Last updated: August 27, 2025
May in Geilo, Norway offers a dynamic blend of weather, where temperatures range from a brisk -12°C (10°F) at night to a pleasant 23°C (73°F) during the day. The average temperature hovers around 5°C (41°F), making it a transitional month that hints at the warmth of summer to come. However, visitors should prepare for moisture, as 63 mm (2.5 inches) of precipitation falls over 11 days, contributing to a humidity level of 85%. This unique combination of cool temperatures and frequent rain creates a refreshing atmosphere, perfect for exploring the stunning landscapes of this alpine paradise.
As winter relinquishes its grip, May in Geilo, Norway emerges with a refreshing transformation, showcasing a significant rise in temperatures. With overnight lows averaging -12°C (10°F) and daytime highs reaching a delightful 23°C (73°F), the month gracefully transitions into spring. The average temperature of 5°C (41°F) indicates a marked improvement from April, and the landscape begins to bloom, inviting outdoor adventures. In stark contrast to the frigid depths of winter, May's conditions foster a unique charm, blending the last remnants of snow with budding flowers and vibrant greenery. This dramatic shift not only enhances the natural beauty but also sets the stage for invigorating activities amidst stunning alpine scenery.
In May, Geilo experiences a noteworthy transition in its precipitation patterns, receiving 63 mm (2.5 in) of rain over 11 days. This amount marks a slight increase from April's 48 mm (1.9 in), reflecting the area's shift towards spring. As nature awakens, these rains support the lush greenery that characterizes the region during this time. May's precipitation levels also hint at an overall upward trend leading into the summer months, with June often seeing a sharper increase. The balance of rainfall and sunny days in May makes it an ideal time for outdoor activities while preparing the landscape for the vibrant summer that follows.
In May, Geilo, Norway, experiences a notable shift in humidity, dropping to 85% from the higher levels typical of the earlier months. This decrease signals the transition towards drier summer conditions, following a gradual decline from 89% in April. As the days grow warmer and sunnier, the relative humidity continues to trend downward, peaking again in the autumn months. The overall pattern highlights how Geilo, while renowned for its wintry charm with consistent high humidity, begins to embrace the freshness of spring and summer, inviting outdoor adventurers to enjoy the crisp, invigorating air.
As spring unfolds in Geilo, Norway, May ushers in a notable shift in UV exposure, with the UV Index climbing to 6, categorizing it as high risk for sunburn, with a reduced burn time of just 25 minutes. This trend indicates a transition from the mild exposures of earlier months—where January and February both registered a low index of 1, and even March remained moderate at 3—to a more cautionary phase as we edge closer to summer. The increase in UV levels in May highlights the importance of sun protection, especially as outdoor activities become more enticing. With the figure peaking at 7 in the following months of June and July, staying informed is key. For detailed information on sun safety, visit Geilo UV Index.
UV Risk Categories
May is a vibrant month in Geilo, Norway, where the sun truly begins to make its presence felt after a long winter. With 411 hours of brilliant sunshine, May marks a significant leap from the previous months, with sunlight hours climbing steadily from just 77 in January to 361 in April. This rise indicates a warming transition, as the days grow longer and brighter, inviting residents and visitors alike to embrace the great outdoors. The sunshine continues to peak into June and July, reaching a glorious 457 hours, but May stands out as the month when nature shakes off its winter cloak and bathes the landscape in a refreshing glow, setting the stage for summer adventures ahead.
In Geilo, Norway, the likelihood of sunny weather in May stands at 31%, which reflects a moderate chance of clear skies as spring unfolds. This percentage is a notable increase from the earlier months, particularly April, where sunshine chances rise dramatically to 52%, marking the transition to warmer days. However, May's chance of sunshine is overshadowed by the more promising summer months, with July offering the highest probability at 42%. While the varying percentages suggest a tendency for brighter conditions as the year progresses, May still holds on to that mix of potential sunshine and lingering spring showers, embodying the richness of Geilo’s unique seasonal beauty.
