May Weather in Alkmaar, Netherlands

Last updated: August 27, 2025

May in Alkmaar, Netherlands, is characterized by a delightful mix of mild temperatures and refreshing rainfall. With a maximum temperature reaching 26°C (79°F), residents and visitors can enjoy pleasant outdoor activities, while the average temperature settles at a comfortable 12°C (54°F). Early mornings can be crisp, with temperatures dipping to a minimum of 5°C (41°F). This month sees approximately 44 mm (1.7 in) of precipitation over 9 days, contributing to the lush greenery of the region. Humidity levels remain relatively high at 84%, creating that quintessential Dutch spring atmosphere. Embrace the beauty of Alkmaar in May, where every day offers a blend of warmth and invigorating freshness.

May Temperature in Alkmaar

In May, Alkmaar begins to relish the warmth of spring, with temperatures shifting significantly from the preceding months. The minimum temperature rises to 5°C (41°F), while the average comfortably sits at 12°C (54°F), reflecting a gentle embrace of milder weather. The maximum temperature can reach as high as 26°C (79°F), marking a pleasant transition that invites outdoor activities. This upward trend from April's 9°C average to May's 12°C illustrates how the region basks in increasing sunlight, making it an ideal month for enjoying the blooming landscapes and vibrant local culture. Overall, May in Alkmaar signifies the move towards the warmer months, filled with promise and beauty.

May Weather in Alkmaar: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Alkmaar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alkmaar, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec424144485461646561554844
Data source: Temperature data for Alkmaar 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 Alkmaar

May in Alkmaar brings a modest precipitation total of 44 mm (1.7 in), making it drier than the preceding months, particularly April, which recorded only 37 mm (1.5 in). This slight increase in rainfall is accompanied by 9 days of precipitation, indicating a trend towards a more stable, yet variable spring climate. In comparison to the upcoming wetter months, May serves as a gentle transition into the summer season, where the precipitation levels typically rise significantly. Overall, the weather in May is characterized by a balanced mix of sunny days and occasional showers, laying the groundwork for the lush greenery that follows in the summer months.

May Precipitation Trends in Alkmaar

The chart displays monthly precipitation patterns in Alkmaar, 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. In Alkmaar, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec62716737446669949211768106
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Alkmaar

As spring gives way to summer in Alkmaar, the month of May brings a slight dip in humidity, averaging 84%. This reduction marks a gradual decline from April's 85%, suggesting that the milder temperatures are allowing for more comfortable air conditions. As the year progresses, we observe a consistent trend: humidity levels generally decrease from the winter highs of 87% in January and February, transitioning to lower levels that peak in the summer months of July and August, where it hits a refreshing 78%. Thus, May acts as a bridge, leading residents from the cooler, more humid spring towards the drier warmth of summer, setting the stage for outdoor activities amidst the charming canals and historic architecture of this Dutch gem.

May Average Humidity in Alkmaar

This chart illustrates the average monthly humidity levels in Alkmaar, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Alkmaar is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%85%84%82%80%78%83%86%87%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Alkmaar

As spring progresses into May in Alkmaar, the UV Index sees a notable rise, peaking at 7—indicative of a high exposure category. This increase signals a shift from the milder UV levels of the earlier months, where January's low index of 1 gradually ascended to a moderate level by April. With a burn time of just 25 minutes in May, it's crucial for residents and visitors to adopt sun protection measures to safeguard their skin as they enjoy the longer, sunnier days. This upward trend in UV exposure will continue into the summer months, emphasizing the importance of staying vigilant. For detailed information on UV levels throughout the year, visit Alkmaar UV Index.

Maximum UV Index Levels in Alkmaar for May

The chart shows the monthly maximum UV Index (UVI) for Alkmaar 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. In May, the maximum UV index in Alkmaar typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Alkmaar 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 Alkmaar

In Alkmaar, Netherlands, May shines brightly with an impressive 419 hours of sunshine, marking a peak in daylight that sets the tone for the vibrant spring months. This considerable increase from 364 hours in April and the subsequent decline to 415 hours in June illustrates a clear trend of longer, sunnier days as spring transitions into summer. The overall pattern of the year reveals that sunshine progressively builds from a modest 113 hours in January, with each month bringing more light and warmth, peaking mid-summer before gently tapering off into the cooler months of autumn and winter. This delightful May abundance offers a beautiful glimpse of the Netherlands' blooming landscapes and lively outdoor activities, beckoning residents and visitors alike to revel in the picturesque season.

Monthly Sunshine Duration in Alkmaar: May Highlighted

The May sunshine duration represents the total number of hours Alkmaar 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.
JanFebMarAprMayJunJulAugSepOctNovDec113h203h294h364h419h415h426h403h330h246h198h139h
Data source: Alkmaar May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Alkmaar During May

In Alkmaar, the likelihood of sunny weather experiences a noticeable upward trend as spring unfolds, peaking in April at 41% before slightly declining in May to 37%. This brief dip during May, while still relatively high, suggests an intriguing transition as the region approaches summer. Although the chance of sunny days in May is lower than in the preceding month, it remains significantly higher than the bleak winter months. As summer approaches, the sun's presence becomes a more frequent delight, with June rebounding to 40%, setting the stage for brighter days ahead. So, while May may not be the sunniest month, it surely lays the groundwork for the sunny season that follows.

