May weather forecast
Rajbiraj, Nepal

In May, the atmosphere swings towards an increasingly warm and humid climate. With the maximum temperature being 38.3°C (100.9°F), the heat is offset by a generous outpour of 53mm (2.09") rainfall thereby maintaining a blend of sun and showers. Interestingly, the longer hours of sunshine and increased heat mark an extended invitation for beach and watersport enthusiasts. Though the city witnesses a jump in relative humidity, the persistent winds prevent an oppressive heat build-up. As the end of the month nears, the late evenings begin to betray hints of the looming monsoon season.

Temperature

The month of May, characterized by an average high of 38.3°C (100.9°F) and a low of 26.8°C (80.2°F), is recognized as the warmest.

Heat index

In May, the heat index is estimated at a burning hot 49°C (120.2°F). Stay watchful: Heat exhaustion along with heat cramps are likely. Ongoing effort may cause heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. 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. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In Rajbiraj, the average relative humidity in May is 50%.

Rainfall

In Rajbiraj, during May, the rain falls for 13.7 days and regularly aggregates up to 53mm (2.09") of precipitation. In Rajbiraj, during the entire year, the rain falls for 131.9 days and collects up to 787mm (30.98") of precipitation.

Daylight

In Rajbiraj, the average length of the day in May is 13h and 27min.
On the first day of the month, sunrise is at 5:19 am and sunset at 6:30 pm. On the last day of May, sunrise is at 5:04 am and sunset at 6:46 pm +0545.

Sunshine

The months with the most sunshine are April and May, with an average of 11.7h of sunshine.

UV index

The months with the highest UV index are April and May, with an average maximum UV index of 8. A UV Index reading of 8 to 10 represents a very high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 8 in May translates into these instructions:
Act with urgency in protecting yourself. Without it, skin and eyes can be harmed in no time. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.