Best time to Visit Nepal

Climate
Nepal's climate varies with its topography and altitude. It ranges from the tropical to the arctic. The low-land Terai region with its maximum altitude to approximately 305m, which lies in the tropical southern part of the country, for instance, has a hot and humid climate that can rise above 45 Degree Celsius (113 Degree Fahrenheit) during summer. The mid-land regions are pleasant almost all the year round, although winter nights are cool. The northern mountain region, around an altitude above 3,300m has an alpine climate with considerably lower temperature in winter as can be expected.


Seasons
Nepal has four climatic seasons:

Spring (between March - May): The temperature is mildly warm in low lands while moderate in higher altitudes with plenty of opportunities to have tryst with the mountain views. It is also the time for flowers to blossom and the national flower of Nepal - rhododendron sweeps the ascending altitudes with its magnanimous color and beauty. Some times hazy skies, hot during the day, warm at night, Daytime temperature reach the low to mid 80's F, 28 C. and lows range from about 50° F to 60° F, 10° to 15° C. The Terai plain is very hot at this time, with daytime temperatures are consistently in the 90's F, 32° C. and the low in the mid 70's F, 23° C.


Summer (between June - August): This is Nepal's rainy season, although fascinating for those interested in the flora and fauna of the country. The weather is hot and wet at times. It rains almost everyday with occasional thunderstorms in the evening. Rains usually occur during the night-time leaving the sky clean and clear by the morning making the Himalayan view even more dramatic. Some parts of the Himalayas in Manang, Mustang and Dolpo are in rain-shadow areas; the mountains are high enough to block the clouds.The rain spreads the pleasantness around with lush green vegetation. Daytime temperatures are consistently in the mid to klupper 80's F, 30° C. through out Nepal during these months, with low around 70's F, 21° C.


Autumn (between September - November): This is the best tourist season in Nepal with the summer gone by and the winter to set in. This is the peak season for trekking as mountain views are guaranteed.  This is also the season of festivities as Nepal celebrates the biggest Hindu festivals Dashain followed by Tihar.  The weather is highly pleasant so are the mountain views. Very clear skies, flowers in bloom, hot during the day and cold evenings. Temperatures steadily decrease during these months. October high and low temperatures about 80/55° F, 26/13° C. November highs and lows are about 66/37° F, 19/3° C. In the Terai, October high and low temperatures are 88/72° F, 31/22° C; November high and low temperatures are about 83/72° F, 28/22° C.


Winter (between December - February): The weather is cool and the sky is clear with occasional snowfalls at higher elevations. This season is good for trekking in lower elevations. The morning and night is cold and the days are warm when sunny. Day time highs in the mid 60's F, 18° C. and lows dip into the mid 30's F, 2° C. throughout the country, except for the Terai Plain, where average daily high and low temperatures are about 10° F, 5° C, warmer.

 

Temperature & Rainfall
Nepal is the country of extremes. The low-land plains of the Terai can have tropical temperatures and also the mosquitoes. The Himalayas can get to sub-zero temperatures, but the sun blaze can bring some warmth during the day, even in the mountains. The temperature of Kathmandu goes below 1 Degree Celsius (34 Degree Fahrenheit) in winter and rises to an average of 25 Degree Celsius (77 Degree Fahrenheit) in summer.


The average temperature in Kathmandu during the four seasons:

* Spring season ranges between 16-23 Degree Celsius (61-73 Degree Fahrenheit)

* Summer season ranges between 23-25 Degree Celsius (73-77 Degree Fahrenheit)

* Autumn season ranges between 15-24 Degree Celsius (59-75 DegreeFahrenheit)

* Winter season ranges between 9-12 Degree Celsius (48-54 Degree Fahrenheit)


During the rainy monsoon season between June to August, it rains to an average between 200-375 millimeters in Kathmandu. There is occasional rainfall during the other seasons too. In an average, 1300 millimeters of rain falls in Kathmandu every year.