Weather in Thailand in February: where the water is warmer and there is less rain

February opens the best season for Thailand's beaches. The winter downpours are already behind, and the exhausting heat hasn't arrived yet. On the Andaman coast it's warm during the day, the sea is heated, and rain is rare.

Weather varies by region. On Phuket and Samui the sea is warm and calm, in the mountains in the north the nights are cool, and Bangkok remains the hottest of the major cities. Below you'll find water and air temperatures by resort, the number of rainy days, and tips on where swimming is more comfortable.

The main takeaway is simple: for a warm sea in February, head to the Andaman coast and the gulf islands. Treat the north as an add-on to the beach, not a replacement for it. Excursions, waterfalls, and rice terraces are accessible almost everywhere this month.

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Water and air temperatures in February

💡 In short:

• In February there's little rain, and the heat is still mild.
• The sea is warm at almost all resorts, so you can swim for a long time.
• At night in the northern mountains it's noticeably cooler than on the coast.

During the day on the coast the air warms up to about 30 °C (as of 09/2026, Weather and Climate). The water off Phuket and Krabi is warm, so swimming is comfortable even in the evening.

On Samui the sea is just as warm (as of 09/2026, Weather and Climate). The difference from the Andaman coast is small, but the waves near the shore are more noticeable here.

February is considered the velvet season not only because of the warmth. On the Andaman coast there's almost no wind, the sea is calm, and the sun doesn't beat down as hard as it does in April. A beach day here easily stretches from morning to sunset. Light cotton clothes and a couple of swimsuits will be enough.

© Krzysztof Golik · CC BY-SAPhoto: Krzysztof Golik, CC BY-SA (https://creativecommons.org/licenses/by-sa/4.0), Wikimedia Commons

Rain, humidity, and wind

February falls in the dry season. The northeast monsoon brings clear weather and low humidity, so rain is rare and short (as of 09/2026, monsoon and precipitation in Thailand).

On Phuket about 30 mm of precipitation falls over four rainy days per month (as of 09/2026, precipitation on Phuket). On Samui there's a bit more rain: about 44 mm over five days, and it most often falls at night (as of 09/2026, Samui weather).

You don't need a heavy raincoat: the rains are short and barely interfere with outings.

Humidity in February is lower than in summer, so the heat is easier to bear.

Tropical storms are rare in February, but a humid front sometimes comes in from the South China Sea. Then the weather on the islands changes for a few days, and the sea gets choppy.

Phuket: predictable weather and a warm sea

Phuket wins on stability: around 30 °C during the day, 26 °C at night, and rain falls on only four days of the month (as of 09/2026, climate tables). The island's west coast is calm in February, with almost no waves.

You'll be comfortable swimming from early morning. The water stays at 28-29 °C, so getting into the sea is pleasant even with kids. Hotels and cafes line the entire coast, so getting around takes minutes.

• Who it's for: those who want predictable weather and developed infrastructure.
• Not for: those looking for quiet and low prices.
• The catch: February falls in peak season, so accommodation costs more and beaches are more crowded.

Phuket hotels on Trip.com will help you compare prices for your dates.

Krabi: the same beaches, fewer people

Krabi lies on the same Andaman coast, so the weather almost matches Phuket: around 30 °C during the day, water at 28-29 °C (as of 09/2026, Krabi and Phuket weather).

© Cooper · CC BYPhoto: Cooper, CC BY (https://creativecommons.org/licenses/by/3.0), Wikimedia Commons

The difference is in the atmosphere. Krabi has fewer hotels and more cliffs, limestone islands, and mangroves. Boats to the islands leave from the coast every morning, and you can get back before sunset.

Boat trips in February are almost never cancelled: little wind, low waves. This month works well for trips to islands and lagoons.

• Who it's for: nature lovers and those who want a quiet getaway.
• Not for: those who want city infrastructure and shopping.
• The catch: evenings here are quieter than in Phuket, with fewer entertainment options.

Krabi hotels on Trip.com will help you compare seaside options.

Koh Samui: waves and warm sea

Koh Samui lies in the Gulf of Thailand, and February is one of its driest months: rain falls on about five days, with roughly 44 mm of precipitation (as of 09/2026, Koh Samui rainfall).

Water near the shore stays at 28-29 °C. There can be waves along the coast, so the sea here is not always flat.

• Who it's for: those who want a warm sea and don't mind a bit of wave action.
• Not for: those who want a flat sea every day.
• The catch: waves occur here more often than on the Andaman coast.

© Fabio Achilli from Milano, Italy · CC BYPhoto: Fabio Achilli from Milano, Italy, CC BY (https://creativecommons.org/licenses/by/2.0), Wikimedia Commons

Koh Samui hotels on Trip.com are grouped by the island's beaches.

Bangkok and central Thailand

February in Bangkok is dry but hot. Daytime temperatures climb to 32 °C, nights drop to 23 °C, and rain falls on only three days of the month (as of 09/2026, Bangkok weather in February).

A light haze hangs over the city in the mornings, clearing by midday. Humidity is lower than in April, so temple and market walks feel easier.

The central plains follow the same rhythm. There is almost no rain, and fewer tourists than on the coast.

© mapconcierge · CC BY-SAPhoto: mapconcierge, CC BY-SA (https://creativecommons.org/licenses/by-sa/4.0), Wikimedia Commons

Northern Thailand: cool nights

The north of the country is noticeably cooler than the coast in February. In the mountains, nighttime temperatures drop to around 10 °C (as of 09/2026, temperatures in northern Thailand).

© Khunkay · CC BY-SAPhoto: Khunkay, CC BY-SA (https://creativecommons.org/licenses/by-sa/3.0), Wikimedia Commons

During the day, the north is warm but not muggy. If you're going for trekking, waterfalls, and rice terraces, bring a light jacket for the evening.

• Who it's for: those who want to combine the beach with mountains and cooler weather.
• Not for: those who are only going for the sea.

Comparison table: where to swim in February

⁉️🤔 Frequently asked questions

What's the weather like in Phuket in February?

Phuket is the most predictable of Thailand's resorts in February. Daytime air stays around 30 °C, nighttime around 26 °C, water 28-29 °C (as of 09/2026, average temperatures in Phuket). Rain showers are short and occur about four days a month, mostly in the evening. The sea is calm, and you can swim from morning until sunset.

Can you swim in the sea in February?

Yes. The water at most resorts warms up to 28-29 °C. It's comfortable for both adults and children. There's only one exception: rare days with waves after a tropical storm.

Is Samui warmer than Phuket?

The difference is minimal. In Samui, the water is around 29 °C, in Phuket 28-29 °C (as of 09/2026, average temperatures in Samui). However, Samui more often has waves, while the sea in Phuket is calmer. Choose a resort based on the weather you want to catch.

What should you pack for Thailand in February?

Light cotton clothing, a swimsuit, high-SPF sunscreen, and mosquito repellent. In the evening in the north, a light jacket comes in handy; it's cool in the mountains. For temple excursions, bring clothing that covers your shoulders and knees.

In short: what's worth booking

February is suitable for a beach vacation almost everywhere along the coast. Choose a resort based on your scenario, not on a single degree.

• If you want predictable weather and infrastructure: go with Phuket.
• If you want nature and fewer people: look at Krabi.
• If you want a warm sea and don't mind waves: Samui works.
• If you're going for the city, temples, and mountains: add Bangkok or the north.

Trip.com can help you find a hotel for your chosen resort.