Percentage of Sunny Days in May in Alkmaar

The chart illustrates the percentage of sunny days in Alkmaar 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 Alkmaar experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%26%34%41%37%40%38%37%31%27%22%20%
Data source: Alkmaar May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Alkmaar in May

As spring transitions into summer, May in Alkmaar, Netherlands, welcomes a substantial increase in daylight hours, boasting around 15 hours of golden sunlight. This month marks a significant leap from April's 13 hours, reflecting nature's vibrant awakening and longer days perfect for outdoor activities and celebrations. Following May, June reaches its peak with a glorious 16 hours of daylight, creating a seamless continuum of brightness. This gradual buildup of daylight not only enhances the beauty of the lush landscapes but also invigorates the local culture, making it a prime time for festivals and gatherings. As summer wanes into August, daylight hours begin to taper off, but the delightful warmth lingers, showcasing the dynamic interplay of light that defines Alkmaar's seasonal rhythm.

Average Daylight Hours in Alkmaar for May

The chart illustrates the variation in daylight duration in Alkmaar throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 13m9h 52m11h 54m13h 59m15h 48m16h 45m16h 15m14h 36m12h 36m10h 33m8h 41m7h 41m
Data source: Alkmaar daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Alkmaar

In May, Alkmaar experiences a gentle breeze with an average wind speed of 5.5 m/s (12 mph), marking a noticeable decrease from the preceding months. This decline from 6.0 m/s in April reflects the transition into summer, where the winds typically become more subdued. Interestingly, this pattern continues into June, when the winds soften further to 4.4 m/s (10 mph), suggesting a shift towards calmer weather. As the year progresses, the wind speeds fluctuate, with October bringing a robust 7.1 m/s (16 mph), creating a compelling contrast to the milder breezes of spring. Overall, May stands out as a tranquil period, inviting residents and visitors alike to enjoy the serene atmosphere of Alkmaar.

Average May Wind Speed in Alkmaar

The chart displays monthly wind speed patterns in Alkmaar, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.66.66.36.05.5 m/s4.44.95.94.87.15.96.3
Data source: Alkmaar May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Alkmaar Compares to Other Months

Weather in Alkmaar varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Alkmaar, focusing on differences in temperature, rainfall, humidity, and UV levels.

May and January present distinctly different weather patterns. In May, temperatures range from a cool 5°C (41°F) to a pleasant 26°C (79°F), with an average of 12°C (54°F), making it a much warmer month overall. Precipitation is lighter, with 44 mm (1.7 in) over about 9 days and a humidity level of 84%. In contrast, January experiences colder temperatures, with a minimum of -3°C (27°F) and a maximum of 12°C (53°F), resulting in an average of just 5°C (42°F). This month also sees more precipitation, totaling 62 mm (2.4 in) over 13 days, coupled with slightly higher humidity at 87%. For more details on January weather, you can visit Alkmaar weather in January.

In comparing the weather of May and February, significant differences stand out. May enjoys milder temperatures, with averages around 12°C (54°F) and highs reaching up to 26°C (79°F), making it a much warmer month overall. In contrast, February is notably chillier, with average temperatures sitting at 5°C (42°F) and a maximum of only 14°C (58°F). Precipitation levels also differ, as February experiences more rain, totaling 71 mm (2.8 in) over 12 days, compared to May's 44 mm (1.7 in) across 9 days. Additionally, humidity is slightly higher in February at 87%, compared to 84% in May. For more details, check out Alkmaar weather in February.

In comparing the weather between March and May, it’s clear that May offers significantly warmer temperatures, with averages reaching 12°C (54°F) and maximum highs of 26°C (79°F), compared to March’s average of 6°C (44°F) and maximum of 15°C (60°F). While March experiences colder conditions, it also sees lower humidity levels, averaging 84%, slightly less than May's 86%. However, March tends to be wetter, with 67 mm (2.6 in) of precipitation over 13 days, whereas May has only 44 mm (1.7 in) over 9 days. For those interested in a more detailed look at March weather, you can explore Alkmaar weather in March.

In comparing the weather of May and April, May tends to be warmer with average temperatures ranging from a minimum of 5°C (41°F) to a maximum of 26°C (79°F), while April's temperatures are cooler, averaging between 2°C (36°F) and 23°C (74°F). Additionally, May experiences slightly more precipitation at 44 mm (1.7 in) over 9 days compared to April's 37 mm (1.5 in) over 8 days. Humidity levels are quite similar, with May at 84% and April at 85%, indicating a consistent moist environment. For a deeper look at April's weather specifics, you can visit Alkmaar weather in April.

