April Weather in Friday Harbor, United States

Last updated: February 24, 2025

April in Friday Harbor, United States offers a refreshing coastal experience as temperatures fluctuate from a mild 14°C (57°F) to a crisp 4°C (39°F). The average temperature hovers around 9°C (48°F), creating a cool yet inviting atmosphere. Expect a fair amount of precipitation, with 65 mm (2.6 in) falling over approximately 13 days, contributing to the area's lush scenery. Coupled with a humidity level of 86%, April presents a blend of moist air and vibrant landscapes, making it a dynamic time to explore the natural beauty of this charming destination.

April Temperature in Friday Harbor

As April ushers in spring, Friday Harbor experiences a noticeable warming trend. The minimum temperatures rise to 4°C (39°F), while average temperatures climb to a comfortable 9°C (48°F), peaking at a daytime maximum of 14°C (57°F). This marks a significant transition from the chill of winter months, reflecting an upward trajectory that will continue into May. The shift in weather not only signals the arrival of milder days but also brings a sense of rejuvenation, as the coastal town begins to awaken with vibrant blooms and outdoor activities. Embracing the crisp air and blossoming landscape, residents and visitors alike can enjoy a refreshing start to spring.

April Weather in Friday Harbor: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Friday Harbor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec444245485255575956524844
Data source: Temperature data for Friday Harbor generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Friday Harbor

In April, Friday Harbor experiences a noticeable decline in precipitation, with just 65 mm (2.6 in) of rain over 13 days—the lowest amount so far this year. This drop is a significant shift from the heavier rainfalls of earlier months, particularly January and February, which recorded 143 mm and 126 mm respectively. As spring takes hold, this decrease foreshadows the approaching dry season, where May and June will see even less rainfall, indicating a clear trend toward drier conditions. The gradual transition from the wet winter months to the relatively calmer spring reflects the region's seasonal rhythm, inviting residents to enjoy the milder weather ahead while still keeping an eye on the early showers typical of the Pacific Northwest.

April Precipitation Trends in Friday Harbor

The chart displays monthly precipitation patterns in Friday Harbor, with values for each month alongside April's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec14312684653932161568128194161
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Friday Harbor

April in Friday Harbor maintains a consistent humidity level of 86%, mirroring the figures observed in January, March, and slightly lower in February. This stability hints at a generally moist climate as the region transitions from the cold depths of winter toward the budding warmth of spring. As the month progresses, humidity begins to decline, with May seeing a drop to 81%, setting the stage for the drier summer months ahead. Overall, the data illustrates a trend of high humidity during the early months of the year, providing a refreshing backdrop to the picturesque coastal landscape that Friday Harbor is known for.

April Average Humidity in Friday Harbor

This chart illustrates the average monthly humidity levels in Friday Harbor, with April's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how April's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%86%86%81%83%84%77%76%88%87%87%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Friday Harbor

In April, Friday Harbor experiences a notable increase in its UV Index, reaching a value of 6, which falls into the high exposure category. This shift signifies a growing intensity of sunlight as the region transitions into spring, resulting in a burn time of just 25 minutes for unprotected skin. Compared to the earlier months, where the UV Index hovered between 2 and 5, April marks a clear uptrend, anticipating even higher levels in the months to come. As the temperatures rise and outdoor activities become more frequent, it's essential to remain vigilant and take protective measures during sunny outings. For more detailed information on UV levels throughout the year, visit Friday Harbor UV Index.

Maximum UV Index Levels in Friday Harbor for April

The chart shows the monthly maximum UV Index (UVI) for Friday Harbor in April, 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.
JanFebMarAprMayJunJulAugSepOctNovDec235689987521
Data source: Friday Harbor April 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.

April Sunshine in Friday Harbor

As spring unfolds in Friday Harbor, April shines as a standout month, boasting 246 hours of sunlight—a delightful increase from 216 hours in March. This upward trend continues into May, where the golden rays soar to 339 hours, suggesting that the region truly comes alive as the days grow longer. The pattern of gradual illumination reaches its zenith in July, when 390 hours bathes the area in light, before a gentle decline begins in August. This seasonal rhythm not only highlights April’s vibrant sunny disposition but also sets the stage for the rich, sun-drenched experiences awaiting residents and visitors alike in the summer months.

Monthly Sunshine Duration in Friday Harbor: April Highlighted

The April sunshine duration represents the total number of hours Friday Harbor experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec87h150h216h246h339h353h390h351h265h200h130h101h
Data source: Friday Harbor April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Friday Harbor During April

As April arrives in Friday Harbor, the promise of sunny weather begins to noticeably blossom, with a 55% chance of sunshine gracing the skies. This marks a significant increase from the cooler months, where January and February lingered around 21% and 29%, respectively. March also starts to shed its gray, climbing to 34%, but it’s April that truly signals spring's arrival, offering more than half the month bathed in sunlight. Following this sunny uptick, May and June may see slight declines, with chances of 46% and 58% respectively, yet they still maintain an inviting outlook. As summer approaches, Friday Harbor experiences a delightful peak in sun-soaked days, reaching up to 77% in July, reflecting an overall trend of increasing sunshine that elevates the beauty of the season.

