Best time to visit Thailand

January Overview

For travellers seeking the ‘best’ time to visit Thailand, January often comes out on top. One of the most popular months to visit, weather is enjoyable throughout the country and tourist numbers are at an annual high.

In the north, conditions are cool and dry, which prove to offer ideal conditions for trekking and adventure sports. From the Golden Triangle region in the northeast to the mountains of Chiang Mai further west, temperatures hover in the low to mid 20s, with evenings dropping towards the cooler end of the spectrum.

Further south towards Bangkok, the temperatures are equally as pleasant, though a bit on the warmer side (sitting in the high 20’s). The city experiences relatively dry weather, barring some the usual humidity of the tropics.

Continuing even further south, Khao Sok National Park enters into one of its driest months in January. While this doesn’t always prove to be ideal for wildlife spotting, it is still a pleasant time to visit. Additionally, being one of the wettest regions of the country, Khao Sok also may still experience some rainfall during this time of year.

In the far south, along the Gulf of Thailand and Andaman, the weather is very similar which proves to offer ideal conditions for beach goers. While the occasional rain may fall, particularly in Koh Samui and Koh Phangan, days generally offer ideal beach weather (temperatures hovering in the high 20s). For those seeking to do a bit of diving during their southern holidays, water clarity is peak around Phuket and Krabi.

March Overview

March marks the first real rise in temperatures across Thailand, with the ‘cooler’ weather of the first two months of the year slowly disappearing.

In the far north, between the Golden Triangle, Chiang Rai and Chiang Mai, temperatures slowly begin to creep up and cans sometimes hit the mid 30s. While conditions are still dry, the higher temperatures can prove to be a bit more trying for adventure activities.

Farther south in Bangkok and the central regions of the country, the temperatures also rise, with average daily temperatures in the mid 30s. While conditions stay relatively dry, the high temperatures can make sightseeing a bit more challenging, so be sure to hydrate more often and seek the shelter of shade… and air conditioning!

For those visiting the Khao Sok region in March, expect temperatures in the low to mid 30s. Conditions remain dry, but humidity is on the rise which can prove to be quite heavy in the already humid rainforest region.

In the far south, the higher temperatures are still warmly welcomed, making for ideal beach weather. While the days hover in the high 20s and low 30s, rain is relatively non existent and the waters are warm and clear. On the Andaman side of the south, temperatures are generally a bit higher than they are on the Gulf side, however both offer excellent beach climates. For those planning diving excursions in the south, March continues to offer ideal conditions.

Where’s that haze coming from?

If you visit the north or more rural areas in Thailand during March/April, you may notice a heavy haze drifting over the region. This is due to the farming techniques still practiced in the countryside, known as slash and burn. After crops have been harvested, the land is quite literally set alight, burning off any leftovers in the fields. The ash settles down after the fires, nourishing the lands and getting them ready for the next planting season. The smoke, however, lingers heavy in the air and often obstructs views across the country.

May Overview

After the high temperatures of April, May starts to see things cool down a bit, but not as much as some would hope. Highs in the mid 30s are still a reality and rainfall becomes more common throughout the country. While the rains are more prevalent, May is still a great time to visit the country, particularly in certain southern regions of the country.

In the north and central regions of the country, temperatures slowly start to decrease with the more common rains. The Khao Sok area during May is particularly warm and wet, with high humidity, which can make for great wildlife viewing. Farther south, there is a high chance of rain along the Andaman beaches of Phuket and Krabi, while more northern beach escapes (Hua Hin and Cha Am) can still guarantee sunseekers plenty of rain free days. Similarly, on the Gulf side, the islands of Koh Samui and Koh Phangan enjoy more rain-free days than their counterparts on the other side of the peninsula.

June Overview

June is known to be one of the more wet months in Thailand. Rains are a common occurrence throughout the country and temperatures still hover in the low 30s. While the rains are almost a guarantee, they still only come in short-lived bursts, which leaves plenty of time for sightseeing and exploring.

In the north, the rains bring back the lush, verdant landscapes which dried up with the hotter parts of the year. While this can make for some great trekking experiences, conditions are guaranteed to be a bit muddy (particularly in the Golden Triangle area), which can prove messy for some travellers. Further south (Bangkok and surrounding), conditions are quite similar with more steady rainfall throughout the region.

In the southern parts of the country, weather patterns are warm and wet from Khao Sok all the way to Phuket and Krabi. Rain is a common theme and beach weather can be a bit iffy during this time. On the same note, the farther Gulf islands of Koh Chang and Koh Kood experience similar rains. Luckily, the inner Gulf escapes of Koh Samui, Koh Phangan, Hua Hin and Cha Am offer plenty of beautiful, rain-free days which prove ideal for travellers still seeking a bit of sun and sand. For clear diving experiences, the waters around Koh Tao are ideal during this time.

July Overview

July marks another transitional period in Thailand, when temperatures finally start breaking from the 30s. Creeping down into the high 20s, the rains get stronger and longer lasting, which extend all the way into August.

The north moves into one of its wettest months of the year in July, which proves to make trekking very difficult, if not impossible in some parts. Despite the wet conditions, the rains create for much more lush conditions which prove to be beautiful during this time of the year. This is also a great time to see waterfalls and rushing rivers at their best. Similar weather patterns creep all the way down the country to the Bangkok region, which is also experiencing high rains at this time.

