May Weather in Ilam, Nepal

Last updated: August 31, 2025

May in Ilam, Nepal, is a month of vibrant weather patterns, characterized by a maximum temperature reaching 29°C (84°F) and an average temperature of 20°C (68°F). With minimum temperatures dipping to 12°C (53°F), this tranquil setting experiences a significant humidity level of 60%, enhancing the lushness of the landscape. However, it’s important to note the impact of precipitation, as Ilam records an impressive 299 mm (11.8 in) of rain over 29 days, making May a month of lush greenery and rejuvenating rain. This combination of warmth and moisture creates a uniquely rich atmosphere that is both inviting and refreshing.

May Temperature in Ilam

In May, Ilam, Nepal begins to embrace the warmth of early summer, showcasing a noticeable rise in temperatures. With minimums around 12°C (53°F) and an average temperature of 20°C (68°F), the days become increasingly pleasant, making outdoor activities more enjoyable. The maximums peak at 29°C (84°F), offering a taste of summer heat without reaching the extremes of the upcoming months. Compared to the cooler spring months, May marks a significant transition, as both daytime warmth and overall averages elevate, inviting visitors and locals alike to savor the region's natural beauty in lush, green landscapes. This trend paves the way for the balmy conditions of June, highlighting May's role as a bridge to the more intense warmth of summer.

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

The chart illustrates May temperature patterns in Ilam, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ilam, 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).
JanFebMarAprMayJunJulAugSepOctNovDec485259646771727271665851
Data source: Temperature data for Ilam 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 Ilam

May in Ilam, Nepal, marks a significant transition as precipitation reaches its peak for the month, totaling 299 mm (11.8 in) over 29 days. This marks a noticeable increase from April's 210 mm, reflecting the onset of the monsoon season that is characterized by frequent showers. The gradual rise in rainfall from the earlier months, such as 142 mm in March and 64 mm in February, showcases a clear upward trend leading into this wet period. As May progresses into the monsoon, the region is set to experience even heavier rainfall in June, foreshadowing the climatic shifts that play a crucial role in the local ecosystem and agriculture.

May Precipitation Trends in Ilam

The chart displays monthly precipitation patterns in Ilam, 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 Ilam, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec27641422102995119406053751802018
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Ilam

May in Ilam, Nepal, brings a noticeable uptick in humidity, soaring to 60%. This figure stands in contrast to the beautiful, drier months of March and April, where humidity dipped to 38% and 34%, respectively. As spring transitions into summer, the air becomes gradually more saturated, setting the stage for the upcoming monsoon season. June witnesses a dramatic rise, escalating to 83%, and by July and August, humidity peaks at a sweltering 93%. This trend underscores the region's shift from the refreshing, relatively dry conditions of early spring to the intense, moisture-laden air prevalent in the summer months.

May Average Humidity in Ilam

This chart illustrates the average monthly humidity levels in Ilam, 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 Ilam is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%61%38%34%60%83%93%93%93%88%80%75%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Ilam

In May, Ilam, Nepal, experiences a significant peak in UV radiation, with the UV Index soaring to 12, categorizing it as extreme and resulting in a burn time of just 10 minutes. This trend of increasing UV exposure is consistent as the months progress; starting from a high of 6 in January and climbing steadily to 11 in April, May marks a critical turning point as the sun's intensity reaches its peak. The subsequent months see even higher figures, with June and July hitting 14 and 15, respectively, emphasizing the importance of sun protection during this time. Staying informed about the UV Index is essential for outdoor activities, making resources like Ilam UV Index invaluable for residents and visitors alike.

Maximum UV Index Levels in Ilam for May

The chart shows the monthly maximum UV Index (UVI) for Ilam 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 Ilam typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6791112141514121086
Data source: Ilam 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 Ilam

May shines brightly in Ilam, Nepal, with an impressive 337 hours of sunshine, marking it as one of the sunniest months of the year. As spring descends, the daylight hours steadily increase from January’s 237 hours, culminating in a peak that reflects the region’s vibrant, blossoming nature. Following a consistent rise from 271 hours in February to 325 hours in April, May’s radiant days create the perfect backdrop for outdoor adventures and exploration. However, as summer approaches, June sees a slight decrease to 310 hours, indicating that while the sun remains generous, the rhythm of the seasons brings a mix of patterns. This trend of sunshine hours highlights Ilam's dynamic climate, making May a particularly enchanting time to bask in the warmth and beauty of the landscape.

