Climate for Trekking

The Nepal trekking season starts in mid September and extends through to late May.

March to May is Spring, and another ideal time for higher altitude and climbing treks. This is also the most colorful of the seasons, with the hillsides ablaze with blossoming flora.
September to November is Autumn in Nepal and the most popular trekking season. The weather is simply fantastic, and this is the ideal time for climbing trips and higher altitude treks.
December to February is the best months for easier lower altitude treks. Winter nights are cold, but the days are warm, the skies are clear, and there are always fewer people on the trails.

Note: June to August is summer months, and its continues up to mid September making your travel wet and warm. This time are blessed for the keen botanist as the higher valleys and meadows blossom with flowers and lush vegetation. It is recommended to carry insect repellent when you are in trekking during summer months.

Climatological Data for Selected Trekking Areas
First Line: Precipitation {mm (Second Line: Temperature-max/min) º C}

Town
(Altitude M.)

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

Kathmandu (1250m.)

18
19/2

11
21/3

33
25/7

54
28/10

83
30/4

270
29/18

383
28/19

338
28/19

160
27/17

62
27/12

7
23/7

2
20/2

Trishuli
(541m.)

20
22/7

23
25/8

29
30/13

57
33/17

90
33/19

319
33/21

463
32/20

474
32/20

265
31/18

107
30/15

14
27/12

-
23/8

Langtang
(3307)

2/-11

3/-10

8/-6

14/-2

17/2

18/7

19/9

18/8

16/7

15/2

9/-8

Pokhara
(915m.)

26
19/6

25
21/8

50
26/12

87
30/15

292
30/18

569
29/20

809
29/21

75
29/21

581
28/20

224
26/17

9
23/11

1
20/7

Lumle
(1520m.)

28
13/5

45
14/6

52
19/10

194
22/13

318
22/14

902
23/17

15/22
22/17

1339
23/17

932
21/16

294
20/14

23
16/9

2
13/6

Marpha
(2667m.)

14
10/-1

13
12/0

27
1/3

22
18/5

26
19/7

44
21/11

63
21/12

58
21/12

45
20/11

58
17/7

7
14/2

2
12/0

Jomsom
(2713m.)

20
12/-3

18
13/-1

23
16/2

15
20/4

11
23/7

17
25/12

41
25/14

54
25/14

35
23/1

37
19/5

2
15/1

2
13/2

Jumla
(2400m.)

32
11/ -2

40
13/ -3

43
17/ 0

27
22/3

40
24/6

70
24/13

162
23/15

173
24/15

92
23/12

39
24/6

1
19/4

4
15/ -5

Jiri
(2003m,)

18
13/0

20
15/1

47
19/4

71
22/8

139
22/12

381
23/16

599
23/17

605
23/17

337
22/15

93
20/10

15
17/4

3
14/1

Namche Bazaar (3440m.)

26
7/ -8

23
6/ -6

34
9/ -3

26
12/1

41
14/4

140
15/6

243
16/8

165
15/6

78
12/2

9
9/3

39
7/6

Tengboche (3867m.)

13
4/ -9

24
5/ -9

23
9/ -6

25
12/ -4

29
14/ -1

95
14/3

280
15/5

265
14/4

140
13/2

72
12/ -2

9
8/ -7

2
6/ -7

Ilam
(1300m.)

10
160/0

8
18/10

18
23/14

62
25/16

139
25/17

321
25/18

463
25/18

280
25/19

215
25/17

81
25/16

8
25/12

2
18/8