May weather forecast and climate
Bangkok, Thailand

A beautiful park in spring outside the Wat Ratchanatdaram Temple in the heart of Bangkok, Thailand
A beautiful park in spring outside the Wat Ratchanatdaram Temple in the heart of Bangkok, Thailand
May starts the wet and rainy season in Bangkok, and the heat tapers down slightly; the average temperatures are in the 26.1°C (79°F) to 34.4°C (93.9°F) range as the humidity increases to 75%.
The rainfall is to the tune of 248.9mm (9.8") and at least half the days in May witness cloud cover. The equatorial nearness produces convectional rain nearly every day and reduces the stifling heat. Heavy showers are likely, as are lightning and thunderstorms - it is almost mandatory to carry umbrellas or wear rain jackets while exploring Bangkok during the outbreak of the monsoon.

What is the temperature in May in Bangkok?

In Bangkok, Thailand, in May, the average high-temperature is 34.4°C (93.9°F), and the average low-temperature is 26.3°C (79.3°F).

What is the average humidity in May in Bangkok?

In Bangkok, Thailand, the average relative humidity in May is 75%.

How much does it rain in Bangkok in May?

In Bangkok, Thailand, during May, the rain falls for 16 days and regularly aggregates up to 247.7mm (9.8") of precipitation.

What is the month with the warmest sea water in Bangkok?

The month with the warmest seawater in Bangkok is May, with an average sea temperature of 29.9°C (85.8°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How warm is the water in May in Bangkok?

In Bangkok, Thailand, the average seawater temperature in May is 29.9°C (85.8°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the month with the highest UV index in Bangkok?

February through September, with an average UV index of 12, are months with the highest UV index in Bangkok.

What is the average UV index in May in Bangkok?

In May, the average UV index in Bangkok, Thailand, is 12.
Average temperature in May - Bangkok, Thailand
  • Average high temperature in May: 34.4°C

The warmest month (with the highest average high temperature) is April (35.4°C).
The month with the lowest average high temperature is December (31.7°C).

  • Average low temperature in May: 26.3°C

The month with the highest average low temperature is April (26.9°C).
The coldest month (with the lowest average low temperature) is December (22°C).

Average humidity in May - Bangkok, Thailand
  • Average humidity in May: 75%

The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is December (66%).

Average rainfall in May - Bangkok, Thailand
  • Average rainfall in May: 247.7mm

The wettest month (with the highest rainfall) is September (334.3mm).
The driest month (with the lowest rainfall) is December (6.3mm).

Average rainfall days in May - Bangkok, Thailand
  • Average rainfall days in May: 16 days

The month with the highest number of rainy days is September (21 days).
Months with the lowest number of rainy days are January and December (1 days).

Average sea temperature in May - Bangkok, Thailand
  • Average sea temperature in May: 29.9°C

The best month for swimming (with the highest average sea temperature) is May (29.9°C).
The coldest month (with the lowest average sea temperature) is January (26.7°C).

Average daylight in May / Average sunshine in May - Bangkok, Thailand
  • Average daylight in May: 12.8h

The month with the longest days is June (Average daylight: 12.9h).
The month with shortest days is December (Average daylight: 11.3h).

  • Average sunshine in May: 7h

The month with most sunshine is February (Average sunshine: 9h).
Months with least sunshine are August and September (Average sunshine: 5.2).

Average UV index in May - Bangkok, Thailand
  • Average UV index in May: 12

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).

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