Percentage of Sunny Days in April in Friday Harbor

The chart illustrates the percentage of sunny days in Friday Harbor throughout the year, with April 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 Friday Harbor experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%29%34%55%46%58%77%56%37%28%20%21%
Data source: Friday Harbor April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Friday Harbor in April

As the days grow longer in April, Friday Harbor experiences a delightful increase in daylight, offering around 13 hours of sunshine. This surge marks a significant jump from March, which enjoyed 11 hours of daylight, heralding the arrival of spring with its vibrant colors and lively atmosphere. Following this upward trend, May will push daylight to an impressive 15 hours, reaching its zenith in June at 16 hours. This gradual yet steady increase from the shorter days of winter not only ushers in warmth but also invites longer outdoor activities, making April a truly rewarding month for residents and visitors alike. As summer approaches, the anticipation builds for those glorious days filled with light and adventure.

Average Daylight Hours in Friday Harbor for April

The chart illustrates the variation in daylight duration in Friday Harbor throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 48m10h 12m11h 57m13h 44m15h 15m16h 2m15h 36m14h 13m12h 30m10h 44m9h 10m8h 21m
Data source: Friday Harbor daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Friday Harbor

In April, Friday Harbor experiences a gentle decline in wind speed, averaging 3.9 m/s (9 mph), marking it as one of the calmest months of the year. This notable dip follows a brisk March, where winds averaged 4.9 m/s (11 mph), and sets the stage for a gradual increase again in May. The early spring breezes are a refreshing change, providing a tranquil atmosphere as the island transitions into the warmer months. If we look at the broader trends, we see that the winter months typically feature stronger winds, peaking in December at an average of 6.7 m/s (15 mph), while the summer months maintain moderate speeds around 4.3 m/s (10 mph). Overall, April offers a serene moment in the year's wind cycle, an invitation to embrace the peaceful beauty of Friday Harbor.

Average April Wind Speed in Friday Harbor

The chart displays monthly wind speed patterns in Friday Harbor, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec6.36.44.93.9 m/s4.04.34.34.24.05.46.46.7
Data source: Friday Harbor April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Friday Harbor Compares to Other Months

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

April and January present contrasting weather patterns. In April, temperatures range from a minimum of 4°C (39°F) to a maximum of 14°C (57°F), with an average temperature of 9°C (48°F). The month experiences about 65 mm (2.6 in) of precipitation over approximately 13 days, while humidity remains consistently high at 86%. In contrast, January features cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 11°C (52°F), yielding an average of 7°C (44°F). This month sees significantly higher precipitation, totaling 143 mm (5.6 in) over 16 days, yet maintains the same humidity level of 86%. For a detailed look at January’s weather, you can visit Friday Harbor weather in January.

April generally offers milder temperatures compared to February, with minimum temperatures rising from -3°C (27°F) in February to 4°C (39°F) in April. The average temperature in February is slightly lower at 6°C (42°F), whereas in April it increases to 9°C (48°F). However, February experiences more precipitation, totaling 126 mm (5.0 in) over 17 days, compared to April's 65 mm (2.6 in) over 13 days. The humidity remains relatively consistent between the two months, at 86% in April and 85% in February. For a more detailed look at February weather, visit Friday Harbor weather in February.

In comparing the weather of March and April, it's clear that April experiences slightly warmer temperatures, with a minimum of 4°C (39°F) and an average of 9°C (48°F), compared to March's minimum of 2°C (35°F) and average of 7°C (45°F). While both months have similar humidity levels at 86%, April sees a decrease in precipitation, totaling 65 mm (2.6 in) over 13 days, in contrast to March's 84 mm (3.3 in) over 14 days. This suggests that April offers slightly better conditions for outdoor activities. For more detailed weather insights, you can check Friday Harbor weather in March.

April and May present a noticeable shift in weather patterns. In April, temperatures range from a minimum of 4°C (39°F) to a maximum of 14°C (57°F), with an average of 9°C (48°F). It is also quite wet, receiving 65 mm (2.6 in) of precipitation over 13 days and maintaining high humidity levels at 86%. In contrast, May enjoys slightly warmer temperatures, with minimums at 6°C (44°F), averages of 11°C (52°F), and maximums reaching 18°C (64°F). Additionally, May experiences less rainfall, with only 39 mm (1.5 in) over just 7 days, and a drop in humidity to 81%. For a closer look at the weather specifics in May, you can check out Friday Harbor weather in May.

