Bangkok Weather in May
Planning a trip to Bangkok in May? Here's what the weather is really like as Thailand transitions out of the peak-heat dry season and into the start of monsoon.
May in Bangkok is a shift month. Highs settle into the low to mid-90s°F — still hot, but noticeably a step down from April's peak. Lows sit in the 70s and 80s, humidity climbs sharply, and the biggest change of the year happens: rain jumps from around 5 days in April to 13–15 days in May. That's the arrival of monsoon season, and it brings daily afternoon thunderstorms that typically hit hard, dump fast, and then move on.
Those storms are actually a small blessing — they briefly break the humidity and cool the city off. It's still a fantastic time to visit, especially if you plan your day around the afternoon storm window. Meteorologist Ian Schwartz breaks down what to expect.
At a glance
What's covered
- Highs, lows, and why the humidity gets more intense
- The dramatic jump in rainy days
- How monsoon season actually arrives
- What daily thunderstorms look like
- Why an umbrella becomes essential in May
Jump to a moment
Bangkok in May FAQ
What is the weather like in Bangkok in May?
A shift month. Highs settle into the low to mid-90s°F — still hot, but a step down from April's peak. Lows sit in the 70s and 80s, humidity climbs sharply, and rain jumps from around 5 days in April to 13–15 days in May. That's the arrival of monsoon season.
What is monsoon season like in Bangkok?
Not what many travelers expect. Monsoon rains in Bangkok typically arrive as daily afternoon thunderstorms that hit hard, dump fast, and then move on. It's not all-day rain — most days have clear mornings and a heavy 30-minute to 2-hour storm window in the afternoon. Plan your day around it.
Is May a good time to visit Bangkok?
Still a great time. The afternoon storms briefly break the humidity and cool the city off, hotel prices start dropping as tourism eases, and the crowds thin from the peak-season January-February window. Just bring an umbrella and plan around the afternoon storm window.