Measured, not vibes
Best Time to Visit Bangkok
By measured weather comfort, the top months for Bangkok are December, January, November — and RouteVerdict's editorial pick, which also weighs crowds and prices, is January, February, November, December. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at Bangkok (12 m elevation).
Month by month
Bangkok weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | 31.9°C / 89°F | 2.3 | 59 | Best |
| February | 32.5°C / 91°F | 5.2 | 51 | |
| March | 33.3°C / 92°F | 7.5 | 44 | Shoulder |
| April | 34.1°C / 93°F | 10 | 37 | |
| May | 33.6°C / 92°F | 16.3 | 34 | |
| June | 32.9°C / 91°F | 20.2 | 36 | |
| July | 31.7°C / 89°F | 22.2 | 41 | |
| August | 31.7°C / 89°F | 22.8 | 41 | |
| September | 30.9°C / 88°F | 23.3 | 44 | |
| October | 30.6°C / 87°F | 18.5 | 46 | Shoulder |
| November | 31.4°C / 89°F | 10 | 52 | Best |
| December | 31.3°C / 88°F | 3 | 61 | Best |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
What the seasons are actually like
Traveling to Bangkok month by month
Bangkok runs on humidity and rainfall more than temperature — highs barely move across the year, from 30.6°C in October to 34.1°C in April, so the real variable is how wet it is. The dry cool season from November through February brings wet-day counts down to 2.3–10 days a month and comfort scores of 51.3–61.4, the most livable stretch for walking temples and markets outdoors. From May through September the wet season sets in hard, with 16.3–23.3 wet days a month and comfort scores of 33.7–44.2 — expect short, heavy afternoon downpours rather than all-day rain, but plan indoor backup for early afternoons. October and March are the transition months, still humid but with rainfall easing off.
FAQ
Bangkok timing questions
What is the best month to visit Bangkok?
By measured weather comfort (ERA5 2020–2024), the top months are December, January, and November, with December scoring highest. RouteVerdict's editorial pick is January, February, November, and December, which also weighs crowds, prices, and events.
What is the hottest month in Bangkok?
April, with an average daily high of 34.1°C (93°F).
What is the rainiest month in Bangkok?
September, averaging 23.3 days with at least 1 mm of precipitation.
When is shoulder season in Bangkok?
October and March — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.
Is Bangkok too rainy to visit from June to August?
It's Bangkok's wettest stretch — June averages 20.2 wet days and August 22.8 — but downpours are typically short, heavy, and afternoon-only rather than constant. Comfort scores (35.5–40.7) are lower than dry season, not unbearable.
What's the best time to avoid both rain and extreme heat in Bangkok?
December, with an average high of 31.3°C, only 3 wet days, and Bangkok's best comfort score of the year at 61.4 — the closest the city gets to a genuinely comfortable outdoor month.