In comparing the weather between April and June, it’s clear that June offers notably warmer temperatures. April sees a minimum of 4°C (39°F) and an average of 9°C (48°F), while June starts at a minimum of 10°C (49°F) and averages around 13°C (55°F). Additionally, June boasts higher maximum temperatures, reaching 20°C (69°F), compared to April’s maximum of 14°C (57°F). Precipitation is also significantly lower in June, with only 32 mm (1.3 in) over about six days, compared to April’s 65 mm (2.6 in) spread over 13 days. Both months maintain high humidity, with April slightly more humid at 86% compared to June’s 83%. For more detailed information, you can check Friday Harbor weather in June.

April and July present a striking contrast in weather conditions. In April, temperatures range from a chilly minimum of 4°C (39°F) to a maximum of 14°C (57°F), with an average of 9°C (48°F). The month is characterized by higher precipitation, totaling 65 mm (2.6 in) over approximately 13 days, and elevated humidity at 86%. In contrast, July enjoys milder temperatures, with a minimum of 11°C (52°F) and a maximum of 20°C (68°F), averaging 14°C (58°F). The month experiences significantly less precipitation, only 16 mm (0.6 in) over just 3 days, accompanied by a slightly lower humidity level of 84%. For more details, you can check Friday Harbor weather in July.

April and August offer distinctly different weather experiences. In April, temperatures range from a chilly minimum of 4°C (39°F) to a maximum of 14°C (57°F), with an average of 9°C (48°F). This month also brings considerable precipitation, with 65 mm (2.6 in) of rain spread over 13 days and high humidity at 86%. In contrast, August brings milder and more pleasant weather, featuring temperatures that range from a minimum of 12°C (55°F) to a maximum of 20°C (69°F), with an average temperature of 15°C (59°F). August experiences significantly less rainfall, totaling only 15 mm (0.6 in) over just 3 days, and lower humidity at 77%. For more specifics on August weather, you can check Friday Harbor weather in August.

April and September showcase contrasting weather patterns, reflecting the transition from spring to autumn. In April, temperatures range from a chilly 4°C (39°F) to a mild 14°C (57°F), with an average of 9°C (48°F). The month is characterized by high humidity at 86% and a significant amount of precipitation, totaling 65 mm (2.6 in) over 13 days. In contrast, September offers a more pleasant climate with temperatures starting at a minimum of 11°C (51°F) and peaking at 20°C (68°F), averaging around 13°C (57°F). Although slightly wetter with 68 mm (2.7 in) of rain over just 9 days, September's lower humidity at 76% makes it feel more comfortable. For more details on September weather, check out Friday Harbor weather in September.

April and October present moderately similar temperatures, with April experiencing slightly cooler averages; the minimum temperature in April is 4°C (39°F) compared to October's 5°C (41°F). This makes April's average of 9°C (48°F) marginally lower than October's 11°C (52°F). However, October tends to be wetter, with precipitation totals reaching 128 mm (5.1 in) over 15 days, which is notably higher than April's 65 mm (2.6 in) over 13 days. The humidity levels are fairly comparable, with April at 86% and October slightly higher at 88%. Overall, while both months share similar temperature ranges, October is characterized by increased precipitation. For more detailed insights, you can check the Friday Harbor weather in October.

April and November in Friday Harbor share similar temperature ranges, with minimum temperatures around 4°C (39°F) and average temperatures hovering around 9°C (48°F). However, April typically enjoys slightly warmer maximum temperatures of up to 14°C (57°F) compared to November's peak of 13°C (56°F). In terms of precipitation, November is considerably wetter, receiving 194 mm (7.6 in) over 19 days, while April sees only 65 mm (2.6 in) across 13 days. Both months experience high humidity levels, with November at 87% and April slightly lower at 86%. For more detailed information about November's weather, you can visit Friday Harbor weather in November.

April and December exhibit distinct weather characteristics, highlighting the transition from spring to winter. In April, temperatures range from a chilly minimum of 4°C (39°F) to a comfortable average of 9°C (48°F), peaking at 14°C (57°F). This month sees about 65 mm (2.6 in) of precipitation over 13 days, with humidity levels at 86%. In contrast, December experiences colder temperatures, with a minimum of -7°C (20°F) and an average of 7°C (45°F), peaking at 12°C (54°F). This winter month is also wetter, receiving 161 mm (6.3 in) of precipitation spread across 18 days, and maintaining a slightly higher humidity at 87%. For more details on December weather, you can visit Friday Harbor weather in December.

Compare Friday Harbor's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Friday Harbor

As April unfolds in Friday Harbor, it brings a refreshing shift from the cooler months, showcasing a combination of mild temperatures and increased rainfall that sets the stage for spring. With average daytime readings hovering around a comfortable 9°C, the landscape awakens, contrasting the winter chill. However, be prepared for those occasional April showers, as the month experiences a notable amount of precipitation over several days, contributing to the region’s lush greenery. This transition to more humid conditions, with humidity levels reaching 86%, offers a treat for nature enthusiasts keen on witnessing the vibrant blossoms of the season. For a deeper dive into the climatic patterns that accompany this charming month, explore the full details at Friday Harbor Climate.