April is the hottest month of the year in Thailand, with temperatures often reaching 38–40 °C.

In the south, it's ideal for beach and water sports, while inland in the central and northern regions it's difficult for sightseeing. In the north, the scorching heat is exacerbated by smoke from burnt crops.

Is a trip to Thailand in April worthwhile?

Yes, if you love sunny days at the beach, can handle intense heat, and want to participate in the world-famous Songkran Festival (April 13–15). A flexible itinerary will help you make the most of it.

No. If you are sensitive to heat or want undisturbed outdoor viewings, it is not ideal.

What is the weather like in Thailand in April?

  • Temperature (day/night): 32–36 °C during the day, occasionally above 40 °C; 24–28 °C at night
  • Rainfall: 5–100 mm – mostly dry, with occasional short showers; slightly higher probability of afternoon/evening thunderstorms on the west coast (Andaman Islands), generally drier on the east coast (Gulf).
  • Humidity: 65–85% – higher inland and in the north, coastal areas slightly lower, but still humid
  • Water temperature: 28–31 °C – ideal for swimming and snorkeling

    • Average temperatures and rainfall amounts in Thai cities in April:

    Data source: Weather Spark.

    Chiang Mai and Northern Thailand in April

    In the north, April remains dry, similar to March. However, temperatures reach their peak here, rising above 38 °C (100 °F) for about half the month, with little cooling at night.

    Furthermore, the more northerly cities (Mae Hong Son, Pai) have fewer air-conditioned places, so it can be more difficult to escape the heat than in larger cities like Chiang Mai.

    To make matters worse, it is currently fire season. Smoke from field fires can envelop the region – a local from Chiang Mai even said: “Some years I haven’t been able to see Doi Suthep, our iconic mountain scenery, for an entire month.”

    Here's how to travel smartly: If you absolutely must go, only do outdoor activities in the early morning to avoid heatstroke. Bring an FFP2 mask if you have respiratory problems.

    Bangkok and Central Thailand in April

    In April, it's hot and dry here. In Bangkok, Ayutthaya, and Kanchanaburi, daytime highs often exceed 35°C. By late morning, it feels like walking on hot plates outdoors, and evenings hover around 27°C – the night markets transform into steamy saunas.

    Fortunately, Bangkok offers numerous air-conditioned refuges – from elegant shopping malls to cozy cafes in old shop buildings and even some temple halls.

    Those who want to escape the heat of the city should seek out mountainous regions like Khao Yai or coastal resorts like Pattaya and Koh Chang, where maximum temperatures are more likely to be around 32°C (90°F).

    Here's how to travel smartly: Visit tourist attractions in the morning before the worst of the heat sets in, and use your afternoons for river cruises, spa visits, or exploring air-conditioned markets.

    Southern Islands: Phuket vs. Koh Samui

    This is Thailand's coolest region in April – but "cool" here still means warm. Temperatures are typically 1–2 °C lower than inland, and the sea breeze makes it more bearable.

    On the Gulf Coast (Koh Samui, Koh Phangan and Koh Tao) you can expect plenty of sunshine, calm seas (around 30°C) and almost no rain. For a classic beach holiday, this is the safest choice.

    On the Andaman side (Phuket, Krabi, Phi Phi and Lanta) the situation is somewhat more complicated. It is hotter and more humid, and short afternoon or evening thunderstorms are frequent. The sea can be rough, so some boat trips may have to be cancelled.

    Those yearning for sun and calm waters will find the Gulf Islands ideal. The Andaman coast is also beautiful, but be prepared for a few rain showers.

    If you want to know when the best weather is for a visit to Thailand, you can check out our guide: Best and worst time to travel to Thailand.

    The best travel destinations in Thailand in April

    In Thailand, April is all about choosing the right region.

    In short: If you're looking for reliable sunshine, head to Koh Samui. For festivals, Bangkok or Chiang Mai are recommended. Nature lovers will find what they're looking for in Khao Sok, provided they're flexible. Phuket is also an option, although the weather there is less consistent.

    1. Ideal for sun & beaches: Koh Samui and the Gulf Islands

    Those who value reliable weather in April are best off in the Gulf of Thailand – Koh Samui, Koh Phangan and Koh Tao.

    April is the peak of the dry season here:

  • The calm sea is ideal for island hopping and water sports.

    • Whether you're relaxing at a resort or planning daily boat trips, this region offers the most consistent beach weather in April.

    2. Ideal for culture and festivals: Bangkok and Chiang Mai

    If you want to experience Thailand's biggest annual festival – Songkran (around April 13th to 15th) – Bangkok and Chiang Mai are the best choice.

    The Songkran festival in Bangkok is a huge, city-wide event: vast expanses of water, concerts, and street parties. And since the city offers countless shopping malls and indoor attractions, escaping the heat is easy when needed.

    Important compromise: Expect large crowds and very high hotel prices; therefore, book early.

