May Weather in Ostend, Belgium

Last updated: August 21, 2025

May in Ostend, Belgium, offers a delightful blend of mild temperatures and vibrant spring ambiance. With a maximum of 24°C (75°F) and an average of 13°C (55°F), the weather encourages outdoor exploration and leisurely strolls along the coast. However, cooler nights can dip to a minimum of 6°C (42°F), so be prepared for some brisk evenings. This month sees about 58 mm (2.3 in) of rain spread over 11 days, contributing to the region's lush scenery. With humidity levels at a high 82%, the air feels fresh and invigorating, making May an enchanting time to experience the charm of Ostend.

May Temperature in Ostend

May in Ostend beckons with pleasant warmth as spring transitions into early summer. With temperatures ranging from a minimum of 6°C (42°F) to a comfortable maximum of 24°C (75°F), this month marks a significant rise compared to the cooler months preceding it. The average temperature of 13°C (55°F) invites outdoor exploration, making it an ideal time for seaside strolls and enjoying local events. As the days lengthen and the sun shines brighter, the warmth of May encourages both locals and visitors to embrace the vibrant atmosphere of this charming Belgian coastal town, shedding the chill of winter for sunnier days ahead.

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

The chart illustrates May temperature patterns in Ostend, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ostend, 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).
JanFebMarAprMayJunJulAugSepOctNovDec424345495562656662564945
Data source: Temperature data for Ostend generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Ostend

In May, Ostend experiences a moderate precipitation total of 58 mm (2.3 in), falling slightly below the wetter months that precede and follow it. This month sees about 11 days of rain, offering a blend of sunny spells and brief showers that characterize springtime. Compared to April’s significantly lower 37 mm (1.5 in) of rain over just 8 days, May marks a return to the more typical dampness of the season. The trend of increasing rainfall continues into June, suggesting that as the year progresses, Ostend is known for its transitional weather, where the playful spring often shifts into a more consistently rainy summer.

May Precipitation Trends in Ostend

The chart displays monthly precipitation patterns in Ostend, 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 Ostend, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec77716937586262867811078129
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Ostend

In May, Ostend, Belgium experiences a slight but welcoming dip in humidity at 82%, marking a transition towards a drier climate as the summer approaches. This decrease follows a gradual trend from the peak humidity levels of 91% in January, steadily declining over the months. April’s 85% sets the stage for May’s inviting conditions, which are mirrored again in June. This consistent humidity level in early summer creates a comfortable atmosphere for residents and visitors alike, offering a delightful reprieve from the heavier humidity of the earlier months, while still leaving room for the refreshing coastal air that Ostend is known for.

May Average Humidity in Ostend

This chart illustrates the average monthly humidity levels in Ostend, 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 Ostend is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%85%82%82%80%76%82%89%92%92%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Ostend

In May, the UV Index in Ostend, Belgium, reaches a significant 7, indicating a high level of solar intensity that demands attention. As the days grow sunnier and warmer, the burn time for unprotected skin decreases to just 25 minutes, urging both locals and visitors to take precautionary measures. This month marks a noticeable increase from the moderate levels of 4 and 5 recorded in March and April, signaling a transition into the summer months where sun safety becomes increasingly crucial. With the UV Index climbing higher in June and July, understanding these trends is vital for enjoying the outdoors safely. For detailed information on daily UV levels, check the Ostend UV Index.

Maximum UV Index Levels in Ostend for May

The chart shows the monthly maximum UV Index (UVI) for Ostend 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 Ostend typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Ostend 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 Ostend

In Ostend, Belgium, May heralds the peak of sunshine, boasting an impressive 411 hours of daylight, setting the stage for a vibrant summer. As the months transition from the bleakness of winter, where January barely scrapes 122 hours of sun, the light progressively intensifies, with April bringing a more cheerful 357 hours. Following May, June and July continue this upward trend, reaching 419 and 425 hours, respectively, showcasing the coastal city's allure during the warmer months. As the summer wanes, sunshine hours begin to diminish in August, dropping to 395 hours, and further decline through autumn. This clear trend reveals how Ostend thrives in sunshine, making May not just a month of warmth, but a vivid celebration of light as the beach town comes alive.

Monthly Sunshine Duration in Ostend: May Highlighted

The May sunshine duration represents the total number of hours Ostend 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.
JanFebMarAprMayJunJulAugSepOctNovDec122h200h283h357h411h419h425h395h328h248h203h158h
Data source: Ostend May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ostend During May

As May approaches in Ostend, Belgium, the chances of sunny weather experience a small dip to 38%, reflecting a slight decline from 51% in April. This trend is not uncommon, as sunny days peak in the spring months before giving way to the more capricious summer climate. After enjoying the blossoming warmth of April, May often brings a mix of delightful sunny spells and the occasional overcast day, reminding us that spring is a transitional season. Despite this drop, the likelihood of sunshine in May remains considerably higher than the winter months, making it an ideal time for locals and visitors alike to embrace outdoor activities along the picturesque Belgian coast.

