Index

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• Introduction
• Mountains - Taunggyi
• Inland areas - Myitkyina, Mandalay
• The coast - Sittwe, Yangon, Mergui Islands
• Cyclones
• Best Time
• What to pack

Introduction

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In Burma (or Myanmar), the climate is generally tropical, with a rainy season from mid-May to October due to the southwest monsoon, a cool and dry season from November to mid-February, and a hot pre-monsoon season from mid-February to the beginning or the middle of May.
In addition, there are mountainous areas, with a mild or cool climate, but also a portion of the Himalayan range in the far north, which is very cold, at least at hith altitude.
The rains in the monsoon season are plentiful along the coast, and are usually abundant on the mountain slopes, while in the interior the monsoon penetrates with more difficulty, so much so that some inland valleys and plains are almost arid.
The sun in Burma shines regularly in the dry season, while in the rainy season it is rarely seen.

Winter, from mid-November to mid-February, is relatively cool in the center-north, while it is hot in the south. The weather is mostly sunny and warm in the daytime, but sometimes cool air masses from China may lower the night temperatures almost to the freezing point in the north, to about 5 °C (41 °F) in the center-north, to 8/10 °C (46/50 °F) in Yangon and on the north coast, and to 12/15 °C (54/59 °F) along the south coast.
In winter, the biggest differences are recorded: the average daily temperature in January is 18 °C (64 °F) in Myitkyina, 20 °C (68 °F) in Mandalay, 21.5 °C (71 °F) in Sittwe, which is located on the northern coast (overlooking the Bay of Bengal), 25 °C (77 °F) in Yangon, and 26 °C (79 °F) along the south coast. So winter is hot only starting from the area of Yangon (or Rangoon), the former capital, and the nearby beaches of Chaungtha and Ngwesaung.

In the pre-monsoon period, from mid-February to the beginning or the middle of May, the weather remains sunny, but the temperature gradually rises, and in mountainous areas there can be some atmospheric instability in the afternoon, with the first thunderstorms. It's the hottest time of the year throughout Burma, especially in valleys and inland plains, where the heat becomes unbearable, and locals are eagerly awaiting for the arrival of the monsoon. The temperature can reach 37/38 °C (99/100 °F) along the southern coast, 40 °C (104 °F) in Yangon, and up to 43/45 °C in Mandalay and inland areas. Typically, April is the hottest month, in addition to the first part of May, before the monsoon comes.
On the coasts overlooking the Bay of Bengal and of the Andaman Sea, the pre-monsoon heating is less intense, both because of the thermal inertia of the sea and because the monsoon rains arrive earlier.

The monsoon season is less hot: the maximum temperature drops to around 28/29 °C (82/84 °F) on the coast, to 30 °C (86 °F) in Yangon, and 33/34 °C (91/93 °F) in Mandalay, but the heat is sultry and the sky is often cloudy. The monsoon arrives first on the southernmost coast of the Andaman Sea (see Tavoy, Kampong Ulu, Mergui Islands), around May 10-15, and it is very intense from the beginning, so much so that more than 400 millimeters (16 inches) of rain fall in this month. In Yangon, the monsoon arrives between 20-25 May, in Mandalay (where, however, its effects are more limited) between 25 May and 1 June, and finally it arrives in the far north between the first and the 10th of June.
The rainiest months are almost everywhere June, July and August, and the rains on the two coasts exposed to the west (the north coast on the Bay of Bengal and the south coast on the Andaman Sea) are plentiful; in fact, some areas receive more than 1,200 mm (47 in) of rain in a month! Yangon is a bit less rainy because it's located in the area of the mouths of the Irrawaddy River, which are exposed to the south, and receives about 500/600 mm (20/23.5 in) of rain per month during this period, while the central area where Mandalay is located receives only 100/150 mm (4/6 in) of rain per month.
In September, rainfall decreases a bit, except in the extreme south, while during October the monsoon withdraws, starting from the north; the monsoon is replaced by drier and gradually cooler winds, which blow from the north or northeast.
As mentioned, the monsoon particularly affects the coasts, on the Bay of Bengal and the Andaman Sea, which are exposed to the southwest winds. So this is the wettest area of Burma, where the amount of rainfall reaches 5,000 mm (195 in) in a year (or rather, in the rainy season, in fact, in the rest of the year the rains are very poor or absent here as well).
By contrast, in the central plains, precipitation drops below 900 mm (35.5 in) per year, as happens in Mandalay, Myngyan, Magway, and Bagan, the ancient capital of many Burmese kingdoms. On the contrary, at the foot of the mountains and on the slopes, the monsoon rains are plentiful, and during the wettest periods there may be landslides and floods.

The mountains

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In the far north, we find a mountainous area, which is an offshoot of the Himalayas, where there are perennial snows above 4,500 meters (15,000 ft). The highest mountain is Hkakabo Razi, 5,881 meters (19,295 feet) high. To the south, at the foot of the mountains, the rains are abundant, in fact they exceed 3,000 millimeters (118 inches) per year. However, there are heavy rainfalls from May to October, and a dry season in the rest of the year.

More to the south, to the west and the east of the plain we find two mountain ranges (the Arakan Mountains and the Shan Plateau), which have a mild climate. In the monsoon season, the rains are abundant, at times torrential, in the western range, while they are moderate in the eastern range, around 1,500 mm (60 in) per year. In winter, nights are cold.

