Climate

Winter: (December - February)

Feature: Cold in the morning but sunny and pleasantly warm in the day with clear blue sky. Excellent season for a general Nepal tour, but it can be quite cold during treks to Nepal Himalayas and even snow in areas of high altitude treks.

Spring: (March - May)

Feature: Cool throughout the day. Excellent season for trekking too. A great season for colorful flowers and birds.

Summer: (June - August)

Features: Gets warm in the daytime and monsoon rain starts from mid July till August. The monsoon rain help to cool the city during summer and the wet climate compensates for the beautiful greenery all around.

Autumn: (September - November)

Features: Cool breeze keeps the country cool throughout the day. Post monsoon rains could last till late September. Probable the best season to visit Nepal for a general tour or even for a trek or rafting tour.

In general the most preferred time for traveling in Nepal is from mid-September - right after the monsoon all the way through April. This does not mean that May through September is the wrong time to visit Nepal. During these seasons the beautiful scenery is further enhances by the greenery all around and Nepal also provides an ideal gate way to Tibet where these months are the most preferred time to travel there.

The trekking season in Nepal depends upon the monsoon season, which begins in mid-June and extends until mid-September. Thus, October through May are the best months for planning a trek. Autumn is noted for blue skies and clear views of the mountains and is considered to be the best season for trekking.

Though January and February are extremely cold at higher elevations where there is also occasional snowfall, those who are well equipped or who remain at elevations below 3,000 meters. Late February marks the beginning of spring in Nepal with the hillsides covered with wild flowers and spectacular displays of rhododendrons above 1,800 meters. Trekking in the months of February and March are especially interesting to those fond of flowers and nature.

Season	Condition	Precipitation	Temp - Low	Temp - High
Mar-May	Cool and pleasant	0-5" (0-125mm)	44-65F (6-16C)	75-86F (21-27C)
June-Aug	Wet and humid. Monsoon rains	10-15" (250-375mm)	45-65F (6-16C)	82-84F (25-26C)
Sept-Nov	Cool and pleasant	0-5" (0-125mm)	65-45F (16-6C)	84-65F (26-16C)
Dec-Feb	Chilly morning and nights, Warm afternoons	0-1" (0-25mm)	32-34F (0-1C)	67-65F (18-16C)

This is the expedition season and the best time for climbing the high peaks. At higher elevations over 5,000 meters the mountain views are excellent and the temperature remains quite moderate even at night. The high valleys north of the mountain ranges remain dry even during the summer rains and are a delightful destination with the pastures full of cattle and alpine flowers. Some of these trans-Himalayan areas can be reached by air, thus avoiding a long journey during the rainy season.