May Weather in Biratnagar, Nepal

Last updated: August 31, 2025

In Biratnagar, Nepal, May brings a blend of heat and humidity, with daytime temperatures peaking at a scorching 40°C (104°F) and averaging around 29°C (84°F). Evenings offer a brief respite, as the minimum temperature hovers at 21°C (70°F). This month also sees significant rainfall, with 110 mm (4.3 in) of precipitation spread across 19 days, contributing to a humidity level of 46%. Residents and visitors alike are encouraged to prepare for both the sweltering heat and the frequent showers that characterize this dynamic month in Biratnagar.

May Temperature in Biratnagar

In Biratnagar, May ushers in the summer heat, with temperatures noticeably rising compared to the preceding months. The month starts with a minimum of 21°C (70°F) and averages around 29°C (84°F), making it a comfortable time for outdoor activities. However, daytime temperatures can climb to a peak of 40°C (104°F), reflecting a significant leap from April’s already warm range. As May transitions to June, the heat continues to intensify, with minimum temperatures rising further. This pattern not only emphasizes the warming trend but also sets the stage for the sultry monsoon season that follows. Overall, May in Biratnagar marks a vibrant, albeit hot, period filled with energetic summer vibes.

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

The chart illustrates May temperature patterns in Biratnagar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Biratnagar, 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).
JanFebMarAprMayJunJulAugSepOctNovDec616777828486858584807264
Data source: Temperature data for Biratnagar 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 Biratnagar

May marks a significant turning point in Biratnagar's climate, as the city experiences a dramatic increase in precipitation. With 110 mm (4.3 in) of rain falling over 19 days, May sets the stage for the upcoming monsoon season. This surge juxtaposes sharply with earlier months, where precipitation was sparse, peaking at just 48 mm (1.9 in) in April. The gradual ramp-up in rainfall reflects a vital transition, leading into June, which sees an astounding 308 mm (12.1 in) and further intensifies with July's record 440 mm (17.3 in). This pattern underscores the seasonal shift from dry to wet, establishing May as a critical month for understanding Biratnagar's climatic rhythms. As the rain-soaked landscape flourishes, the city's transformation is both palpable and profound.

May Precipitation Trends in Biratnagar

The chart displays monthly precipitation patterns in Biratnagar, 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 Biratnagar, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec41917481103084403672568305
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Biratnagar

As spring transitions to summer in Biratnagar, Nepal, May witnesses a notable increase in humidity, reaching 46%. This increase follows a pattern where the months leading up to May show a steady decline in humidity, peaking at a low of 25% in April. However, as the region approaches the monsoon season, the air becomes noticeably more humid, setting the stage for the drastic rise that follows in June, with humidity soaring to 77%. This trend highlights Biratnagar’s shift from drier, cooler air in the earlier months to a more humid climate as summer unfolds, creating a dynamic atmosphere that prepares the city for the intense rains of the upcoming months.

May Average Humidity in Biratnagar

This chart illustrates the average monthly humidity levels in Biratnagar, 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 Biratnagar is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec58%53%32%25%46%77%92%92%92%87%76%71%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Biratnagar

As the days grow warmer in May, Biratnagar experiences a dramatic spike in its UV Index, reaching a peak of 10 categorized as very high. This signifies a significant shift from the moderate levels of January and the high index in February. From March onwards, the intensity steadily increases, culminating in May's 15-minute burn time, a clear indication that sun protection becomes essential during this month. Following May, the UV Index only continues to rise to extreme levels in June and July, urging residents and visitors alike to take necessary precautions as the sunny season unfolds. For more detailed insights, check the Biratnagar UV Index.

Maximum UV Index Levels in Biratnagar for May

The chart shows the monthly maximum UV Index (UVI) for Biratnagar 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 Biratnagar typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec56891011131212975
Data source: Biratnagar 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 Biratnagar

As May arrives in Biratnagar, Nepal, sunlight bathes the city with an impressive 339 hours of brightness, marking it as one of the sunniest months of the year. Leading into summer, the trend of increasing daylight is evident as hours of sunshine have progressively risen since January, which started with 237 hours. This upward trajectory continues through April, culminating in May’s vibrant sunshine, just before the monsoon season begins in June with a slight dip to 314 hours. Following a peak in May, the summer months show a varied pattern with July experiencing the lowest sunshine at 247 hours. This seasonal rhythm underscores May as a radiant period, paving the way for a lush and lively landscape ahead.

Monthly Sunshine Duration in Biratnagar: May Highlighted

The May sunshine duration represents the total number of hours Biratnagar 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.
JanFebMarAprMayJunJulAugSepOctNovDec237h278h332h334h339h314h247h275h273h303h289h284h
Data source: Biratnagar May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Biratnagar During May

In Biratnagar, Nepal, the likelihood of enjoying sunny weather exhibits a significant decline as spring transitions into summer. While the sun shines brightly in earlier months—boasting a sunny probability of 77% in January, 87% in February, and 85% in March—this cheerful trend reverses in May, where the chance of sunny days plummets to a mere 38%. This downward shift continues into the subsequent months, dwindling to 27% in June and a stark 8% in July, as monsoon season approaches. With sunny weather gradually waning, particularly in the heart of summer, those looking to bask in the sun should plan their visits to Biratnagar accordingly.