Monthly Sunshine Duration in Ilam: May Highlighted

The May sunshine duration represents the total number of hours Ilam 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.
JanFebMarAprMayJunJulAugSepOctNovDec237h271h321h325h337h310h216h239h261h321h293h291h
Data source: Ilam May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ilam During May

As May approaches in Ilam, Nepal, the likelihood of sunny weather takes a noticeable dip, with only 22% chance of sunshine. This trend marks a significant decrease from the preceding months, where sunny days in January, February, March, and April hover around the mid-50s to mid-60s percent. Following the vibrant spring, the region transitions into a much gloomier June with just 13% expected sunlight. Thus, May stands out as a crucial turning point, heralding a decline in sunny weather that continues into the summer months. It’s a reminder for residents and travelers alike to enjoy the clear skies while they last, as the lush landscapes of Ilam prepare for the upcoming monsoon season.

Percentage of Sunny Days in May in Ilam

The chart illustrates the percentage of sunny days in Ilam 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 Ilam experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec56%66%58%65%22%13%4%3%23%48%66%67%
Data source: Ilam May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ilam in May

In Ilam, Nepal, daylight duration showcases a beautiful rhythm throughout the year. Starting with 10 hours in January, the days gradually lengthen, reaching a peak of 13 hours from May through August. This consistent influx of light brings vitality to the region, encouraging outdoor activities and cultural celebrations. As summer fades, daylight wanes once again, tapering back to 12 hours in September and returning to 10 hours by December. This cyclical pattern not only highlights the changing seasons but also reflects the natural ebb and flow of life in this vibrant locale.

Average Daylight Hours in Ilam for May

The chart illustrates the variation in daylight duration in Ilam throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 38m11h 14m12h12h 47m13h 27m13h 47m13h 37m13h 2m12h 17m11h 29m10h 48m10h 27m
Data source: Ilam daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Ilam

In Ilam, Nepal, the month of May experiences a consistent average wind speed of 1.2 m/s (3 mph), mirroring the briskness of the previous months, January through April. This moderate breeze contributes to the pleasant atmosphere as spring transitions into summer, fostering a sense of tranquility in the region. Following May, wind speeds begin a gradual decline, tapering to 1.1 m/s (2 mph) in June and further softening to 1.0 m/s during the peak summer months of July and August. This reflects a trend of diminishing wind throughout the warmer season, creating a serene backdrop that complements Ilam's lush, verdant landscapes. The gentle winds in May not only enhance the region's beauty but also invite visitors to immerse themselves in its natural charm.

Average May Wind Speed in Ilam

The chart displays monthly wind speed patterns in Ilam, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.21.21.31.41.2 m/s1.11.01.01.01.11.11.1
Data source: Ilam May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Ilam Compares to Other Months

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

In comparison, May offers significantly warmer temperatures, with average highs around 20°C (68°F) and peaks reaching up to 29°C (84°F), while January's average temperature hovers at a cooler 9°C (49°F), with maximums of 22°C (71°F). Precipitation patterns also differ notably; May experiences substantial rainfall, totaling 299 mm (11.8 in) over 29 days, whereas January sees a mere 27 mm (1.1 in) spread across just 7 days. Additionally, the humidity levels are quite similar, with May at 60% and January slightly lower at 59%. For more details on January weather, visit Ilam weather in January.

In comparing the weather between May and February, there is a stark contrast in temperatures and precipitation levels. May enjoys significantly warmer conditions, with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 29°C (84°F), whereas February remains quite cool, with averages between -1°C (31°F) and 22°C (73°F). Additionally, May experiences far more precipitation, totaling 299 mm (11.8 in) over 29 days, compared to February's 64 mm (2.5 in) across just 13 days. Interestingly, humidity levels are quite similar in both months, around 60% in May and 61% in February. For more detailed information on February weather, you can visit Ilam weather in February.

In comparing the weather between March and May, we see notable differences in temperatures and precipitation patterns. May boasts warmer temperatures, with a minimum of 12°C (53°F) and an average of 20°C (68°F), while March starts cooler with a minimum of 2°C (37°F) and an average of 15°C (59°F). Maximum temperatures are similar, reaching 27°C (82°F) in March and peaking at 29°C (84°F) in May. Precipitation levels also vary significantly, with May receiving much more rain at 299 mm (11.8 in) over 29 days, compared to March's 142 mm (5.6 in) over 20 days. Additionally, humidity is higher in May at 60%, while March’s humidity sits at a lower 38%. For more insights on March weather, you can check Ilam weather in March.

In comparing the weather between April and May, it's evident that May experiences warmer temperatures overall, with an average of 20°C (68°F) compared to April's 18°C (64°F). The minimum temperature in May is also higher, starting at 12°C (53°F), while April's minimum is 8°C (46°F). However, May is notably wetter, receiving 299 mm (11.8 in) of precipitation over 29 days, compared to April's 210 mm (8.3 in) over 24 days. Furthermore, the humidity in May is significantly higher at 60% compared to April's 34%. For more insights into April's weather, you can check Ilam weather in April.

