Thailand · 30-year monthly climate averages
Based on 30 years of climate data, the most comfortable months to visit Bangkok are January, February and December, when daytime temperatures are agreeable and rainfall is relatively low.
Bangkok sees its warmest weather in April, when daytime highs average around 36°C, and its coolest in December (around 32°C).
Annual precipitation totals roughly 1702mm — September is typically the wettest month (~336mm) and December the driest (~12mm).
A distinctly wetter period runs from May to October — worth planning around if you prefer dry days.
March is the sunniest month, with about 234 hours of sunshine.
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
Daily forecast highs vs the 30-year normal — last 61 days
Each bar is one day: orange above normal, blue below.
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 33° / 23°C | 24mm | 👍 Good |
| February | 34° / 25°C | 21mm | 👍 Good |
| March | 35° / 26°C | 51mm | 🤔 Fair |
| April | 36° / 27°C | 93mm | ⚠️ Challenging |
| May | 35° / 27°C | 217mm | ⚠️ Challenging |
| June | 34° / 26°C | 199mm | ⚠️ Challenging |
| July | 34° / 26°C | 190mm | ⚠️ Challenging |
| August | 33° / 26°C | 227mm | ⚠️ Challenging |
| September | 33° / 25°C | 336mm | ⚠️ Challenging |
| October | 33° / 25°C | 289mm | ⚠️ Challenging |
| November | 33° / 25°C | 45mm | 👍 Good |
| December | 32° / 23°C | 12mm | 👍 Good |
January in Bangkok is hot, with average daytime highs around 33°C (91°F) and nighttime lows near 23°C (74°F). Expect roughly 24mm of precipitation spread over about 2 rainy days, with little rainfall.
☀️ About 216 hours of sunshine over the month (~7h/day).
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle
February in Bangkok is hot, with average daytime highs around 34°C (93°F) and nighttime lows near 25°C (77°F). Expect roughly 21mm of precipitation spread over about 2 rainy days, with little rainfall.
☀️ About 216 hours of sunshine over the month (~7h/day).
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle
March in Bangkok is hot, with average daytime highs around 35°C (94°F) and nighttime lows near 26°C (80°F). Expect roughly 51mm of precipitation spread over about 3 rainy days, with little rainfall.
☀️ About 234 hours of sunshine over the month (~8h/day).
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle
April in Bangkok is extremely hot, with average daytime highs around 36°C (96°F) and nighttime lows near 27°C (81°F). Expect roughly 93mm of precipitation spread over about 5 rainy days, with a moderate amount of rain.
☀️ About 227 hours of sunshine over the month (~8h/day).
🎒 What to pack — very light, loose clothing · high-SPF sunscreen and a sun hat · plan activities for early morning or evening
May in Bangkok is extremely hot, with average daytime highs around 35°C (95°F) and nighttime lows near 27°C (80°F). Expect roughly 217mm of precipitation spread over about 12 rainy days, and heavy rainfall is common — this is peak wet season territory.
☀️ About 196 hours of sunshine over the month (~7h/day).
🎒 What to pack — very light, loose clothing · high-SPF sunscreen and a sun hat · plan activities for early morning or evening · compact umbrella or rain jacket
June in Bangkok is hot, with average daytime highs around 34°C (93°F) and nighttime lows near 26°C (80°F). Expect roughly 199mm of precipitation spread over about 13 rainy days, and heavy rainfall is common — this is peak wet season territory.
☀️ About 158 hours of sunshine over the month (~5h/day).
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
July in Bangkok is hot, with average daytime highs around 34°C (92°F) and nighttime lows near 26°C (79°F). Expect roughly 190mm of precipitation spread over about 14 rainy days, and this is one of the wetter months.
☀️ About 141 hours of sunshine over the month (~5h/day).
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
August in Bangkok is hot, with average daytime highs around 33°C (92°F) and nighttime lows near 26°C (79°F). Expect roughly 227mm of precipitation spread over about 16 rainy days, and heavy rainfall is common — this is peak wet season territory.
☀️ About 129 hours of sunshine over the month (~4h/day).
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
September in Bangkok is hot, with average daytime highs around 33°C (92°F) and nighttime lows near 25°C (78°F). Expect roughly 336mm of precipitation spread over about 18 rainy days, and heavy rainfall is common — this is peak wet season territory.
☀️ About 130 hours of sunshine over the month (~4h/day).
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
October in Bangkok is hot, with average daytime highs around 33°C (91°F) and nighttime lows near 25°C (77°F). Expect roughly 289mm of precipitation spread over about 14 rainy days, and heavy rainfall is common — this is peak wet season territory.
☀️ About 158 hours of sunshine over the month (~5h/day).
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle · compact umbrella or rain jacket
November in Bangkok is hot, with average daytime highs around 33°C (92°F) and nighttime lows near 25°C (76°F). Expect roughly 45mm of precipitation spread over about 4 rainy days, with little rainfall.
☀️ About 195 hours of sunshine over the month (~6h/day).
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle
December in Bangkok is hot, with average daytime highs around 32°C (90°F) and nighttime lows near 23°C (74°F). Expect roughly 12mm of precipitation spread over about 1 rainy days, and rain is rare.
☀️ About 214 hours of sunshine over the month (~7h/day).
🎒 What to pack — breathable summer clothing · sunscreen, hat and sunglasses · refillable water bottle