May weather forecast
Kathmandu, Nepal

With the onset of May, Kathmandu heads towards the peak of its summer and its annual monsoon season. Notably, the temperature hardly falls below 15.7°C (60.3°F), even during the nights, sustaining a warm atmosphere. Rainfall spikes vastly as compared to April, signifying the arrival of the monsoon. As the month progresses, expect more overcast days and an increase in humidity. Although frequent downpours might hinder outdoor activities, this season showcases Kathmandu's vibrant green scenery.

Temperature

With the start of May, Kathmandu measures an average high-temperature of a still warm 28.7°C (83.7°F), not significantly differing from April's 28.2°C (82.8°F). May's nights exhibit a sharp contrast from day highs, with an average temperature of 15.7°C (60.3°F).

Heat index

In May, the average heat index is estimated at a hot 30°C (86°F). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.
When referencing the heat index, its values are suitable for shady environments and light breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

The average relative humidity in May in Kathmandu is 57%.

Rainfall

In May, the rain falls for 12 days. Throughout May, 124mm (4.88") of precipitation is accumulated. In Kathmandu, Nepal, during the entire year, the rain falls for 110 days and collects up to 1455mm (57.28") of precipitation.

Daylight

In Kathmandu, the average length of the day in May is 13h and 31min.
On the first day of the month, sunrise is at 5:23 am and sunset at 6:37 pm. On the last day of May, sunrise is at 5:08 am and sunset at 6:54 pm +0545.

Sunshine

In Kathmandu, Nepal, the average sunshine in May is 7.4h.

UV index

The months with the highest UV index are April through August, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an excessive health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, the UV index of 12 transforms into the following advice:
Implement all necessary safeguards, unprotected skin might suffer burns rapidly. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Prolonged stay under the direct sun should be avoided as much as possible, especially if a person burns easily. Sunscreen with a minimum 30 sun protection factor should always be used.