Bangkok Weather in April
Planning a trip to Bangkok in April? Here's what the weather is really like during the hottest month of the year in Thailand — and the one festival that turns the heat into part of the experience.
April is Bangkok's peak. Highs sit in the low to upper 90s°F, lows stay in the upper 70s to low 80s, and humidity begins climbing as the city transitions from the dry season toward the monsoon pattern that follows. Rain averages just 4–6 days, so it's still mostly dry, but the heat is genuinely intense — the kind that requires actively planning your day around it.
The saving grace: mid-April is Songkran, Thailand's traditional New Year celebration (April 13–15), when the entire country turns into a massive water fight. Locals and visitors alike take to the streets with water guns, hoses, and buckets, and the practice — rooted in traditions around washing away the previous year's misfortune — becomes the most effective way to cool off in the hottest month of the year. Meteorologist Ian Schwartz breaks down what to expect.
At a glance
What's covered
- Highs, lows, and why April is Thailand's peak heat
- Rising humidity as monsoon season approaches
- Rainy days and the shift out of dry season
- Songkran (Thai New Year, April 13–15) explained
- Heat safety, hydration, and pacing your days
Jump to a moment
Bangkok in April FAQ
How hot is Bangkok in April?
The hottest month of the year. Highs sit in the low to upper 90s°F, lows stay in the upper 70s to low 80s, and humidity begins climbing ahead of monsoon season. The heat requires actively planning your day around it — indoor activities during midday, outdoor sightseeing at dawn and after sunset, aggressive hydration.
What is Songkran?
Songkran is Thailand's traditional New Year celebration, held April 13–15. Rooted in Buddhist traditions of washing away the previous year's misfortune, it has evolved into a massive nationwide water fight — locals and visitors take to the streets with water guns, hoses, and buckets. It's also the most effective way to cool off during the hottest month of the year.
Is April a good time to visit Bangkok?
Only if you're prepared for extreme heat — or specifically here for Songkran. If Songkran is on your bucket list, mid-April is unmissable. Otherwise, February and December offer near-identical experiences with dramatically less heat and haze.