June, July emerges as one of the sunniest months, complemented by a dip to 49% in August. This upward trend in summer sunshine not only highlights July as a peak time for enjoying outdoor activities but also showcases Seattle's capacity to surprise with its vibrant summer weather after months of clouds and rain.
In Seattle, the month of July is a highlight of the year, as it maintains a robust 15 hours of daylight—the same as June. This period marks the zenith of sunlight, smoothly transitioning from the spring's longer days to slightly shorter hours as summer wanes into August, which sees a slight decline to 14 hours. The gradual increase in daylight from 8 hours in January to a peak in the midsummer months illustrates the vibrant shift in seasons. This trend reflects Seattle's unique latitude, where residents can relish the bright, extended days, making the bustling summer months particularly enjoyable for outdoor activities and exploration.
In July, the wind in Seattle often whispers rather than roars, with an average speed of just 1.9 m/s (4 mph), marking it as the calmest month of the year. This gentle breeze contrasts sharply with the more active winds of early winter months, which see averages reaching 3.4 to 3.5 m/s (8 mph). As the summer sun beckons, many locals and visitors enjoy the milder conditions, perfect for outdoor activities. Following July, the winds pick up again in August, settling back at 2.4 m/s (5 mph), indicating a gradual return to the breezier days that characterize the transition into autumn. Overall, July's subdued winds beautifully reflect the leisurely pace of summer in the Emerald City.
The weather in Seattle changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Seattle and find detailed weather information for every month.
July and January offer stark contrasts in weather patterns. In July, temperatures range from a mild 11°C (52°F) at night to a warm 32°C (91°F) during the day, with an average of 19°C (67°F). The month sees relatively low precipitation of 18 mm (0.7 in) over about 5 days, accompanied by a humidity level of 79%. In contrast, January's climate is much cooler, with temperatures dipping to a minimum of -7°C (19°F) and peaking at only 14°C (57°F), averaging around 6°C (43°F). This winter month is significantly wetter, with precipitation totaling 175 mm (6.9 in) across 16 days and heightened humidity at 86%. For a more detailed look at what January holds, you can check Seattle weather in January.
When comparing the weather in July and February, a stark contrast emerges in both temperature and precipitation. July boasts a mild temperature range, with lows of 11°C (52°F) and highs reaching up to 32°C (91°F), accompanied by relatively low precipitation of only 18 mm (0.7 in) over five days. In contrast, February experiences a much colder climate, with temperatures ranging from a chilly -10°C (14°F) to a maximum of 14°C (58°F). This month is also significantly wetter, recording a substantial 177 mm (7.0 in) of precipitation over 19 days. The humidity levels are slightly higher in February at 86%, compared to July's 79%. For more detailed information, you can check Seattle weather in February.
July and March present strikingly different weather patterns. In July, temperatures can range from a low of 11°C (52°F) to a high of 32°C (91°F), with an average of 19°C (67°F). This summer month boasts relatively low precipitation, totaling just 18 mm (0.7 in) over approximately 5 days, and a humidity level of 79%. In contrast, March experiences much cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 22°C (72°F), averaging around 7°C (46°F). The month is characterized by significantly higher precipitation, totaling 126 mm (4.9 in) over 17 days, coupled with a humidity level of 87%. For a more detailed look, check out Seattle weather in March.
When comparing the weather in April and July, it's clear that July enjoys much warmer temperatures, with a minimum of 11°C (52°F), an average of 19°C (67°F), and a maximum of 32°C (91°F). In contrast, April's temperatures are significantly cooler, ranging from a minimum of 1°C (34°F) to a maximum of 24°C (75°F). While July experiences relatively low precipitation, with only 18 mm (0.7 in) over 5 days, April is notably wetter, receiving 117 mm (4.6 in) across 14 days. Additionally, humidity is slightly lower in July at 79% compared to April’s 84%. For more detailed insights, you can explore Seattle weather in April.
When comparing the weather in July and May, notable differences emerge. July boasts a wider temperature range with minimums of 11°C (52°F) and maximums reaching 32°C (91°F), resulting in an average temperature of 19°C (67°F). In contrast, May has cooler temperatures, peaking at 28°C (82°F) and averaging just 14°C (57°F). Precipitation is significantly higher in May, with 68 mm (2.7 in) over 12 days compared to July's modest 18 mm (0.7 in) across 5 days. Humidity levels remain relatively consistent, with May at 81% and July at 79%. For more detailed information, check out Seattle weather in May.