As spring unfolds in Geilo, Norway, the days grow ever longer, bringing a delightful increase in daylight hours. In May, the sun graces the region for 17 hours each day, a significant jump from 14 hours in April. This trend of expansion continues into June and July, where daylight peaks at an impressive 18 hours, allowing ample time for outdoor adventures and exploration. However, as summer fades into autumn, daylight gradually diminishes, shrinking to 15 hours in August and further decreasing to 12 hours by September. The ebb and flow of daylight throughout the year beautifully showcases the seasonal rhythm of this enchanting locale, where each month offers a unique blend of light and ambiance.
In Geilo, Norway, the month of May typically features a gentle breeze, with an average wind speed of 2.3 m/s (5 mph). This calmness is consistent with the trends observed in the preceding months, where winds have only slightly fluctuated. While March and April enjoyed a brief increase in wind speeds, May reverts to the tranquil levels seen in January and August. Following a seasonal peak in March at 3.3 m/s (7 mph), spring winds settle, creating a serene environment ideal for outdoor activities. This consistent wind pattern paves the way for a peaceful May, as nature awakens and the stunning landscapes of Geilo become even more inviting.
Weather in Geilo varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Geilo, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison to January, May experiences significantly milder weather conditions. While January's temperatures range from a frigid -24°C (-11°F) to a maximum of only 6°C (43°F), May offers a broader spectrum, with minimums of -12°C (10°F) and highs reaching up to 23°C (73°F) on average. Although both months receive a similar amount of precipitation, with May slightly higher at 63 mm (2.5 in) compared to January's 61 mm (2.4 in), the humidity levels vary greatly; January is characterized by an uncomfortable 99% humidity, whereas May has a more pleasant 85%. For more details about January conditions, visit Geilo weather in January.
May and February present a striking contrast in weather conditions. In May, temperatures rise significantly, with a minimum of -12°C (10°F), an average of 5°C (41°F), and a maximum of 23°C (73°F), allowing for milder and more pleasant days. In contrast, February is much colder, featuring a minimum of -25°C (-13°F), an average of -6°C (21°F), and a maximum of just 6°C (43°F). Although both months experience similar levels of precipitation—63 mm (2.5 in) in May compared to 60 mm (2.4 in) in February—February has a slightly higher frequency of rainy days, with precipitation occurring on 12 days versus 11 days in May. The humidity also differs, as February tends to be more humid at 97%, compared to May's 85%. For a detailed look at February's weather, you can visit Geilo weather in February.
In comparing the weather of March and May, it's clear that May is significantly milder. In March, the temperatures range from a minimum of -24°C (-10°F) to a maximum of just 7°C (45°F), with an average temperature of -4°C (25°F). In contrast, May sees a more comfortable range, with temperatures spanning from -12°C (10°F) to a pleasant 23°C (73°F), averaging around 5°C (41°F). Additionally, March experiences slightly more precipitation at 68 mm (2.7 in) over 13 days, compared to May's 63 mm (2.5 in) over 11 days, although humidity is higher in March at 94% versus 85% in May. For a deeper look at March weather in Geilo, you can visit Geilo weather in March.
In comparison to April, May experiences a notable increase in temperature, with average highs reaching 23°C (73°F) compared to April's maximum of 15°C (59°F). While April starts with chillier nights, seeing a minimum of -19°C (-2°F), May's lowest temperature is milder at -12°C (10°F). Additionally, precipitation is slightly higher in May at 63 mm (2.5 in) across 11 days, compared to April's 48 mm (1.9 in) over 9 days, with both months maintaining high humidity levels of around 85% and 89% respectively. For more details on the weather specifics in April, you can refer to Geilo weather in April.
In comparing the weather between May and June, we observe a noticeable warming trend. May experiences a wider temperature range with a minimum of -12°C (10°F) and an average of 5°C (41°F), while June sees temperatures starting at 0°C (32°F) and averaging 11°C (51°F). Both months feature similar maximum temperatures, with May reaching 23°C (73°F) and June slightly higher at 24°C (75°F). Precipitation increases in June to 96 mm (3.8 in) from May's 63 mm (2.5 in), with both months experiencing a similar number of rainy days—11 in May and 13 in June. Humidity remains relatively high, dropping slightly from 85% in May to 82% in June. For detailed insights on the specific weather conditions in June, you can refer to Geilo weather in June.
