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Thailand

January Overview

January is one of the best and most popular months of the year to visit Thailand with pleasant weather conditions throughout the country. 

It is a great time for trekking in northern Thailand as the weather is likely to be cool and dry, with average temperatures of 20-24°C in the day time. Evening temperatures in the north can be chilly so we recommend packing a jumper.

Bangkok is dry and warm – temperatures tend to be in the high 20°C’s throughout the month. The Khao Sok National Park in southern Thailand is mostly dry during January, however as it is a tropical rainforest you should expect rain showers even if you’re visiting during dry season. 

Conditions on the islands and beaches in southern Thailand are similar from one coast to the other with plenty of blue skies and sunshine. On the west coast rainfall is unlikely, whilst the east coast beaches such as Koh Samui and Koh Pha Ngan may experience occasional short showers, especially at the beginning of the month as the wet season draws to an end. On both coasts a cool breeze helps to keep the temperatures more moderate than later in the year - average 26-29°C. Dry weather and warm sea temperatures make for excellent diving conditions around Phuket, Khao Lak & Krabi. 

February Overview

February is an excellent month to travel to Thailand.

Chiang Mai, Chiang Rai and much of northern Thailand tend to be cool and dry, with average temperatures of 22-25°C. Bangkok tends to be warmer due to its lower altitude, and you can expect temperatures in the high 20°C’s.

February is one of the driest and warmest months of the year for Khao Sok National Park, however this is a rainforest so showers can be experienced even during dry season.  

It is a perfect time to visit southern Thailand with blue skies, sunshine and little chance of rain. You can expect average daily temperatures of 26-31°C. The east coast islands of Koh Chang & Koh Kood may experience the occasional rain shower, but this shouldn't deter you from visiting these islands in February. The west coast (around Phuket, Khao Lak & Krabi) offers excellent diving conditions in February, with good underwater visibility and warm water temperatures.

March Overview

Temperatures rise throughout the country.

In northern Thailand daytime temperatures can hit 35°C, and you can also expect high temperatures and little chance of rain in Bangkok and central Thailand. Sightseeing in the heat and humidity can be hard work so we suggest that you head out either first thing in the morning or late in the afternoon rather than embarking on full day excursions.

Khao Sok National Park is mostly dry, although humidity levels are high and temperatures can reach 33°C.  

In southern Thailand you can expect dry, sunny weather with plenty of blue skies and little chance of rain. Average daily temperatures of 26-31°C can be expected, with the west coast beaches of Phuket, Khao Lak and Krabi marginally warmer than Koh Samui and the east coast islands.

You’ll find excellent diving conditions in the Andaman Sea on the west coast and there’s a good chance of spotting manta rays and whale sharks.

April Overview

April is one of the hottest months of the year in Thailand, with average temperatures in the high 30°C’s. The chances of rain are still relatively low, although you should expect the occasional downpour towards the end of the month as the rainy season approaches.

The heat in Bangkok and central Thailand (around Kanchanaburi) can be particularly uncomfortable and sightseeing can be hard work so we suggest that you head out either first thing in the morning or late in the afternoon rather than embarking on full day excursions.   

To avoid the heat, you can head to the beaches and islands in southern Thailand as temperatures are slightly cooler – average 29-34°C.  You can expect dry weather on the east coast, however rain showers are likely on the west coast beaches of Phuket, Khao Lak and Krabi, particularly towards the end of the month. The east coast offers better diving conditions than the west coast in April, with good underwater visibility and the possibility of spotting whale sharks around Koh Tao and Koh Samui.  

Songkran (Thai New Year) is celebrated from 13th-15th April and it is one of the most prominent festivals in Thailand. People celebrate by taking to the streets and throwing buckets of water on each other which is meant to symbolise washing away the old year and refreshing everything for the New Year. This is a really fun time to be in Thailand, and even though the rainy season hasn’t started you should expect to get wet when you’re out and about as everyone has a water gun or bucket of water and no-one can escape getting soaked.

May Overview

May is slightly cooler than April, although you can still expect highs of 33-34°C. Early May is usually dry, however you can expect rain later in the month. The short, heavy showers help to break up the humidity which makes for more comfortable conditions for sightseeing in Bangkok and central Thailand (around Kanchanaburi).

Khao Sok National Park is warm, wet and very humid in May. 

The islands of Koh Chang and Koh Kood are particularly wet during this month, and rain is likely on the west coast beaches of Phuket, Khao Lak and Krabi. If you’re looking for guaranteed sunshine and you should head to Hua Hin and Cha Am and the east coast beaches of Koh Samui, Khanom and Koh Pha Ngan as they tend to be relatively dry.

Despite the rain May can be a great month to visit Thailand, and there’s the added bonus that there’s fewer tourists than in other months.

June Overview

June is the wet season in Thailand and rain occurs throughout the country, however it is still considered a good month to visit and you can expect plenty of sunshine between the showers. Temperatures are around 29-31°C and humidity can be very high, but thankfully the short, heavy showers help break the humidity and make life a little more bearable. 

The countryside in northern and central Thailand becomes more lush and green and the waterfalls are at their most impressive. If you’re planning on trekking in the Golden Triangle region please bear in mind that the conditions may be muddy and slippery.

Khao Sok National Park is still warm, wet and very humid in June. 

The islands of Koh Chang and Koh Kood are particularly wet during this month, and rain is likely on the west coast beaches of Phuket, Khao Lak and Krabi. If you’re looking for guaranteed sunshine and you should head to Hua Hin and Cha Am and the east coast beaches of Koh Samui, Khanom and Koh Pha Ngan as they tend to be relatively dry. You can expect good diving conditions around Koh Tao and the east coast islands. 

