May Weather in Friday Harbor, United States

Last updated: February 24, 2025

In May, Friday Harbor, United States, experiences a pleasant transition into spring, with temperatures peaking at a maximum of 18°C (64°F) and an average of 11°C (52°F), while dipping to a minimum of 6°C (44°F). The month is characterized by a notable humidity level of 81%, contributing to a slightly damp atmosphere. With 39 mm (1.5 in) of precipitation spread over 7 days, residents and visitors can expect brief showers interspersed with sunny spells, making it an ideal time for outdoor exploration amid blossoming landscapes.

May Temperature in Friday Harbor

In May, Friday Harbor begins to shake off the chill of winter, welcoming temperatures that herald the arrival of warmer days. With minimums rising to 6°C (44°F) and average temperatures reaching 11°C (52°F), this month offers a delightful transition as the landscape flourishes. The maximums peak at 18°C (64°F), promising ample opportunities for outdoor adventures under the soft spring sun. This steady increase in warmth from the cooler early months indicates a clear trend towards summer, inviting both locals and visitors to revel in the vibrant natural beauty and recreational offerings of this stunning locale.

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

The chart illustrates May 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.

May Precipitation in Friday Harbor

In Friday Harbor, May marks a notable shift in precipitation patterns, with rainfall dipping to 39 mm (1.5 in) over just 7 days, making it one of the driest months of the year. This decrease follows a downward trend from April's 65 mm and sets the stage for the even lighter precipitation that typically characterizes June and July. As spring gives way to summer, the frequency of rain diminishes significantly, reducing outdoor disruptions and allowing for more sunshine-filled days. The lower precipitation levels in May not only indicate a change in weather but also pave the way for enjoyable outdoor activities as the region transitions into its warmer months.

May Precipitation Trends in Friday Harbor

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

In Friday Harbor, the humidity trends throughout the year reveal a notable decrease as spring transitions into summer. May sees a dip to 81% humidity, marking a refreshing shift from the consistently high levels of 86% recorded in the earlier months. This reduction sets the stage for a gradual decline, continuing through the summer, with August reaching its lowest point at 77%. The pattern suggests that while the winter months envelop the area in moisture, the arrival of warmer weather in late spring brings a welcomed, albeit brief, reprieve from the higher humidity, highlighting the region's seasonal variability.

May Average Humidity in Friday Harbor

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

May UV Index in Friday Harbor

As May arrives in Friday Harbor, residents experience a noticeable surge in UV intensity, with the UV Index reaching a significant 8—indicating a very high exposure category. This is a stark leap from the moderate levels seen in earlier spring months like March and April. Consequently, outdoor enthusiasts should be particularly vigilant during this time, as the burn time is drastically reduced to just 15 minutes. This trend of increasing UV exposure persists into June and July, reflecting a typical seasonal pattern where the strength of the sun's rays peaks in the late spring and summer months. To stay informed about the UV conditions and protect your skin, be sure to check the detailed forecast at Friday Harbor UV Index.

Maximum UV Index Levels in Friday Harbor for May

The chart shows the monthly maximum UV Index (UVI) for Friday Harbor in May, 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 May 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.

May Sunshine in Friday Harbor

May is a particularly illuminating month in Friday Harbor, boasting an impressive 339 sunshine hours, which marks a vivid leap from the preceding months. After witnessing a consistent uptick in sunshine from just 87 hours in January to 246 hours in April, May unveils its radiant potential, paving the way for a sun-soaked June with 353 hours. This upward trend highlights the island's transition into summer, where bright days become the norm and outdoor activities thrive. As the seasons progress, the sun continues to shine brightly, peaking in July with a remarkable 390 hours before gradually tapering off in the late summer and fall months. Overall, May serves as a vibrant harbinger of the abundance of sunshine that characterizes the summer months in this picturesque locale.

Monthly Sunshine Duration in Friday Harbor: May Highlighted

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

Chance of Sun in Friday Harbor During May

In Friday Harbor, the likelihood of enjoying sunny weather sees a significant uptick as spring transitions into summer. January starts the year with just a 21% chance of sun, gradually climbing to 29% in February and 34% in March. The arrival of April marks a notable shift, with the sunshine probability rising to 55%. By May, the chance of sun stands at 46%, slightly lower than April but indicative of a trend towards brighter days. As the season progresses into June and July, the sun becomes a more consistent companion, peaking at 77% in July. This upward trajectory underscores May as a pivotal month where the warmth and light of summer begins to beckon, setting the stage for the sun-soaked days ahead.

