Climate
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The climate of Bhutan varies widely depending on elevation. Southern Bhutan is warmer compared to other parts of Bhutan. The central Valleys, Punakha, Wangdue Phodrang, Monger, Trashigang, Trongsa, and Lhuntse have a semi – tropical climate with cool winters. Whereas, place like Haa, Paro, Thimphu, Trashiyantse & Bumthang, have a colder climatic condition with some of these places covered with light snow. Only in the high Himalayan region (Northern part of the country) does the snow remain year around. During the monsoon season heavy rainfalls almost every night and a raincoat or an umbrella is highly recommended.

Winter in Bhutan (mid-November till mid-March) is dry and sunny for the most part with daytime temperatures of 16Co -18Co. The spring season (mid March to mid June) offers warmer temperatures gradually warming to 27Co-29Co. The monsoon usually arrives in mid-June, with light rain falling mainly in the afternoons and evenings. At the end of September, after the last of the big rains, autumn suddenly arrives and is a magnificent season for trekking until November.

Average Temperature (in Celsius)

Month

*C

Paro

Thimpu

Punakha

Wangdue

Trongsa

Bumthang

Mongar

Tashigang

January

Max

9.4

12.3

16.1

17.0

13.0

10.8

15.5

20.4

Min

-5.8

-2.6

4.2

4.3

-2.0

-5.1

8.2

10.5

February

Max

13.4

14.4

19.6

19.0

13.9

10.0

15.9

21.7

Min

1.5

0.6

5.3

7.8

0.4

-1.4

8.3

11.5

March

Max

14.5

16.4

21.12

22.8

16.7

16.2

20.0

24.8

Min

0.6

3.9

9.2

2.4

4.4

3.5

11.6

14.4

April

Max

17.6

20.0

24.4

26.2

20.1

18.7

22.8

28.3

Min

4.6

7.1

11.2

12.9

6.6

3.9

14.0

17.0

May

Max

23.5

22.5

27.2

29.1

21.0

21.3

25.1

30.1

Min

10.6

13.1

14.8

17.7

11.6

9.5

17.4

20.6

June

Max

25.4

24.4

31.2

29.2

22.2

22.5

26.1

30.7

Min

14.1

15.2

19.5

20.1

13.6

3.5

19.5

22.6

July

Max

26.8

18.91

32.0

18.2

25.3

14.1

16.1

31.5

Min

14.9

3.4

21.6

16.2

15.3

10.9

15.8

23.1

August

Max

25.3

25.0

31.4

29.1

23.8

23.0

25.4

30.2

Min

14.7

15.8

19.8

20.0

15.0

13.7

19.6

22.7

September

Max

23.4

23.1

29.9

27.5

22.6

21.6

24.7

30.0

Min

11.7

15.0

20.4

19.1

14.2

12.1

19.4

23.9

October

Max

18.7

21.9

27.8

26.1

21.8

19.5

22.7

29.1

Min

7.4

10.4

18.9

14.7

11.7

5.9

15.8

17.7

November

Max

13.9

17.9

22.3

22.6

19.8

16.1

19.9

26.1

Min

1.4

5.0

13.0

9.6

6.4

-0.5

11.2

13.6

December

Max

11.2

14.5

15.0

19.1

18.2

12.3

15.7

23.0

Min

-1.7

-1.1

7.9

6.3

2.5

-2.3

9.5

11.6