Thailand Bangkok Weather in April — Climate Guide
April in Bangkok is Below Average
April is Below Average for Bangkok.
April is Bangkok's hottest month — daily highs 36-38°C / 97-100°F, evening lows still 26°C / 79°F. Heat exhaustion is a genuine risk. The full April experience requires either embracing it or strategically planning indoor time.
Songkran (April 13-15) is the national Thai New Year water festival. Khao San Road, Silom, and most major intersections become full-on water battles. Locals and tourists alike spray each other with water guns, water buckets, and from passing pickup trucks. Plan to either embrace it (waterproof bag for phone, swimwear-tier clothes) or completely avoid Bangkok these dates.
Travel score
Bangkok April Weather Stats
Avg High
36°C
Avg Low
26°C
Rainy Days
5
65mm total
Sunshine
8h
Daily avg
Humidity
70%
Humid
UV Index
11
Extreme
Wind
13 km/h
Gusts 24
Crowds
Busy
At attractions
April Sunrise & Sunset
Air Quality
PM2.5
70 μg/m³
PM10
100 μg/m³
Status
Unhealthy for Sensitive
Feels-Like Temperature & Wind
Feels like
Daytime
43°C
Nighttime
27°C
Humidity and wind affect how the actual temperature feels.
Wind
13 km/h
Max gust 24 km/h
Activities Recommended for April
April Travel Pros & Cons
Pros
- Songkran water festival — once-in-a-lifetime cultural experience
- Pre-Songkran hotel prices soften 20-30%
- Pre-monsoon thunderstorms cool the city
Cons
- Hottest month — 36-38°C with 70%+ humidity
- Worst air pollution of the year
- Songkran week sees 50-100% hotel surge
April Events & Festivals
- Songkran Thai New Year (April 13-15) — national water festival
- Hottest month of the year
- Air pollution from burning continues (peaks early April)
Bangkok in April — Full Picture
April is Bangkok's hottest month — daily highs 36-38°C / 97-100°F, evening lows still 26°C / 79°F. Heat exhaustion is a genuine risk. The full April experience requires either embracing it or strategically planning indoor time.
Songkran (April 13-15) is the national Thai New Year water festival. Khao San Road, Silom, and most major intersections become full-on water battles. Locals and tourists alike spray each other with water guns, water buckets, and from passing pickup trucks. Plan to either embrace it (waterproof bag for phone, swimwear-tier clothes) or completely avoid Bangkok these dates.
Hotels around Khao San and Silom raise rates 50-100% for Songkran week. Restaurants close or run special menus. The water battles run from morning until midnight; getting caught in them is essentially unavoidable in central Bangkok during the festival.
April has occasional pre-monsoon thunderstorms — short, dramatic, often welcome cooling. Air pollution from northern Thailand burning peaks early-to-mid April. AQI regularly hits 150-200; sensitive individuals should reconsider Bangkok visits this month.
Upside: hotel prices outside Songkran week soften 20-30%. Pre-Songkran (April 1-12) can be reasonably good value with manageable crowds.
What to Wear & What to Pack
Coolest possible. Songkran water festival means swimwear-tier wear for April 13-15 — bring waterproof bag for phone, quick-dry clothes.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current35°C
25.7°C
7/mo
Summer (Jun·Jul·Aug)
33°C
25.3°C
15.3/mo
Autumn (Sep·Oct·Nov)
32.7°C
24.3°C
13/mo
Winter (Dec·Jan·Feb)
32°C
21.7°C
1.3/mo
Bangkok Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 32° | 21° | 1d·9mm | 9h | 65% | 9 | Very busy | Peak |
| February (Best) | 33° | 23° | 2d·28mm | 9.5h | 65% | 10 | Busy | Peak |
| 35° | 25° | 2d·30mm | 8.5h | 67% | 11 | Moderate | Shoulder | |
| 36° | 26° | 5d·65mm | 8h | 70% | 11 | Busy | Peak | |
| 34° | 26° | 14d·220mm | 7.5h | 75% | 10 | Quiet | Low season | |
| 33° | 26° | 14d·169mm | 7h | 75% | 10 | Quiet | Low season | |
| 33° | 25° | 16d·171mm | 6.5h | 76% | 10 | Quiet | Low season | |
| 33° | 25° | 16d·184mm | 6.5h | 76% | 10 | Quiet | Low season | |
| 33° | 25° | 18d·261mm | 6h | 78% | 10 | Quiet | Low season | |
| 33° | 25° | 16d·197mm | 6.5h | 76% | 10 | Quiet | Low season | |
| November (Best) | 32° | 23° | 5d·49mm | 8h | 70% | 9 | Busy | Shoulder |
| December (Best) | 31° | 21° | 1d·9mm | 9h | 65% | 9 | Very busy | Peak |
View Other Months
Bangkok April Hotel Picks
Frequently Asked Questions
Is April a good time to visit Bangkok?
Bangkok in April is Below Average. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in Bangkok in April?
Bangkok April averages a high of 36°C and a low of 26°C.
Does it rain much in Bangkok in April?
Bangkok April averages 65mm of rainfall over about 5 rainy days.
What should I wear in Bangkok in April?
Coolest possible. Songkran water festival means swimwear-tier wear for April 13-15 — bring waterproof bag for phone, quick-dry clothes.
What time are sunrise and sunset in Bangkok in April?
Bangkok April sunrise is 06:05 and sunset is 18:38, with 12h 33m of daylight.
What's the air quality like in Bangkok in April?
Bangkok April air quality (AQI) averages 140, rated Poor. PM2.5 averages 70μg/m³.
What activities are recommended in Bangkok in April?
In April, Bangkok is great for Songkran water festival (April 13-15), Indoor mall sightseeing, Sky bar evenings (after sunset).
Is April peak season in Bangkok?
Bangkok April crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Bangkok
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.