Percentage of Sunny Days in May in Friday Harbor

The chart illustrates the percentage of sunny days in Friday Harbor throughout the year, with May 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 May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Friday Harbor in May

As the year unfolds in Friday Harbor, the days grow brighter, culminating in May, where the sun graces the sky for a generous 15 hours. This month marks a significant leap from April's 13 hours, showcasing spring's vibrant transition towards summer. Following this upward trend, June reaches its peak with 16 hours of daylight, inviting longer days filled with outdoor activities. Interestingly, the sunlight begins to wane after July, with hours gradually decreasing until they settle back at 8 hours by December. This rhythmic ebb and flow of daylight not only enhances the beauty of each season but also influences the rhythm of life in this picturesque locale.

Average Daylight Hours in Friday Harbor for May

The chart illustrates the variation in daylight duration in Friday Harbor throughout the year, with May 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.

May Winds in Friday Harbor

In Friday Harbor, May brings a gentle breeze with an average wind speed of 4.0 m/s (9 mph), marking one of the calmer months of the year. This slight dip in wind from the stronger gusts of January and February (averaging 6.3 m/s and 6.4 m/s respectively) is indicative of the transition into warmer spring weather. As the spring unfolds, wind speeds gradually decline, reaching their lowest in April before beginning a slow ascent again in June and July. Notably, while the winds in May are softer, they contribute to the idyllic charm of the coastal landscape, making it an inviting time for outdoor activities. Overall, the wind trends in Friday Harbor reflect a rhythmic ebb and flow, creating a serene environment that perfectly complements the blossoming beauty of spring.

Average May Wind Speed in Friday Harbor

The chart displays monthly wind speed patterns in Friday Harbor, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec6.36.44.93.94.0 m/s4.34.34.24.05.46.46.7
Data source: Friday Harbor May wind data, generated using information from the Copernicus Climate Change Service.

How May 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 May'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.

In comparing the weather between May and January, it is clear that January is significantly colder with average temperatures around 7°C (44°F) compared to May's more temperate 11°C (52°F). While May enjoys milder conditions with maximum temperatures reaching up to 18°C (64°F), January's temperatures peak at just 11°C (52°F). Additionally, January experiences much higher precipitation levels at 143 mm (5.6 in) over 16 days, contrasting with May's 39 mm (1.5 in) of rainfall spread over 7 days. Humidity levels are also notably higher in January at 86%, compared to 81% in May. For a detailed look at January weather, visit Friday Harbor weather in January.

In comparing the weather between May and February, it's clear that May offers a milder climate with temperatures ranging from a low of 6°C (44°F) to a high of 18°C (64°F) and an average of 11°C (52°F). Additionally, May experiences significantly less precipitation, totaling 39 mm (1.5 in) over about 7 days, and a humidity level of 81%. In contrast, February is much colder, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 11°C (52°F), averaging 6°C (42°F). Moreover, February sees much heavier rainfall, totaling 126 mm (5.0 in) across 17 days, and slightly higher humidity at 85%. For more detailed insights, you can check the Friday Harbor weather in February.

Comparing the weather in March and May reveals notable differences in temperature and precipitation patterns. In May, temperatures range from a minimum of 6°C (44°F) to a maximum of 18°C (64°F) with an average of 11°C (52°F), while March sees cooler temperatures, ranging from a minimum of 2°C (35°F) to a maximum of 12°C (55°F) and an average of 7°C (45°F). Additionally, May experiences less precipitation at 39 mm (1.5 in) over 7 days, compared to March's 84 mm (3.3 in) over 14 days. Humidity levels are slightly lower in May at 81%, compared to March's higher humidity of 86%. For more insights, you can refer to Friday Harbor weather in March.

In comparing the weather of April and May, we see some notable differences. April experiences slightly cooler temperatures, with an average of 9°C (48°F) compared to May's warmer average of 11°C (52°F). Additionally, April tends to be wetter, with a higher precipitation total of 65 mm (2.6 in) over 13 days, while May has 39 mm (1.5 in) of rain across only 7 days. Humidity levels are also marginally higher in April at 86%, compared to 81% in May. For more insights into the weather patterns, you can check out Friday Harbor weather in April.

In May, temperatures typically range from a minimum of 6°C (44°F) to a maximum of 18°C (64°F), with an average of 11°C (52°F). The month sees about 39 mm (1.5 in) of precipitation over approximately 7 days and maintains a relatively high humidity of 81%. In contrast, June experiences slightly warmer temperatures, with a minimum of 10°C (49°F), an average of 13°C (55°F), and a maximum of 20°C (69°F). Precipitation decreases to 32 mm (1.3 in) over just 6 days, while humidity remains marginally higher at 83%. For a detailed look at what to expect, you can check out Friday Harbor weather in June.