Taunggyi

Here are the average temperatures of Taunggyi, located in the eastern range, at 1,400 meters (4,600 feet) above sea level.

In Taunggyii, 1,500 mm (60 in) of rain fall per year, with a rainy season from May to October, and a dry season from November to April.

Inland areas

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In the inland plain, the climate is tropical in the central-southern part, and subtropical in the northernmost part. The rains are heavy, but not exceptional, in the monsoon season.

Myitkyina

In Myitkyina, located in the north, in the Kachin State, winter is quite cool. In addition, on average the period from March to May is not as hot as in the center-south, although at times the temperature can reach 38-40 °C (100-104 °F).

In Myitkyina, rainfall amounts to 2,100 mm (83 in) per year. The rains are very abundant from June to August.

Mandalay

The central part is quite sheltered from the monsoon, so it is almost barren. Furthermore, this area is warmer than the north in winter and becomes very hot in the pre-monsoon season.
Here are the average temperatures in Mandalay.

In Mandalay, precipitation amounts to as low as 850 mm (33 in) per year. Here is the average precipitation.

In the Mandalay area, where the monsoon penetrates with more difficulty, even in the rainy season the sun shines on average for a few hours a day.



The new capital Naypyidaw (or Pyinmana) is located halfway between Mandalay and Yangon. The temperatures are similar to those of Mandalay, although in summer they decrease more, and drop to 30-32 °C (86-90 °F), since the monsoon has greater effects. Rainfall amounts to 1,450 mm (55 in) per year.

The coast

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Along the coast the climate is warm all year round, though in the northern part facing the Bay of Bengal on winter nights it can be a bit cool, and sometimes even a bit cold. As mentioned, the summer rains are very heavy.

Sittwe

Here are the average temperatures of Sittwe (formerly Akyab), located in the northern part of the coast, in the Rakhine State.

Here is the average precipitation in Sittwe. From June to August, up to one meter (3.3 feet) of rain falls per month.

The sea in Burma is warm enough to swim in all year round, in fact it doesn't drop below 25 °C (77 °F) along the northern coast in January and February. However, as mentioned, in winter the coast of the Bay of Bengal can sometimes be affected by cool air masses, which can lower a bit the air temperature.
Here are the average sea temperatures in Sittwe.

Yangon

More to the south, Yangon is located about 40 km (25 miles) away from the coast, in a plain that can heat up a lot in the period before the monsoon.

In Yangon the rains are not as abundant as on the coast exposed directly to the west, but they still exceed 500 mm (20 in) per month from June to August. Here is the average precipitation in Yangon.

Here are the average daily sunshine hours in Yangon. As you can see, while the dry season from November to April is sunny, from June to September the sun rarely shines.

Mergui Islands

In the southern part of the coast, in the Tanintharyi region, it's hot even in winter. Here we find the Mergui Islands (or Pashu).
Here are the temperatures of Myeik (formerly Mergui), the largest city of the area.

In the southernmost part of the coast, the rains are abundant; moreover the rainy season is a little longer, and as you can see some abundant downpours occur already in April.

On the southernmost coast of the Andaman Sea, in winter the sea is warmer than in the northern part, and the water temperature doesn't drop below 28 °C (82 °F).



To the north of the Andaman Islands, belonging to India, we find the archipelago of the Coco Islands, where the climate is similar to that of the Mergui islands.

Tropical cyclones

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Burma can be hit by tropical cyclones, usually from mid-April to early December. In general, they are most intense both at the beginning and the end of the period, that is, in May-June and October-November. The cyclones that form in the Indian Ocean and could hit the coasts of Burma directly from the south-west are more dangerous, although they generally follow a more northern trajectory, directly affecting Bangladesh. The area most at risk is the coastal one, which includes Yangon and the Irrawaddy Delta, as we saw in May 2008 with the terrible cyclone Nargis.
The cyclones that form in the Pacific Ocean and come from the east are called typhoons, and before reaching Burma they lose most of the energy over the countries most directly exposed, mainly Vietnam; therefore, they are less dangerous for Burma.

Best Time

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The best time to visit Burma runs from mid-December to mid-February: the weather is dry and sunny, and the risk of cyclones should by now have ceased. It's hot in Yangon and along the southern coast, while it can get cool at night or even cold in inland areas. By the second half of February, and even more in March and April, it's definitely hot, but along the coast you can enjoy the breeze and you can still swim and sunbathe, since the weather stays good.
If you want to travel in the rainy season, for example in July and August, you will prefer the central plains (see Mandalay, Myngyan, Magway) because they are more sheltered from the monsoon. In contrast, in summer the coasts are definitely inadvisable because they receive heavy rains.

What to pack

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In winter: in the north (see Myitkyina, Mandalay), and in cities located at medium or low-mountain altitudes (Taunggyi, Kengtung), bring spring/autumn clothes, light for the day, a jacket and a sweater for the evening, a hat and a scarf for cooler evenings. Along the coast, bring light clothing, a light sweatshirt for the evening, a scarf for the breeze; in the northern part of the coast, up to Yangon, you can add a light jacket or sweater for cooler evenings. In the Himalayas, bring mountain clothing, hiking boots.

In summer, bring lightweight clothing of natural fibres, a light raincoat or umbrella, comfortable shoes; a light sweater for the evening at low-mountain altitudes; in the Himalayas, warm clothes, a raincoat, hiking boots.

Before entering pagodas, it is customary to take off shoes, dress neatly and cover a little.
It's better for women to avoid shorts and miniskirts.