Bangkok is warm all year, so "best time" depends on what you value: comfortable walking weather, lower prices, festivals or quieter sights. In general, November to February offers the most pleasant conditions, March to May is the hottest, and June to October is the rainy season. This guide breaks the year down and explains what each season means for sightseeing. For planning, combine it with the 3-day itinerary and the Bangkok hub.
Weather varies from year to year, so treat the ranges below as typical patterns, not guarantees. The Thai Meteorological Department publishes forecasts and warnings.
The three seasons
| Season | Months (approx.) | Typical conditions | Crowds and prices |
|---|---|---|---|
| Cool / dry | Nov-Feb | Lower humidity, warm days, cooler mornings and evenings | Busiest; hotel prices highest at peak holiday dates |
| Hot | Mar-May | Very hot, often above 35 C in the afternoon; humid before the rains | Moderate; Songkran in April draws visitors |
| Rainy | Jun-Oct | Hot, humid, with frequent heavy showers, often in the afternoon or evening | Fewer visitors; lower hotel rates are common |
Temperatures and rainfall are indicative only, so check forecasts nearer your travel dates.
Month by month
November to February
This is the classic window for first-time visitors. The air is drier, mornings can feel almost cool, and outdoor sights such as the Grand Palace, Wat Pho and river walks are more comfortable. Expect more visitors, crowds at the palace, and higher hotel prices, especially around Christmas, New Year and Chinese New Year (dates vary each year). Book accommodation early.
March to May
The heat builds from March, and April is often the hottest month. Visit outdoor sights early in the morning and use midday for museums, malls, cafes and spas. April brings Songkran, the Thai New Year water festival, usually celebrated around 13-15 April. Streets in some districts turn into water-fight zones, so protect your phone and passport, and expect some businesses to close or change hours.
June to October
Rain is common but rarely lasts all day. Showers tend to arrive in the afternoon or evening, then clear. August to October can bring the heaviest rain, and some low-lying streets can flood for a few hours or longer in the worst spells. Public transport such as the BTS and MRT usually keeps running, and river boats can be affected by high water, so check conditions. In exchange you get fewer crowds, greener parks and good value hotels.
Rain can disrupt traffic more than sightseeing. Allow extra time for taxis, carry a compact umbrella or poncho, and keep an indoor backup such as a museum, spa or cooking class.
Festivals and events
Dates change each year, and many are based on the lunar calendar, so confirm them on the official tourism pages.
| Event | Typical timing | What it is |
|---|---|---|
| Chinese New Year | Jan or Feb | Celebrations in Yaowarat (Chinatown), with lanterns, food and lion dances |
| Songkran | About 13-15 April | Thai New Year with water festivities and temple ceremonies |
| Visakha Bucha, Asalha Bucha, Makha Bucha | Various, lunar calendar | Buddhist holy days; alcohol sale restrictions may apply |
| Loy Krathong | Usually November, full moon | Floating lanterns and baskets on water; river events |
| King's Birthday and national days | Dec 5 and other dates | Public holidays, decorations; check opening hours |
During major religious days, alcohol sales can be restricted and some shops close. Visitors should check the rules on the day.
Choosing by priority
- Comfort first: Go in December or January for the best weather, and book early.
- Lowest prices: Choose the rainy season (June to October), avoiding the peak holiday weeks.
- Festival lovers: Pick Songkran for a lively street celebration, or Loy Krathong for a calm, visual evening along the water.
- Fewer crowds at major sights: Visit on weekdays, arrive at opening time and avoid public holidays.
- Combining with beaches: Match your Bangkok dates with the best months on the coast. For the national view, see Thailand best time by region, since the Andaman coast and the Gulf islands have different rainy seasons.
What to pack by season
Cool/dry season
- Light, breathable clothing and a thin layer for air-conditioned malls and evening river breezes
- Modest clothes for temples (covered shoulders and knees)
- Comfortable walking shoes that are easy to remove
Hot season
- Lightweight, loose clothes, a hat, sunglasses and sunscreen
- Refillable water bottle
- Electrolyte sachets if you tend to overheat
Rainy season
- Compact umbrella or poncho
- Quick-dry clothes and a spare pair of socks
- Waterproof bag or phone pouch
- Footwear that handles wet pavement
Heat and health tips
- Plan outdoor sights for early morning or late afternoon.
- Drink bottled or filtered water regularly and rest in shade.
- Use sun protection; the UV index can be high even on cloudy days.
- Dress in light fabrics, but stay covered at temples.
- Know the symptoms of heat exhaustion: dizziness, headache and nausea; rest, cool down and seek help if needed.
- Check air quality notices. Bangkok can see higher pollution in some cool-season periods.
Know the emergency numbers: 191 for police, 1669 for medical emergencies, and 1155 for the Tourist Police. See Thailand safety, scams and health for more.
Flooding and strong storms are most likely in the second half of the rainy season. If a weather warning is issued, follow guidance from Thai authorities and your hotel, and avoid low-lying areas and river activities.
Practical planning tips
- Book flexible rates if you travel in the rainy season, so you can adjust.
- Allow buffer time for flights after heavy rain or on festival days.
- Check opening hours for holidays on official pages, including the Grand Palace.
- Use the river and rail for transport when roads flood or jam. See airport to city for arrival options.
- Day trips: Rain can affect outdoor sights such as Ayutthaya and Kanchanaburi; check day trip ideas and weather first.
Sample budget by season (approx.)
| Season | Hotel (mid-range, per night) | Notes |
|---|---|---|
| Nov-Feb | THB 2,000-4,500 | Highest demand; book early |
| Mar-May | THB 1,500-3,500 | Hot; many pool deals |
| Jun-Oct | THB 1,200-3,000 | Lower demand; flexible rates |
Approximate and indicative only, as of 2026. Check the current price on hotel or booking pages.
FAQ
What is the best month to visit Bangkok?
December and January are usually the most comfortable. They are also the busiest, so book early.
Is Bangkok worth visiting in the rainy season?
Yes. Rain often comes in short bursts, the city is less crowded and hotels can be cheaper. Plan indoor backups and allow extra travel time.
When is Songkran?
Songkran is usually celebrated from about 13 to 15 April, with variations by district. Confirm the dates and local events on official tourism pages.
What is the hottest month?
April is often the hottest, though March and May can also be very hot.
Does Bangkok flood?
Parts of the city can flood during heavy rain, particularly in the late rainy season. Major tourist areas are generally usable, but check forecasts and local advice.
Should I avoid Loy Krathong crowds?
You do not have to. River areas become crowded, so go early, or choose a quieter neighbourhood to join the tradition.
Official sources and further reading
Prices, schedules and entry rules change. Figures here are approximate as of 2026; always confirm on the official or operator page before you book. Spotted something out of date? Tell us.