The southern regions are split between the rains, with Koh Chang, Koh Kood, Krabi, Phuket and Khao Lak all experiencing heavy rainfall. On the other side of the peninsula, however, Koh Samui, Koh Phangan and Koh Tao still enjoy relatively dry conditions, offering an oasis of sun and dry weather to beach-going travellers. Again, July marks an excellent time for diving in the waters surrounding Koh Tao.

August Overview

August is traditionally the wettest month in Thailand, with temperatures hovering in the mid 20s to low 30s. Rainfall is at its heaviest across the north, with downpours covering the area between the Golden Triangle and Chiang Rai all the way west to Chiang Mai. Trekking is exceedingly wet during this time of the year, and can prove to be impossible in some parts of the country. For those seeking to trek in the north during this time, be sure to speak ahead of time with our representatives to see where it is still possible.

In the beach getaways of Koh Kood, Koh Chang, Krabi and Phuket, the weather still is at its worst, with heavy rains covering the region. For those planning a beach getaway, it’s best to move plans to the other side of the peninsula, where sunny, dry days are still a common occurrence. From Koh Samui and Koh Phangan to Hua Hin and Cha Am, this is one of the final dry months for beach weather.

September Overview

Similar to August, September in Thailand is another of the wettest months to visit. Tourist numbers are at a seasonal low and great deals for low season can be found throughout the country. Rain falls heavily across the country and temperatures stay on a steady decline, generally sitting around the mid to high 20s. With peak humidity hanging heavy in the air, this is a big month for storms across the country.

For those still hoping to squeeze in a few beach days, southern Thailand’s offerings start to decrease. The rain-soaked destinations of Krabi and Phuket remain wet and the once go-to options of Koh Samui and Koh Phangan now move into their wet season. The resort towns of Hua Hin and Cha Am are the last places in the country to stay dry, but sun is never a guarantee during this time.

On a more positive note, while the Khao Sok area is entirely saturated in rain, September actually marks one of the best months to visit for wildlife spotting. The rains have turned the landscapes into vibrant green escapes, proving ideal for a range of the park’s exotic wildlife. While it’s necessary to bring appropriate rain gear, this is a great time to visit for those who are hoping to see some beautiful wildlife.

October Overview

October marks another transitional period for Thailand. The months of rains start to slowly subside and the temperatures start slipping as the month progresses. In the north, temperatures begin falling lower, getting the region ready to move into its ‘winter’ season. Between Chiang Rai and Chiang Mai, daily averages are around the mid 20s.

For those seeking a beach holiday, October doesn’t have much to offer with sunshine and dry days. While the rains aren’t as heavy as they have been in the previous few months, conditions are still less than ideal. While almost all the traditional beach destinations are experiencing rains (Koh Kood, Koh Chang, Krabi, Phuket, Samui and Phangan), temperatures are quite comfortable in the mid to high 20s. Despite the seasonal rains of October, destinations such as Phuket and Krabi are slowly creeping out of their wet season, and as the month moves towards its latter half, nicer days are a more common occurrence.

In Khao Sok National Park, October again marks one of the wettest points of the year, which, as previously mentioned, also makes for some of the best wildlife spotting. For those who don’t mind donning raingear and getting a bit wet during their visit, their resilience will be rewarded with some great wildlife spotting. Temperatures hover in the mid to high 20s, which makes visiting quite comfortable… outside the wet conditions.

November Overview

The transitions of October lead into November, which marks the end of the wet season in Thailand. Dry conditions slowly start returning, humidity is at a low and temperatures are all the more bearable.

For those seeking to visit the northern parts of Thailand, November is an ideal time to visit. In Chiang Rai, Chiang Mai and the Golden Triangle area, the rains have left behind lush landscapes which make for some beautiful touring. Temperatures are at an enjoyable low and outdoor activities are back on the menu again. In central Thailand, conditions are quite similar, which make visiting Bangkok and Kanchanaburi exceptionally enjoyable.

November also marks a great change for some beach destinations of Thailand, with the months of rain slowly fading away. Koh Chang, Koh Kood, Hua Hin, Cha Am, Phuket and Krabi all offer some of the region’s best weather, with little rain and temperatures hovering around the high 20s. On the other hand, the Gulf-side destinations of Koh Samui and Koh Phangan are in the middle of their wet season, and are best avoided during this time.

December Overview

For travellers looking for an end of the year getaway, December marks one of the most ideal times to visit Thailand. Rainfall is minimal across the country, temperatures are moderate and enjoyable, and sunshine can be found (almost) everywhere.

In the northern regions, Chiang Mai and Chiang Rai are in their winter months, where cool temperatures and low humidity are contrasted with sunny days. With temperatures hovering in the low to mid 20s, this is an ideal time for trekking experiences across the north. Further south in the country, Bangkok and the surrounding regions also experience ideal weather during December, which makes it a great time to visit.

For beach goers, the best of the year is coming back on the map again with ideal conditions spanning almost the entire region. Temperatures can reach as high as the low 30s and sunshine and blue skies are to be expected. Koh Kood, Koh Chang, Phuket, Krabi, Hua Hin and Cha Am are all ideal to visit during this time. Alternatively, the Gulf-destinations of Koh Samui and Koh Phangan are slowly moving out of their rainy season. While the occasional rain will pass through, sunny days slowly begin to offset the precipitation.