May marks the transition from the hot season to the rainy season in Bangkok. While it is still hot during the day, the rainfall gradually increases.
But don’t worry – that doesn’t mean you have to cancel your trip to Bangkok. On the contrary: May brings exciting weather conditions that can even make your trip more enjoyable.
In this article, you can find out all about the Bangkok weather in May, what temperatures you can expect, what the humidity feels like and whether the city is worth a trip during this time.
Bangkok climate table: An overview of the year
Let’s start with our climate table for Bangkok, which gives you an overview of the best months to travel to the capital.
Here you can find more information about the best time to travel to Bangkok.
| Ø Max. Temp | Ø Min. Temp | Ø Precipitation | Ø Rainy days | |
| Jan | 31 (°C) | 21 (°C) | 10 mm | 2 |
| Feb | 32 (°C) | 22 (°C) | 30 mm | 3 |
| Mar | 34 (°C) | 25 (°C) | 40 mm | 5 |
| Apr | 35 (°C) | 26 (°C) | 90 mm | 10 |
| May | 34 (°C) | 26 (°C) | 220 mm | 19 |
| Jun | 33 (°C) | 26 (°C) | 150 mm | 18 |
| Jul | 33 (°C) | 26 (°C) | 175 mm | 19 |
| Aug | 33 (°C) | 26 (°C) | 200 mm | 20 |
| Sep | 32 (°C) | 25 (°C) | 320 mm | 23 |
| Oct | 31 (°C) | 24 (°C) | 220 mm | 21 |
| Nov | 30 (°C) | 23 (°C) | 60 mm | 11 |
| Dec | 30 (°C) | 22 (°C) | 10 mm | 2 |
Bangkok weather in May – what to expect in the capital
It remains warm to hot in Bangkok in May. Daytime highs average between 33 and 36 degrees Celsius, while nights are slightly more pleasant at 25 to 28 degrees Celsius.
Although May is still considered hot, it is somewhat more pleasant than the months of March and April, as the increasing rainfall can provide a slight cooling effect.
Nevertheless, you should be prepared for high temperatures, especially if you are out and about on foot a lot during the day.
Tip: Make sure your accommodation has good air conditioning – especially on warm nights, this can make the difference between a good night’s sleep and sleepless hours.
Humidity and perceived temperatures
Humidity rises significantly in May as the rainy season slowly makes itself felt. Values around 70 to 80 % are not uncommon.
This means that temperatures often feel even hotter than they actually are.
The heat can be oppressive, especially in the afternoon. It is therefore important to drink enough water and regularly seek out shady spots or air-conditioned rooms.
Tip: Wear light, breathable clothing made of cotton or linen and avoid synthetic fabrics that retain heat and moisture.
Tip: Book a guided tour to the main sights of the city to learn more about the history of Bangkok.
Rainy days and precipitation in May
May officially marks the start of the rainy season in Thailand, but that doesn’t mean it rains all day long.
Instead, you should be prepared for sudden, heavy showers that often only last for a short time.
The average amount of rain in May is around 190 to 220 mm, spread over 12 to 16 rainy days.
These tropical showers usually start in the afternoon or evening and can provide a pleasant cooling effect.
Tip: Always take a compact umbrella or a light rain jacket with you. Many locals use transparent plastic ponchos, which are available cheaply everywhere.
Sunshine and day length
Despite increasing rainfall, you still get 6 to 8 hours of sunshine a day in May. The sun rises at around 5:50 am and sets at around 6:40 pm.
This means that you have plenty of time for outdoor activities before a short rain shower in the afternoon or evening.
Tip: Use the early morning for sightseeing before the heat and humidity become too strong.
Temple visits or a boat tour on the Chao Phraya are ideal before the temperatures reach their peak.
Is a trip to Bangkok in May worthwhile?
Definitely! May is an interesting time to visit Bangkok, because although it is hot and humid, the onset of the rainy season brings some advantages:
- Fewer tourists: As many travelers avoid the rainy season, the sights are less crowded and you can enjoy popular places such as the Royal Palace or Wat Arun in a more relaxed way.