Percentage of Sunny Days in May in Biratnagar

The chart illustrates the percentage of sunny days in Biratnagar 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 Biratnagar experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec77%87%85%77%38%27%8%4%29%64%85%75%
Data source: Biratnagar May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Biratnagar in May

In Biratnagar, Nepal, the daylight duration exhibits a fascinating seasonal rhythm throughout the year. Starting with 10 hours in January, daylight gradually increases, reaching its peak of 13 hours consistently from May to August. This generous sunlight enhances the vitality of spring and summer, making these months particularly vibrant. As the year progresses, daylight begins to taper off, descending back to 12 hours in September, then fading to 11 hours in October, before returning to 10 hours in both November and December. This cyclical pattern not only shapes the local climate but also influences the lifestyle and activities of the community, illustrating nature's beautiful ebb and flow.

Average Daylight Hours in Biratnagar for May

The chart illustrates the variation in daylight duration in Biratnagar throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 40m11h 14m12h12h 47m13h 26m13h 45m13h 35m13h 1m12h 16m11h 30m10h 50m10h 29m
Data source: Biratnagar daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Biratnagar

In Biratnagar, Nepal, the month of May showcases a gentle transition in wind patterns, with an average wind speed of 2.6 m/s (approximately 6 mph). This slight dip from April's peak of 2.8 m/s signals a moderation as the year progresses. Notably, as the warmer months approach, wind speeds reach a temporary high in June, suggesting a dynamic interplay between temperature and wind currents. Following May, the wind speed again stabilizes to the same average in July, hinting at a consistent breeziness during this time of year. Overall, May offers a pleasant start to the summer winds, making it an inviting period for outdoor activities in this vibrant city.

Average May Wind Speed in Biratnagar

The chart displays monthly wind speed patterns in Biratnagar, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.72.42.82.6 m/s2.92.62.12.31.91.51.8
Data source: Biratnagar May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Biratnagar Compares to Other Months

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

The weather in May is considerably warmer and more humid compared to January. In May, temperatures soar from a minimum of 21°C (70°F) to a scorching maximum of 40°C (104°F), with an average of 29°C (84°F). This month also experiences significant precipitation, averaging 110 mm (4.3 in) over about 19 days. In contrast, January presents much cooler conditions, with temperatures ranging from a chilly 6°C (44°F) to a pleasant maximum of 29°C (85°F) and an average of 16°C (61°F). Rainfall is minimal during January, with only 4 mm (0.2 in) recorded over just one day. The humidity in January is also higher, at 58%, compared to May's 46%. For more details on January's climate, you can check Biratnagar weather in January.

May and February present starkly contrasting weather conditions. In May, temperatures soar, with a minimum of 21°C (70°F) and average highs reaching up to 29°C (84°F), occasionally peaking at an impressive 40°C (104°F). This month is also characterized by significant rainfall, accumulating to 110 mm (4.3 in) across 19 days, along with a relatively lower humidity level of 46%. In contrast, February offers a much cooler climate, featuring temperatures that range from a minimum of 8°C (46°F) to an average of 19°C (67°F), and maximums capping at 31°C (88°F). Precipitation is minimal in February, with just 19 mm (0.7 in) recorded over a single day, while humidity is slightly higher at 53%. For more specifics on February weather, you can check Biratnagar weather in February.

In comparing the weather between March and May, it’s clear that May is significantly warmer and wetter. May experiences a minimum temperature of 21°C (70°F) and can soar to a maximum of 40°C (104°F), with an average of 29°C (84°F). In contrast, March's temperatures start much cooler, ranging from a minimum of 11°C (51°F) to a maximum of 37°C (99°F), with an average of 25°C (77°F). Additionally, May brings much more precipitation, with 110 mm (4.3 in) occurring over 19 days, whereas March only sees 17 mm (0.7 in) over just 3 days. Humidity levels also differ, with May averaging 46%, compared to March's lower 32%. For further details, you can check Biratnagar weather in March.

Comparing the weather in May and April reveals some notable differences. In May, temperatures range from a minimum of 21°C (70°F) to a maximum of 40°C (104°F), with an average temperature of 29°C (84°F). This month also experiences significantly higher precipitation, totaling 110 mm (4.3 in) over 19 days, resulting in a humidity level of 46%. In contrast, April has slightly cooler temperatures, with a minimum of 17°C (62°F) and a maximum reaching 41°C (106°F), while the average temperature is 28°C (83°F). Rainfall is much lower in April, at only 48 mm (1.9 in) across 8 days, contributing to a lower humidity of 25%. For more specific insights, you can explore the Biratnagar weather in April.