In comparing the weather between June and July, July typically enjoys warmer temperatures with a minimum of 11°C (52°F) and an average of 19°C (67°F), while June starts off cooler with a minimum of 8°C (46°F) and an average of 17°C (62°F). Interestingly, June can reach a hotter maximum of 38°C (101°F), while July's maximum is more moderate at 32°C (91°F). Additionally, July experiences significantly less precipitation, with only 18 mm (0.7 in) over 5 days compared to June's 63 mm (2.5 in) over 9 days. Humidity levels are slightly lower in July at 79%, compared to June's 82%. For a closer look at Seattle's weather in June, check out Seattle weather in June.
July and August exhibit similar average temperatures, both hovering around 19°C (67°F), but August tends to be slightly warmer, with a maximum temperature reaching 33°C (93°F) compared to July’s peak of 32°C (91°F). Precipitation levels are also quite comparable, with July experiencing 18 mm (0.7 in) and August seeing a slight decrease to 16 mm (0.6 in), both falling over 5 days. Additionally, August features lower humidity at 63%, making it feel a bit drier than July's 79%. For more detailed information, check out Seattle weather in August.
July and September exhibit notable differences in weather patterns. In July, temperatures remain relatively warm with a minimum of 11°C (52°F), averaging around 19°C (67°F), and peaking at 32°C (91°F). The month features low precipitation, only 18 mm (0.7 in) over five days, along with high humidity levels at 79%. Conversely, September experiences cooler conditions, with a minimum temperature of 8°C (46°F) and an average of 16°C (62°F), while highs reach up to 30°C (86°F). However, this month is marked by significantly higher rainfall, totaling 100 mm (3.9 in) spread over 12 days, and lower humidity at 62%. For more details, you can visit Seattle weather in September.
In July, the weather is generally warm and pleasant, with average temperatures around 19°C (67°F) and maximums reaching up to 32°C (91°F). Humidity levels are moderate at 79%, and the month sees relatively low precipitation of 18 mm over about 5 days. In stark contrast, October brings much cooler temperatures, with an average of 11°C (52°F) and minimums plunging to -1°C (30°F). The month is significantly wetter, with precipitation totaling 155 mm over approximately 15 days and humidity slightly higher at 83%. For more details on October weather patterns, you can check Seattle weather in October.
July and November present strikingly different weather conditions. July is characterized by warmer temperatures, with averages reaching up to 19°C (67°F) and maximums soaring to 32°C (91°F), while precipitation is minimal at just 18 mm (0.7 in) across about 5 days. In stark contrast, November experiences much cooler temperatures, averaging around 8°C (47°F) and only peaking at 17°C (63°F). Additionally, it sees significantly higher precipitation levels, totaling 181 mm (7.1 in) over 18 days, coupled with increased humidity at 89%. For more insights on the comparison, you can check Seattle weather in November.
In July, the weather is typically warm in Seattle, with average temperatures around 19°C (67°F) and a maximum of 32°C (91°F), boasting relatively low precipitation of 18 mm (0.7 in) over just five days and a humidity of 79%. In contrast, December presents a starkly different climate, where temperatures drop significantly, averaging around 6°C (42°F) with highs reaching only 14°C (58°F). The month is characterized by heightened precipitation, totaling 196 mm (7.7 in) across 19 days and higher humidity at 88%. This shift from the warm summer to the chilly, wet winter highlights the diverse weather patterns characteristic of Seattle. For more information, you can explore Seattle weather in December.
In July, Seattle shines with a unique warmth that sets it apart from the rest of the year. With average temperatures climbing to a pleasant 19°C (67°F), daytime highs can even reach a sweltering 32°C (91°F), making this month the warmest. While humidity lingers at around 79%, the city experiences relatively little rainfall, with only 5 days of precipitation and a total of 18 mm throughout the month. This combination of warmth and limited precipitation provides a vibrant and inviting atmosphere, perfect for enjoying the countless outdoor activities Seattle has to offer. For more on how July's weather compares to other months, explore Seattle Climate.