May and June exhibit noticeable differences in weather characteristics. In May, temperatures range from a minimum of 12°C (53°F) to a maximum of 29°C (84°F), with an average of 20°C (68°F). The month sees significant precipitation of 299 mm (11.8 in) over 29 days, coupled with a humidity level of 60%. In contrast, June tends to be warmer, with temperatures starting at a minimum of 16°C (61°F) and averaging 22°C (72°F), while still peaking at 29°C (84°F). However, June experiences higher precipitation at 511 mm (20.1 in), also spread across 29 days, and a marked increase in humidity to 83%. For more detailed information on June weather, visit Ilam weather in June.

In May, temperatures tend to be milder, with an average of 20°C (68°F), while July experiences warmer conditions with a similar average of 22°C (72°F). However, July is characterized by significantly higher humidity at 93%, compared to May's 60%, creating a more oppressive atmosphere. Precipitation also increases dramatically in July, with 940 mm (37.0 in) of rain over 30 days, compared to May's 299 mm (11.8 in) over 29 days. This substantial rainfall in July contributes to a lush landscape but may lead to challenging weather conditions. For more details on July's weather, you can refer to Ilam weather in July.

In May, the weather features a mild average temperature of 20°C (68°F), with maximum highs reaching 29°C (84°F) and cooler nights dropping to a minimum of 12°C (53°F). However, this month also sees considerable precipitation, with 299 mm (11.8 in) spread over 29 days, leading to a humidity level of around 60%.

Contrastingly, August brings warmer temperatures, with an average of 22°C (73°F) and maximums peaking at 30°C (86°F), while the minimum temperature is noticeably higher at 19°C (66°F). However, August is significantly wetter, with a staggering 605 mm (23.8 in) of rain across 31 days, resulting in much higher humidity levels of 93%. For a closer look at the specific conditions in August, you can check Ilam weather in August.

May and September exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 12°C (53°F) to a maximum of 29°C (84°F), with an average of 20°C (68°F). However, the month is characterized by significant rainfall, totaling 299 mm (11.8 in) over 29 days, coupled with a humidity level of 60%. In contrast, September sees slightly warmer conditions with a minimum of 16°C (62°F) and an average of 21°C (71°F), peaking at 29°C (85°F). The precipitation increases to 375 mm (14.8 in), occurring on 28 days, and the humidity rises significantly to 93%. For a more detailed look at September conditions specifically, you can visit Ilam weather in September.

May and October exhibit notable contrasts in weather patterns. In May, temperatures range from a minimum of 12°C (53°F) to a maximum of 29°C (84°F), with an average of 20°C (68°F). The month experiences significant rainfall, totaling 299 mm (11.8 in) across 29 days, accompanied by a moderate humidity level of 60%. In contrast, October sees slightly cooler temperatures, with a minimum of 9°C (48°F) and a maximum of 28°C (83°F), leading to an average of 19°C (66°F). While precipitation decreases to 180 mm (7.1 in) over 20 days, humidity rises to a higher 88%. For more details, you can check Ilam weather in October.

In May, the weather is significantly warmer, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 29°C (84°F) and an average of 20°C (68°F). This month also experiences considerable rainfall, with a total of 299 mm (11.8 in) spread over 29 days, leading to a moderate humidity level of 60%. In contrast, November brings cooler temperatures, with a minimum of 5°C (42°F), an average of 14°C (58°F), and a maximum of 26°C (79°F). The precipitation in November is minimal, totaling only 19 mm (0.8 in) across just 5 days, but the humidity climbs to 80%. For more detailed insights, you can visit Ilam weather in November.

May and December exhibit stark differences in weather patterns. In May, temperatures range from a minimum of 12°C (53°F) to a maximum of 29°C (84°F), with an average of 20°C (68°F). This month experiences significant rainfall, totaling 299 mm (11.8 in) over 29 days, resulting in a humidity level of 60%. In contrast, December sees much cooler temperatures, with a minimum of 1°C (35°F) and a maximum of 22°C (72°F), averaging around 11°C (51°F). Additionally, precipitation drops dramatically to just 18 mm (0.7 in) over only 3 days, accompanied by higher humidity levels at 75%. For more detailed information, you can check Ilam weather in December.

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Conclusion: What to Expect From May Weather in Ilam

In May, Ilam experiences a shift towards warmer weather, with average temperatures rising significantly compared to earlier months. The maximum temperature reaches a comfortable 29°C (84°F), making outdoor activities more inviting. However, this warmth comes alongside increased humidity and a notable uptick in precipitation, with May being one of the wetter months, featuring rain on nearly every day. This blend of warmth and moisture creates a lush, vibrant landscape, setting May apart as a transitional month from the cooler, drier spring into the summer season. For a deeper understanding of Ilam's complete climate patterns, visit Ilam Climate.