In May, temperatures in Biratnagar range from a minimum of 21°C (70°F) to a maximum of 40°C (104°F), with an average temperature of 29°C (84°F). The month sees 110 mm (4.3 inches) of precipitation over 19 days, leading to a relatively dry atmosphere with humidity at 46%. In contrast, June experiences slightly warmer temperatures, with a minimum of 23°C (74°F) and an average of 30°C (86°F), though the maximum drops to 38°C (102°F). However, June is significantly wetter, with precipitation totaling 308 mm (12.1 inches) over 26 days, resulting in higher humidity levels at 77%. For more detailed insights, check Biratnagar weather in June.

In May, the weather is characterized by warm temperatures, with a minimum of 21°C (70°F) and an average of 29°C (84°F), though it can reach highs of 40°C (104°F). The month sees moderate precipitation at 110 mm (4.3 in) over 19 days, accompanied by a humidity level of 46%. In contrast, July experiences slightly higher minimum temperatures, starting at 24°C (75°F), with an average of 29°C (85°F) and a maximum of 38°C (100°F). However, it is also significantly wetter, with total precipitation reaching 440 mm (17.3 in) across 29 days and an increased humidity of 92%. For more details on July weather, you can check Biratnagar weather in July.

When comparing the weather in May and August, we see notable differences in both temperature and precipitation patterns. In May, the temperatures range from a minimum of 21°C (70°F) to a maximum of 40°C (104°F), with an average temperature of 29°C (84°F). The month experiences 110 mm (4.3 in) of rainfall over 19 days and has a relatively lower humidity of 46%. In contrast, August sees slightly warmer conditions with minimum temperatures of 25°C (77°F) and maximums of 38°C (101°F), averaging around 30°C (85°F). However, August is characterized by significantly higher precipitation levels, totaling 367 mm (14.4 in) across 29 days, and much increased humidity at 92%. This shift in weather highlights the transition from a warm and moderately rainy May to a more humid and wet August. For more detailed insights, you can check Biratnagar weather in August.

May and September in Biratnagar present notable contrasts in weather conditions. May features warm temperatures with a minimum of 21°C (70°F) and a maximum of 40°C (104°F), while September maintains a slightly higher minimum at 22°C (73°F) and a lower maximum of 37°C (98°F). Additionally, May experiences relatively less precipitation, totaling 110 mm (4.3 in) over 19 days, compared to September's significantly higher rainfall of 255 mm (10.1 in) over 25 days. The humidity also varies greatly, with May at 46% and September soaring to 92%, making September feel much more humid and damp. For more detailed information, you can visit Biratnagar weather in September.

In May, temperatures in the region can soar, with a minimum of 21°C (70°F) and a maximum reaching up to 40°C (104°F), making it the warmer month of the two. The average temperature is around 29°C (84°F), accompanied by significantly lower humidity at 46% compared to October. May also experiences higher precipitation, totaling 110 mm (4.3 in) across 19 days, which can contribute to an occasional muggy feel.

In contrast, October presents a more moderate climate with a minimum temperature of 16°C (61°F) and a maximum of 36°C (98°F). The average temperature sits at 27°C (81°F), but the humidity skyrockets to 87%, giving the air a heavier quality. Rainfall is also less in October, with 83 mm (3.3 in) spread over just 9 days. For more detailed insights on October weather, you can refer to Biratnagar weather in October.

May and November present stark contrasts in weather. In May, temperatures soar with a minimum of 21°C (70°F) and an average high of 29°C (84°F), reaching as high as 40°C (104°F). This month also sees significant rainfall, with 110 mm (4.3 in) of precipitation spread over 19 days, and humidity levels hovering around 46%. In contrast, November brings much cooler conditions, with temperatures ranging from a minimum of 11°C (53°F) to an average of 22°C (72°F) and a maximum of 36°C (96°F). Remarkably, November sees no precipitation, recording 0 mm (0.0 in) over 0 days, and higher humidity at 76%. For more detailed information about November weather, visit Biratnagar weather in November.

May and December present contrasting weather conditions in terms of temperature and precipitation. In May, temperatures soar with a minimum of 21°C (70°F) and an average of 29°C (84°F), peaking at a sweltering 40°C (104°F). The month also experiences significant rainfall, with about 110 mm (4.3 in) of precipitation over 19 days and a humidity level of 46%. In sharp contrast, December brings a cooler climate where temperatures drop to a minimum of 7°C (44°F), average around 18°C (64°F), and reach a maximum of 30°C (87°F). Notably, December enjoys dry weather with only 5 mm (0.2 in) of precipitation across no rainy days and higher humidity of 71%. For more details on December weather, visit Biratnagar weather in December.

Compare Biratnagar's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Biratnagar

As May unfolds in Biratnagar, the weather undergoes a notable transformation, characterized by rising temperatures and increased humidity. With daytime highs reaching up to 40°C (104°F), the heat becomes more pronounced compared to the milder conditions experienced in previous months. Additionally, May sees a spike in precipitation, with rain making its presence felt on nearly 19 days, leading to a significant uptick in humidity levels. This shift not only brings about a vibrant atmosphere but also sets the stage for the monsoon season ahead. For a deeper understanding of the weather patterns throughout the year, explore Biratnagar Climate.