May and July present a stark contrast in weather, with May experiencing cooler temperatures and a wider range, from a chilly minimum of -12°C (10°F) to a comfortable maximum of 23°C (73°F), averaging around 5°C (41°F). In contrast, July boasts milder temperatures, with a minimum of 0°C (32°F) and a maximum of 26°C (79°F), averaging 12°C (54°F). While May sees 63 mm (2.5 in) of precipitation over 11 days, July has slightly higher rainfall at 85 mm (3.3 in) over 12 days. Humidity remains relatively constant between the two months, with May at 85% and July at 84%. For more detailed information, check out Geilo weather in July.
In May, temperatures in Geilo range from a chilly -12°C (10°F) at night to a pleasant 23°C (73°F) during the day, averaging around 5°C (41°F). This month experiences significant humidity at 85% and sees about 63 mm (2.5 in) of precipitation over approximately 11 days. In contrast, August brings slightly warmer nights, with minimum temperatures at 0°C (33°F), while daytime temperatures can also reach up to 23°C (73°F), averaging 10°C (51°F). However, August is wetter, receiving 93 mm (3.7 in) of rainfall over roughly 14 days, and a slight increase in humidity to 89%. For more detailed information about the weather in August, check out Geilo weather in August.
May and September in Geilo present distinct weather patterns that highlight the transition between spring and autumn. In May, temperatures range from a chilly minimum of -12°C (10°F) to a pleasant maximum of 23°C (73°F), with an average of 5°C (41°F). The month sees moderate precipitation of 63 mm (2.5 in) over about 11 days, accompanied by a humidity level of 85%.
In contrast, September experiences a slight decline in temperatures, with a minimum of -2°C (29°F) and a maximum of 20°C (69°F), averaging 7°C (44°F). This month is notably wetter, with precipitation reaching 115 mm (4.5 in) over 17 days, while humidity increases to 92%. The overall shift from May’s warmth to September’s brisk air reflects the changing seasons in Geilo. For further details, visit Geilo weather in September.
May and October present distinct contrasts in weather conditions. In May, temperatures range from a chilly -12°C (10°F) at night to a pleasant average of 5°C (41°F) and can peak at 23°C (73°F) during the day, accompanied by 63 mm (2.5 in) of precipitation over about 11 days and humidity levels around 85%. In contrast, October sees colder temperatures, with a minimum of -14°C (7°F), an average of 2°C (36°F), and a maximum of only 14°C (57°F). This month experiences more precipitation, totaling 113 mm (4.4 in) across approximately 18 days, and humidity soars to 96%. For a closer look at October weather conditions, you can visit Geilo weather in October.
May and November display significantly different weather characteristics. In May, temperatures range from a minimum of -12°C (10°F) to a maximum of 23°C (73°F), averaging around 5°C (41°F). This month experiences relatively moderate precipitation, with about 63 mm (2.5 in) over 11 days and a humidity level of 85%. In contrast, November features much colder conditions, with temperatures dipping to a minimum of -28°C (-17°F) and peaking at 9°C (48°F), averaging -3°C (28°F). Precipitation increases to 88 mm (3.5 in) across 15 days, and the humidity is notably higher at 97%. For more detailed weather insights, you can check Geilo weather in November.
May and December present vastly different weather profiles. In May, temperatures can range from a brisk -12°C (10°F) at night to a pleasant 23°C (73°F) during the day, with an average of 5°C (41°F). This month typically experiences 63 mm (2.5 in) of precipitation over about 11 days and a humidity level of 85%. In contrast, December is much colder, with minimum temperatures plunging to -22°C (-7°F) and maximums only reaching 6°C (43°F), resulting in an average temperature of -5°C (22°F). This month sees more precipitation, measuring 101 mm (4.0 in) over 17 days, and the humidity is significantly higher at 99%. For a closer look at December weather patterns, you can check Geilo weather in December.
May in Geilo ushers in a refreshing transition from the lingering chill of winter, offering a blend of mild temperatures and an upswing in precipitation. As the mountains gradually shed their snow, the average temperatures begin to rise, creating a vibrant backdrop for outdoor adventures. While humidity remains a notable feature, the increased rainfall over several days fosters a lush, green landscape, marking a stark contrast to the dry, crisp conditions of winter months. For a more in-depth look at how Geilo’s climate evolves throughout the year, be sure to check out Geilo Climate.