July Overview

Temperatures drop slightly throughout the country in July - average 28-29°C.

The rain continues, however you’ll find that there’s still plenty of sunshine between the downpours. The showers tend to be short earlier in the month, but more prolonged later in the month.

The countryside in northern and central Thailand becomes more lush and green and the waterfalls are at their most impressive and rivers are in full flow. If you’re planning on trekking in the Golden Triangle region please bear in mind that the conditions may be muddy and slippery.

The islands of Koh Chang and Koh Kood are particularly wet during this month.  Further south you can expect rough seas off the west coast and the beaches of Phuket, Krabi and Khao Lak are likely to have heavier downpours than the east coast beaches of Koh Samui and Koh Pha Ngan, which are relatively dry and are still enjoying prolonged sunny spells. July is a popular month for diving around the island of Koh Tao.  

Khao Phansa – Buddhist Lent - starts on the full-moon in July and lasts until October. Khao Phansa is also known as the “the Rains Retreat” because it occurs right at the beginning of the rainy season and Buddhist monks take this opportunity to retreat inside their temples for a three-month period of study and meditation. This tradition of a “rainy season retreat” predates Buddhism, but it was followed by Buddha during his lifetime, which encourages many to emulate him today. Many monks enter monastic life on Khao Phansa Day, staying in monasteries and temples until the rainy season ends on Wan Ok Phansa Day. There are many festivals held all over Thailand on Khao Phansa Day and it’s an interesting time to visit the country. In particular, Chiang Mai is known for its candle processions on Khao Phansa Day.

August Overview

August is not considered the best time to travel to Thailand. 

Northern Thailand has its heaviest rainfall of the year during August and in remote regions, such as Nan and Chiang Kham, the heavy rain makes road travel difficult.

If you’re visiting the islands of Koh Chang and Koh Kood, or the west coast beaches of Phuket, Khao Lak and Krabi you should expect rain every day. Hua Hin and Cha Am, and the east coast beaches of Koh Samui, Khanom and Koh Phan Ngan tend to be mostly dry, although you might experience the occasional shower.    

Temperatures throughout the country drop slightly - average 26-30°C, however humidity levels remain high.

September Overview

September is the wettest month of the year in Thailand. Temperatures decline gradually throughout the month, and thunder storms are not unusual as the humidity reaches its peak. 

It’s not a great time to visit the islands and beaches of southern Thailand as conditions are generally poor with heavy rain and rough seas on the west coast (Phuket, Krabi, Khao Lak) and increasingly heavy rains in Koh Samui and Koh Pha Ngan on the south east coast. Hua Hin and Cha Am are likely to offer the best beach conditions in September.  

This is one of the wettest months in Khao Sok National Park, but don’t be put off by the rain: average temperatures are a comfortable 25-26°C, the rainforest is green and lush, and there is a greater chance of spotting wildlife. 

October Overview

Although you should expect rainy days at the start of October, you’ll find that rainfall decreases as the month progresses.  This is a good month to travel to Thailand with cooler, more comfortable temperatures, lower humidity, and less chance of rain towards the end of the month.

The islands of Koh Chang and Koh Kood still experience wet conditions, although rainfall is significantly less than in previous months. Further south, average temperatures are a comfortable 25-27°C, but rainfall is still high on both sides of the peninsula.

Khao Sok National Park is very wet in October, but don’t be put off by the rain: average temperatures during are a comfortable 25-26°C, the rainforest is green and lush, and there is a greater chance of spotting wildlife. 

November Overview

Moderate temperatures - between 25-30°C - throughout most of the country, low humidity, very little rainfall and plenty of sunshine make this a popular month to visit Thailand.

It is a great month to visit Chiang Mai, Chiang Rai and northern Thailand as the region enjoys dry, sunny days with pleasant daytime temperatures. Evening temperatures in the north can be a little chilly so we recommend that you pack a jumper. You can expect dry and sunny weather in central Thailand, making this a good month for sightseeing in and around Kanchanaburi. 

The islands of Koh Chang and Koh Kood are ideal in November, with very little rain and average temperatures in the region of 28°C. Hua Hin and Cha Am also enjoy plenty of sunshine and minimal rainfall this month. Further south the east coast resorts of Koh Samui and Koh Pha Ngan are still wet, however Phuket, Khao Lak and Krabi on the west coast tend to be dry and sunny.

Loy Krathong is Thailand's 'Festival of Lights' and it takes place at the end of the rainy season – usually on the full moon in November. On the evening of Loy Krathong people gather around lakes, rivers and canals to pay respects to the Goddess of Water by releasing lotus shaped rafts, decorated with candles, incense and flowers onto the water. The sight of thousands of Krathongs with their flickering candles is a truly magical site.

December Overview

With its dry, sunny weather, relatively cool temperatures and low humidity, December is one of the most popular months to travel to Thailand. 

In northern Thailand conditions are perfect for trekking in the Golden Triangle region and exploring the Chiang Mai countryside, with temperatures slightly cooler than in Bangkok - average 23-25°C. 

You can expect excellent weather in southern Thailand with blue skies and temperatures of 31°C. The only region to see rainfall is the south east - Koh Samui, Koh Tao, Khanom - although there’s still plenty of sunshine between the showers.

Dry conditions and warm sea temperatures off the west coast make December an ideal month for diving around Phuket, Khao Lak & Krabi.

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