Bangkok May — monsoon season rain over the Chao Phraya

Bangkok · Thailand

May

Rainy season begins: prices fall sharply but afternoon downpours become the norm.

Strong option

#8 of 12 months

There are better months for Bangkok — see the full ranking below.

See when to go instead →

Climate

High

32.6°C

Low

24.5°C

Rain

138mm

Sun

7hrs/day

30-year climate normals · Open Meteo ERA5

How May scores in Bangkok

Weather
Average
Value
Excellent
Crowds
Excellent
Events
Average
Atmosphere
Good

What you gain in May

  • Hotels and tours significantly cheaper than peak season
  • City noticeably quieter: temples and markets more authentic
  • First rains cool the oppressive heat — relief after March and April

What you sacrifice

  • 138mm of rain: heavy afternoon showers most days — outdoor plans need flexibility
  • Some river boat services and outdoor attractions reduce operations
  • Air quality improves but Bangkok's famous traffic worsens in rain

How May compares to November (best month)

FactorMayNovember
Weather
4
9
Value
8
6
Crowds
8
6

May in other destinations

Climate data: 30-year normals (1991–2020) from Open Meteo ERA5 reanalysis. Scores compare months within Bangkok, not across destinations. Methodology →