Percentage of Sunny Days in May in Ostend

The chart illustrates the percentage of sunny days in Ostend 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 Ostend experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec15%30%39%51%38%35%39%36%37%32%22%15%
Data source: Ostend May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ostend in May

As the year unfolds in Ostend, Belgium, the progression of daylight duration vividly reflects the seasonal shift. Starting from 8 hours in January, the daylight gradually increases, reaching 9 hours in February and then accelerating to 11 hours by March. With the arrival of spring, April boasts a brightening landscape with 13 hours of daylight, leading into May, when the days blossom into 15 hours of sunlight. This upward trend continues into June and July, peaking at 16 hours, the height of summer's embrace. As summer wanes, August sees a slight decline to 14 hours, followed by a gentle descent through September and October before settling back to 8 hours in November and a dimming 7 hours in December. This rhythmic cycle of daylight not only enhances the beauty of Ostend but also inspires a vibrant spirit as residents and visitors alike relish the longer days of spring and summer.

Average Daylight Hours in Ostend for May

The chart illustrates the variation in daylight duration in Ostend throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 26m9h 59m11h 55m13h 53m15h 35m16h 29m16h14h 28m12h 34m10h 37m8h 52m7h 56m
Data source: Ostend daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Ostend

In Ostend, Belgium, May ushers in a gentle breeze with an average wind speed of 5.7 m/s (13 mph), slightly tapering off from the gustier months of winter and early spring. This decline in wind intensity follows a trend observed as we transition from the brisk winds of winter, peaking at 6.6 m/s (15 mph) in October, to the calmer summer months, where June sees the lowest average at 4.2 m/s (9 mph). May provides a pleasant balance, making it a delightful time for seaside strolls. The consistent winds throughout the year, ranging from 5.1 m/s (11 mph) in July to 6.5 m/s (15 mph) in February, highlight Ostend's captivating coastal climate, inviting visitors to enjoy both the fresh air and the stunning vistas.

Average May Wind Speed in Ostend

The chart displays monthly wind speed patterns in Ostend, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.46.56.05.85.7 m/s4.25.15.84.86.65.66.4
Data source: Ostend May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Ostend Compares to Other Months

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

In May, temperatures in Ostend generally range from a minimum of 6°C (42°F) to a pleasant maximum of 24°C (75°F), with an average temperature of 13°C (55°F). The weather is relatively mild with 58 mm (2.3 in) of precipitation over approximately 11 days, and humidity is relatively high at 82%. In contrast, January brings much colder conditions, with temperatures dropping as low as -3°C (27°F) and only reaching an average high of 13°C (55°F). The average temperature sits at 6°C (43°F), while precipitation increases to 77 mm (3.0 in) spread across 14 days, accompanied by higher humidity at 91%. For more details on January's weather, visit Ostend weather in January.

In comparing the weather between May and February, May offers a significantly warmer climate with average temperatures ranging from 6°C (42°F) to a pleasant 24°C (75°F), while February's temperatures are notably cooler, with averages from -5°C (24°F) to 14°C (57°F). Precipitation levels in February are slightly higher at 71 mm (2.8 in) over 13 days, compared to May's 58 mm (2.3 in) over 11 days, indicating a wetter February overall. Additionally, February's humidity is slightly higher at 89%, compared to May's 82%, making February feel more damp and colder. For more detailed insights on February weather, check out Ostend weather in February.

When comparing the weather in May and March, May generally offers milder temperatures, with a minimum of 6°C (42°F) and a pleasant average of 13°C (55°F), peaking at a maximum of 24°C (75°F). In contrast, March experiences much cooler conditions, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 17°C (64°F) and an average of 7°C (45°F). While May sees about 58 mm (2.3 in) of precipitation over 11 days, March has slightly higher precipitation at 69 mm (2.7 in) over 14 days. Additionally, humidity levels in March are marginally higher at 87%, compared to May's 82%. For more detailed information on the weather conditions during March, visit Ostend weather in March.

In comparing the weather of May and April, it’s evident that May tends to be warmer, with average temperatures ranging from a minimum of 6°C (42°F) to a maximum of 24°C (75°F), compared to April’s average range of 2°C (36°F) to 22°C (71°F). Additionally, May experiences slightly more precipitation at 58 mm (2.3 in) over 11 days, while April sees only 37 mm (1.5 in) over 8 days. Humidity levels remain fairly high in both months, with May at 82% and April at 85%, but overall, May presents a more pleasant climate conducive to outdoor activities. For more detailed weather insights, check Ostend weather in April.

