April weather forecast
Kathmandu, Nepal

April brings warmer weather to Kathmandu, with temperatures peaking towards the latter half, at 28.2°C (82.8°F). The days become longer, with increased daylight hours enhancing sightseeing and travelling experiences. The relative humidity remains moderate and the UV index hikes, cautioning travellers to take necessary precautions. The progression from April to May is characterised by darkened skies and increased rainfall frequency. All in all, despite the looming monsoon season, April offers favourable conditions for outdoor ventures.

Temperature

The introduction of April in Kathmandu notes a subtle temperature variation to a still warm 28.2°C (82.8°F) from March's 25.3°C (77.5°F). Against the high April temperatures, Kathmandu records an average drop to a fresh 11.7°C (53.1°F) at night.

Heat index

For April, the heat index is estimated at 29°C (84.2°F). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.
Note that heat index values are valued for light wind and location in the shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.

Humidity

With an average relative humidity of 53%, April is the least humid month.

Rainfall

In Kathmandu, in April, it is raining for 6 days, with typically 61mm (2.4") of accumulated precipitation. In Kathmandu, during the entire year, the rain falls for 110 days and collects up to 1455mm (57.28") of precipitation.

Daylight

In Kathmandu, Nepal, the average length of the day in April is 12h and 50min.
On the first day of April in Kathmandu, sunrise is at 5:53 am and sunset at 6:21 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 6:37 pm +0545.

Sunshine

In Kathmandu, the average sunshine in April is 7.7h.

UV index

The months with the highest UV index are April through August, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an excessive health risk from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 12 during April translates into the following recommendations:
Enforce all necessary precautions, unprotected skin might burn swiftly. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Before heading out, apply sunscreen with 30 SPF or more to avoid sunburn and harmful radiation effects.