May and June exhibit notable differences in weather patterns, reflecting the transition from spring to early summer. In May, temperatures range from a chilly minimum of 5°C (41°F) to a comfortable maximum of 26°C (79°F), with an average of 12°C (54°F). The month experiences 44 mm (1.7 in) of precipitation over 9 days, along with a higher humidity level of 84%. In contrast, June sees a warmer temperature range, with minimums at 10°C (50°F), maximums peaking at 29°C (84°F), and an average temperature of 16°C (61°F). However, it experiences slightly more rainfall at 66 mm (2.6 in) over 10 days, with humidity levels decreasing somewhat to 81%. For more details, check out Alkmaar weather in June.

May and July exhibit distinct differences in weather patterns. In May, temperatures range from a chillier minimum of 5°C (41°F) to a pleasant maximum of 26°C (79°F), with an average temperature of 12°C (54°F). The month sees around 44 mm (1.7 in) of rainfall over approximately 9 days, coupled with high humidity levels at 84%.

In contrast, July brings warmer conditions, with a minimum temperature of 12°C (53°F) and a maximum reaching 30°C (87°F), yielding an average of 18°C (64°F). This summer month experiences an increase in precipitation at 69 mm (2.7 in) over about 13 days, but the humidity slightly decreases to 80%. For more details, you can check Alkmaar weather in July.

In May, the weather is characterized by a mild warming trend, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 26°C (79°F) and an average of 12°C (54°F). The month experiences around 44 mm (1.7 in) of precipitation over 9 days, coupled with relatively high humidity at 84%. In contrast, August sees warmer temperatures, with a minimum of 12°C (54°F), an average of 18°C (65°F), and a maximum of 29°C (84°F). However, it also brings more rainfall, totaling 94 mm (3.7 in) across 15 days, while humidity decreases slightly to 78%. For a closer look at August weather specifics, you can visit Alkmaar weather in August.

May and September exhibit distinct weather patterns, reflecting the transition from spring to autumn. In May, temperatures range from a minimum of 5°C (41°F) to a maximum of 26°C (79°F), with an average of 12°C (54°F), and the month sees about 44 mm (1.7 in) of precipitation over approximately 9 days, resulting in a relatively high humidity of 84%. In contrast, September offers slightly warmer conditions with minimum temperatures around 9°C (49°F) and maximums of 25°C (78°F), averaging 16°C (61°F). However, it experiences increased rainfall, accumulating 92 mm (3.6 in) over about 12 days, while humidity levels remain similar at 83%. For a more detailed look at weather specifics, visit Alkmaar weather in September.

In May, temperatures in Alkmaar range from a minimum of 5°C (41°F) to a comfortable average of 12°C (54°F), peaking at a pleasant 26°C (79°F) on sunny days. The month experiences approximately 44 mm (1.7 in) of precipitation over about 9 days, with a relatively high humidity of 84%. In contrast, October sees slightly cooler temperatures, with a similar minimum of 5°C (41°F), an average of 13°C (56°F), and a maximum of 23°C (73°F). However, this month is much wetter, receiving around 117 mm (4.6 in) of rain over about 17 days and a similar humidity of 86%. Thus, while May offers warm and drier weather, October presents a cooler and more precipitation-heavy climate. For more detailed insights on October weather, you can check Alkmaar weather in October.

May typically brings warmer temperatures compared to November, with averages ranging from a minimum of 5°C (41°F) to a maximum of 26°C (79°F), while November's temperatures are cooler, averaging between 1°C (35°F) and 17°C (62°F). In terms of precipitation, November is rainier, receiving about 68 mm (2.7 in) over 15 days, compared to May's 44 mm (1.7 in) over just 9 days. Humidity levels are fairly similar, with November experiencing a slightly higher average at 87% compared to May's 84%. For more detailed insights, check out Alkmaar weather in November.

May and December present contrasting weather patterns that significantly influence the local climate. In May, temperatures range from a mild 5°C (41°F) to a comfortable 26°C (79°F), with an average of 12°C (54°F). This month sees relatively low precipitation, with 44 mm (1.7 in) falling over approximately 9 days, accompanied by a humidity level of 84%. In comparison, December experiences much chillier temperatures, ranging from a minimum of -2°C (28°F) to a maximum of 12°C (54°F), with an average of 7°C (44°F). The month is wetter, receiving 106 mm (4.2 in) of rain over 18 days, and the humidity rises slightly to 86%. The difference in weather between these two months highlights the transition from the freshness of spring to the cold of winter. For more details, visit Alkmaar weather in December.

Compare Alkmaar's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Alkmaar

As May arrives in Alkmaar, the city experiences a delightful shift in weather that sets it apart from the preceding months. Temperatures begin to warm up, offering a refreshing balance between the cool crispness of early spring and the impending heat of summer. The increased humidity levels create a lush, vibrant atmosphere, while the occasional showers keep the landscape beautifully green. Unlike the chill of April, May's weather entices residents and visitors alike to embrace the outdoors, fostering a spirited sense of renewal and adventure. To explore further about Alkmaar’s climate throughout the year, you can learn more here: Alkmaar Climate.