Bangkok weather in May
May sees the start of the hot, wet season.
You can expect very hot and humid weather, with sunny skies interspersed with afternoon rain showers. Daytime temperatures also start to rise averaging 31°C (88°F).
Frequently asked questions
We answer the most commonly asked questions (FAQs) about Bangkok weather in May.
How hot is it in Bangkok in May?
Maximum daytime temperatures in Bangkok in May usually reach 35°C (95°F) with extreme heat and humidity, and a night-time low of 27°C (80°F).
Together with April, May is one of the hottest months of the year in Bangkok.
How sunny is it in Bangkok in May?
There are normally seven hours of bright sunshine each day in Bangkok in May – that's around 54% of daylight hours.
Sunrise & sunset in May?
Sunrise is around 5:50am with sunset around 6:40pm.
Does it rain in Bangkok in May?
There are usually 16 days with some rain in Bangkok in May; the average monthly rainfall is 250mm (10in).
How windy is it in Bangkok in May?
May sees an average hourly wind speed of 11 kilometres per hour (7 mph; 6 knots).
What to do in Bangkok in May?
Weather conditions in May are still good for shopping, sightseeing and exploring the colourful temples of the Old City as well as cruising the Chao Phraya River and the fascinating klongs of Thonburi.
Local holidays?
Labour Day – 2nd May; Coronation of King Maha Vajiralongkorn – 4th May; Coronation Day – 5th May; Royal Ploughing Ceremony – 13th May; Vesak – 16th May.
This is the low season in Bangkok, with a corresponding drop in hotel rates, and sightseeing attractions are less crowded. If you don't mind getting your feet wet and carrying an umbrella, it’s still a good time to visit.
Bangkok weather in May
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High Temp: 35°C (95°F) |
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Low Temp: 27°C (80°F) |
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Sunshine: 7 hours per day |
13
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Daylight: 13 hours per day |
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Wind speed: 11 km/h (7 mph; 6 knots) |
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Wet Days: 16 days with some rain |
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Rainfall: 250mm (10in) per month |
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Comfort Level: Extreme heat & 72% humidity |
11
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UV Index: Extreme |
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Sea Temp: 30°C (86°F) |
| Bangkok, Thailand | |
Best time to visit Bangkok
The best time to visit Bangkok is between November and February, when the city is mainly dry and not too hot, typically averaging 28°C (82°F) daily.
Bangkok experiences a hot tropical climate with a winter dry season. Typically, you can expect hot weather year-round, with three distinct seasons: hot and humid – March to May, average 31°C (88°F); hot and wet – June to October, average 30°C (86°F); and warm and dry – November to February, average 28°C (82°F).
Bangkok weather by month
Climate source: Meteorological data for Bangkok is based on weather statistics gathered for the 30-year period 1991 to 2020 by the Thai Meteorological Department at the closest weather stations: Don Mueang International Airport (DMK) and Suvarnabhumi Airport (BKK), located respectively 23km (14mi) north and 30km (18 mi) east of Bankok.
Advice on the best time to visit Bangkok is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.
Latest update: Bangkok weather in May: 20 August, 2025
Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.
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