- Cheaper prices: Hotels and flights are often cheaper in May than in high season, allowing you to travel more budget-friendly.
- Refreshing rain showers: The short tropical downpours bring a welcome cooling and purify the air, making the city particularly pleasant after a shower.
Of course, you should be prepared for hot temperatures and occasional rain, but with the right planning, Bangkok is a wonderful place to explore in May.
Tip: This private tour of the city’s most important temples also takes you to Wat Arun, Wat Pho and the palace.
Bangkok weather in May – our tips for travelers
- Start early: Start early to explore sights such as the Grand Palace or Wat Arun before it gets too hot.
- Clothing: Light, breathable clothing is essential. Cotton or linen are ideal for keeping you cool.
- Hydration: Make sure you always have a bottle of water with you, as the heat and high humidity can quickly lead to dehydration.
- Sunscreen and hat: Direct sunlight can be intense. Good sun protection and a hat or cap are recommended.
- Planning: Try to avoid the hottest hours of the day and plan indoor activities or visits to shady places such as temples and markets during this time.
- Shopping malls: Visit air-conditioned shopping malls such as the MBK Center or IconSiam to escape the heat.
- Boat tours: A trip on the Chao Phraya River offers a refreshing breeze and great views of the city.
- Night markets: After sunset, you can explore the lively night markets, e.g. the Asiatique Riverfront or the Train Night Market Ratchada.
A brief summary of the Bangkok weather in May
May brings an exciting change in the weather to Bangkok: while the heat of the previous months slowly subsides, the first rains set in, providing refreshment.
Despite the higher humidity, the city remains a worthwhile destination with fewer tourists and lower prices.
With the right preparation, you can enjoy Bangkok to the full in May – from impressive temples and vibrant markets to relaxing boat trips on the Chao Phraya.
So, pack your bags and experience the city in a very special climate!
Tip: This Bangkok street food tour takes you to Chinatown, where you’ll learn more about the neighborhood’s history and food scene from your local guide.
Frequently asked questions about Bangkok weather in May
Finally, we answer some frequently asked questions about Bangkok weather in May.
How hot is it in Bangkok in May?
In May, temperatures in Bangkok range between 33 and 36 degrees Celsius during the day. At night it remains warm at 25 to 28 degrees Celsius. The perceived temperature can be even higher due to the high humidity.
Is May a good month for a trip to Bangkok?
Yes, May can be a good time to travel if you can tolerate the heat. There are fewer tourists, hotel prices are often cheaper and Bangkok is easy to explore despite the occasional rain shower.
Is it raining all day in Bangkok in May?
No, the rainy season starts in May, but the showers are usually short and heavy. They mainly occur in the afternoon or evening and often provide a pleasant cooling effect.
What clothes should I wear in Bangkok in May?
Light, breathable clothing made of cotton or linen is ideal. An umbrella or light poncho can be useful as it occasionally rains. Sun protection and headgear are also recommended.
How high is the humidity in Bangkok in May?
The humidity in Bangkok in May is usually between 70 and 80 %. This makes the temperature feel even warmer and you should drink plenty of water to prevent dehydration.
Are there many hours of sunshine in Bangkok in May?
Yes, despite the rainy season, you still get 6 to 8 hours of sunshine a day. The sun rises at around 5:50 am and sets at around 6:40 pm.
How can I prepare for the heat in Bangkok?
Drink plenty of water, take regular breaks in air-conditioned places and use the early morning hours for sightseeing. Sun protection and headgear also help.
Are there mosquitoes in Bangkok in May?
Yes, mosquitoes are more active in May due to the increasing humidity. Use mosquito spray, especially in the evening or near bodies of water.
Is it cheaper to travel to Bangkok in May?
Yes, as May is outside the peak season, you will often find cheaper flight and hotel prices. Attractions are also less crowded than in the winter months.
- About the Author
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Franzi is a long-term travel blogger, online editor, and content creator specializing in Tourism in Bangkok and Thailand.