In comparing the weather between May and July, it is evident that July tends to be milder and drier. May experiences a broader temperature range with a minimum of 6°C (44°F) and a maximum of 18°C (64°F), while July has a cooler minimum of 11°C (52°F) and a slightly higher maximum of 20°C (68°F). Precipitation also shows a significant difference, with May receiving 39 mm (1.5 in) over 7 days, compared to just 16 mm (0.6 in) over 3 days in July. Humidity levels are fairly similar, with May at 81% and July slightly higher at 84%, which may contribute to a warmer feel during the summer month. For a more detailed look at July conditions, visit Friday Harbor weather in July.

The weather in May and August shows distinct differences in temperature and precipitation patterns. In May, temperatures range from a minimum of 6°C (44°F) to a maximum of 18°C (64°F), with an average of 11°C (52°F). The month experiences more rainfall, totaling 39 mm (1.5 in) over 7 days, and a higher humidity level of 81%. In contrast, August offers warmer temperatures, with a minimum of 12°C (55°F), an average of 15°C (59°F), and a maximum of 20°C (69°F). Additionally, August sees significantly less precipitation, only 15 mm (0.6 in) over just 3 days, paired with slightly lower humidity at 77%. For more specific details on August weather, check out Friday Harbor weather in August.

In comparing the weather of May and September, we see a notable shift in temperature and precipitation patterns. May typically features a cooler range, with minimum temperatures around 6°C (44°F) and averages of 11°C (52°F), whereas September enjoys milder conditions, starting at a minimum of 11°C (51°F) and averaging 13°C (57°F). Additionally, while May experiences lower precipitation levels at 39 mm (1.5 in) over 7 days, September sees a rise to 68 mm (2.7 in) over 9 days, indicating a wetter month. Interestingly, humidity is slightly higher in May at 81%, compared to September's 76%. For more detailed information on September weather conditions, visit Friday Harbor weather in September.

May and October present notable differences in weather, despite having similar average temperatures of 11°C (52°F). In May, temperatures range from a mild 6°C (44°F) to a pleasant 18°C (64°F), accompanied by relatively low precipitation of 39 mm (1.5 in) over about 7 days. In contrast, October experiences cooler maximum temperatures of 15°C (60°F) and a significant increase in precipitation, totaling 128 mm (5.1 in) across 15 days, along with higher humidity levels at 88%. This shift from May's relatively dry and warmer conditions to October's wetter and cooler climate marks a transition in the seasonal weather patterns. For more information, you can check the Friday Harbor weather in October.

May and November exhibit notable differences in weather patterns. May tends to be milder, with average temperatures ranging from a minimum of 6°C (44°F) to a maximum of 18°C (64°F), while November sees lower averages, with highs around 13°C (56°F) and lows dipping to 4°C (39°F). Precipitation is also significantly higher in November, totaling 194 mm (7.6 in) over 19 days, compared to May's 39 mm (1.5 in) spread over just 7 days. Additionally, November's higher humidity of 87% contrasts with May's more comfortable 81%. For more insights into November's weather, you can visit Friday Harbor weather in November.

May and December in Friday Harbor showcase striking differences in weather patterns. In May, temperatures range from a minimum of 6°C (44°F) to a maximum of 18°C (64°F), with an average of 11°C (52°F). The month sees relatively low precipitation at 39 mm (1.5 in) over about 7 days, and humidity levels hover around 81%. In contrast, December experiences much colder conditions, with temperatures dipping as low as -7°C (20°F) and averaging 7°C (45°F) with a maximum of 12°C (54°F). This month also brings significantly more precipitation, totaling 161 mm (6.3 in) over 18 days, alongside higher humidity at 87%. For more details, you can check Friday Harbor weather in December.

Compare Friday Harbor's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Friday Harbor

As May unfolds in Friday Harbor, the weather begins to shift, offering a delightful transition into warmer days. With maximum temperatures rising to 18°C (64°F) and an average hovering around 11°C (52°F), it's a welcome change from the chill of earlier months. Though precipitation remains a factor with around 39 mm (1.5 inches) spread over 7 days, the lush greenery thrives, painting the landscape in vibrant hues. The humidity levels at 81% add a soft warmth, making May a month of budding beauty and emerging life. For those curious about the broader climate trends in this picturesque locale, more information can be found at Friday Harbor Climate.