May and June weather exhibit notable differences, particularly in temperature. May starts with cooler temperatures, ranging from a minimum of 6°C (42°F) to a maximum of 24°C (75°F), with an average of 13°C (55°F). In contrast, June enjoys warmer conditions, with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 27°C (81°F), averaging 17°C (62°F). Both months have similar humidity levels at 82%, but June experiences slightly more precipitation, totaling 62 mm (2.5 in) over 8 days compared to May's 58 mm (2.3 in) over 11 days. For more detailed information about June weather, visit Ostend weather in June.

May and July in Ostend exhibit notable differences in weather characteristics. In May, temperatures range from a cool 6°C (42°F) at night to a comfortable 24°C (75°F) during the day, with an average of 13°C (55°F). Precipitation during this month totals 58 mm (2.3 in) over 11 days, and the humidity reaches a relatively high 82%. In contrast, July brings warmer conditions, with minimum temperatures of 13°C (56°F) and maximums soaring to 32°C (89°F), resulting in a higher average temperature of 18°C (65°F). Although July sees slightly more precipitation at 62 mm (2.5 in) over the same number of rainy days, the humidity is slightly lower at 80%. For more detailed insights, you can explore Ostend weather in July.

In comparing the weather between May and August, we see a marked shift in temperature and precipitation patterns. May experiences cooler temperatures, ranging from a minimum of 6°C (42°F) to a maximum of 24°C (75°F), with an average of 13°C (55°F). It also sees 58 mm (2.3 in) of rainfall over approximately 11 days, coupled with a high humidity level of 82%. In contrast, August offers warmer conditions, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 30°C (87°F) and an average of 19°C (66°F). However, it also brings more rainfall, totaling 86 mm (3.4 in) over 15 days, and slightly lower humidity at 76%. For a more detailed look at August conditions, you can check Ostend weather in August.

May and September both bring a mild climate, but September tends to be slightly warmer overall. In May, temperatures range from a minimum of 6°C (42°F) to a maximum of 24°C (75°F), averaging around 13°C (55°F). In contrast, September sees a minimum of 10°C (50°F) and a maximum of 26°C (80°F), with an average of 16°C (62°F). While both months experience similar levels of precipitation with 11 rainy days, September has a bit more rainfall at 78 mm (3.1 in) compared to May's 58 mm (2.3 in). The humidity remains consistent at 82% in both months, providing a similar feeling of dampness in the air. For more detailed information on September weather, check out Ostend weather in September.

In May, temperatures in Ostend range from a minimum of 6°C (42°F) to a maximum of 24°C (75°F), with an average of 13°C (55°F). The month experiences about 58 mm (2.3 in) of precipitation over 11 days, accompanied by a humidity level of 82%. In contrast, October presents a slightly chillier climate with minimum temperatures around 5°C (42°F), peaking at 22°C (72°F) and averaging 14°C (57°F). This month is significantly wetter, receiving approximately 110 mm (4.3 in) of rainfall over 17 days, and features higher humidity at 89%. For more information about the specific climate conditions, you can check Ostend weather in October.

In May, temperatures typically range from a minimum of 6°C (42°F) to a maximum of 24°C (75°F), offering a pleasant average of 13°C (55°F). The month experiences about 58 mm (2.3 in) of precipitation over approximately 11 days, accompanied by a humidity level of 82%. In contrast, November sees cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 17°C (64°F), resulting in a chillier average of 9°C (49°F). During this month, precipitation increases to 77 mm (3.0 in) over about 15 days, along with higher humidity at 92%. For more detailed information, check out Ostend weather in November.

May and December offer contrasting weather experiences. In May, temperatures range from a minimum of 6°C (42°F) to a maximum of 24°C (75°F), with an average of 13°C (55°F). This month sees moderate rainfall of 58 mm (2.3 in) over 11 days and a humidity level of 82%. In contrast, December brings cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 13°C (55°F), averaging just 7°C (45°F). The precipitation in December is significantly higher at 129 mm (5.1 in) over 19 days, coupled with a higher humidity of 92%. For more detailed information, visit Ostend weather in December.

Compare Ostend's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Ostend

May in Ostend marks a delightful transition into warmer weather, with temperatures beginning to rise to pleasant averages, creating an inviting atmosphere for both locals and tourists alike. Compared to the chillier months of early spring, the warmth of May often feels like a breath of fresh air, with maximum temperatures reaching into the low 20s °C. While rain remains a possibility, leading to around 11 days of precipitation, this month's humidity peaks at 82%, adding an element of freshness to the coastal breeze. For those keen on exploring the beautiful shores of Ostend, May offers a perfect blend of mild temperatures and vibrant springtime flora. To understand the full scope of weather patterns throughout the year, including May's uniqueness, check out the detailed information on the Ostend Climate.