    Chiang Mai offers the most traditional and festive version of Songkran. The entire old city transforms into one giant celebration. The blend of temples, mountains, and the exuberant festive atmosphere is unforgettable.

  • Accommodations are booked months in advance.
  • Air quality can deteriorate due to the wildfire season, especially at the beginning of April – some years are mild, others difficult.

    • 3. Ideal for nature lovers and those seeking peace and quiet: Khao Sok National Park

    Khao Sok is a truly special travel destination in April – lush, tranquil, and captivating. You'll experience towering limestone cliffs, misty mornings, and deep green rainforest landscapes. For most travelers, a stay in a floating bungalow on Cheow Lan Lake is the absolute highlight.

    April also marks the beginning of the pre-monsoon season, so short rain showers are to be expected. They usually pass quickly, but you should be flexible and able to adjust your plans accordingly. If you value nature more than perfect weather, you'll love it.

    4. Caution is advised: Phuket (Andaman Sea)

    In Phuket there are still beautiful days in April, but the weather is less consistent than on the Gulf Coast.

    The Andaman Sea enters its rainy season in April, particularly from mid to late month. Weather conditions can change rapidly, and boat trips may be cancelled due to sea conditions.

    If you absolutely want to go to Phuket, aim for early April and don't have overly high expectations. It's still beautiful – it's just that the weather isn't the most reliable choice during that month.

    You can find more tips on our page: How to plan a trip to Thailand: 7 easy steps.

    Songkran Festival in Thailand in April

    Songkran, Thailand's traditional New Year festival, is famous for having the world's biggest and most fun water fight. The main celebrations take place from April 13th to 15th, with April 13th being the highlight.

    In Bangkok, lively street parties take place around Khao San Road and Silom (we were right in the middle of it, a wild water fight with thousands of people), while families who prefer something a little quieter can enjoy child-friendly events on Koh Samui.

    Besides water battles, cities like Chiang Mai, Ayutthaya and Sukhothai also offer large parades and peaceful Buddha bathing ceremonies, providing an insight into Thailand's rich traditions.

    Crowds and costs in Thailand in April

    April in Thailand is a month of mixed feelings. Both your travel experience and your budget depend on whether your trip coincides with the Songkran period (approximately April 10–16).

    This is one of the busiest times of the year. Popular cities and attractions are crowded, hotels book up quickly, and prices reach their peak – sometimes even higher than at Christmas and New Year's. To get a good room, you usually need to book well in advance.

    The situation changes almost overnight. From mid to late April, the tourist crowds disappear, and hotel prices drop back to normal levels or even off-season levels. Traveling during this time is significantly more relaxed, and room rates can be 30–50% cheaper than during Songkran.

    Avoid the peak travel season during Songkran and plan your trip for late April. It's quieter, cheaper, and overall much more recommendable then.

    What you should pack for Thailand in April

    April is very hot, so choose light, breathable clothing that you feel comfortable in.

    Cotton and linen are good choices, and loose fits will help keep you cool all day. A hat and sunglasses are also useful, as the sun can be intense. For particularly cool indoor spaces, a light extra layer is recommended.

    If your trip coincides with Songkran, quick-drying clothes are most practical. Sandals that can get wet are more practical than sneakers. Avoid white clothing – it becomes see-through when wet.

    Choose outfits that are simple, airy, and ready for heat and (if it's Songkran) plenty of water.

    Frequently asked questions about Thailand in April

    1. Is it too hot in Thailand in April? April is the hottest month. Average temperatures nationwide are around 30–36 °C. In many places, it can get sweltering in the afternoon, sometimes exceeding 38–40 °C. The breeze makes it more pleasant on the beaches.

    2. Is April a good month to travel to Thailand? Yes, if you like sunny beaches and want to experience the Songkran festival.

    The heat and high humidity can be strenuous, especially for outdoor activities in the central and northern regions. Therefore, it's best to plan your activities for the cooler morning and evening hours and, if possible, concentrate on coastal areas.

    April is also the last dry month before the rainy season begins in May. Learn more about the best time to travel to Thailand.

    3. Where should I travel to in Thailand in April – the beaches, the north, or the islands? Beaches and islands are generally cooler and windier, while northern cities like Chiang Mai are hotter and often smoky in April.

    4. Which Thai islands are best to visit in April? April is ideal for the southern islands. The west coast (Phuket, Krabi, Phi Phi) is hot and humid, with occasional short showers possible towards the end of the month. The east coast (Koh Samui, Koh Phangan) is drier and sunnier, making it better suited for beach days and snorkeling trips.

    5. Is Thailand crowded in April? It depends on the time of year. During the Songkran festival (roughly April 10-16), visitor numbers and hotel prices reach their peak. Outside of Songkran, tourist numbers drop, and accommodation is significantly easier and cheaper to find.

    Travel to Thailand with us

    Thailand in April has so much to offer, but planning can be tricky. We'd love to help you create a tailor-made trip that suits your pace and preferences. Let's plan together.

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