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Wat Arun temple on the Chao Phraya River, Bangkok

Bangkok

Thailand

Two coasts, two monsoons and a peak that falls in the UK winter

Photo: Rolf Heinrich, Köln · CC BY 3.0 via Wikimedia Commons

Thailand's seasons are more complicated than one calendar can show. Bangkok and the Andaman coast peak from November to February; the Gulf coast runs on a different timetable, which changes where you should go each month.

12-month view

Season calendar

JanuaryBusy season

Cool-dry season peak; best weather for Bangkok and Andaman beaches (Phuket, Krabi). Highest prices.

Busy seasonSweet spotQuiet seasonEngland & Wales school holiday, typical price premium

Premiums are indicative ranges versus the surrounding non-holiday weeks. Tap or click any month for the exact dates. Term dates vary slightly by council; see our data sources.

Our verdict

November and early December are the best-value window for Bangkok and the Andaman coast: the dry season has arrived but Christmas pricing has not. For a summer trip, the Gulf coast in July and August offers off-season prices with mostly dry weather.

Right now

Is it a good time to go?

Off-season — best prices of the year
Great value, some weather trade-off. Check conditions for this destination before booking.
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How the year plays out

Seasons explained

Thailand has three broad seasons: cool and dry from November to February, hot from March to May, and wet from June to October. The cool-dry season is peak for Bangkok, Chiang Mai and the Andaman coast (Phuket, Krabi, Koh Lanta), with Christmas and New Year the most expensive fortnight of the year. Prices and crowds ease in March, though the heat builds and Songkran in mid-April brings a short domestic spike.

The wet season is where the coast split matters. The southwest monsoon hits the Andaman coast from May to October, but the Gulf coast (Koh Samui, Koh Phangan, Koh Tao) stays comparatively dry until its own wet season arrives in October and November. That means June to September, which is off-season on paper and priced accordingly, can still deliver a good beach holiday if you pick the Gulf side. Rain in Bangkok itself tends to come as short, heavy afternoon bursts rather than all-day washouts.

For UK families

Bangkok in the school holidays

Thailand is a long-haul destination that suits the longer UK breaks. The summer holidays are off-season on the Andaman coast but the Gulf islands are largely dry, and flights and hotels are far cheaper than at the Christmas peak; this is one of the few long-haul beach options where the UK summer break can be good value. February half term hits the cool-dry peak, with excellent weather but the highest prices of the year after Christmas. October half term is the wettest stretch nationwide and the Gulf coast is entering its own monsoon, so it is the weakest fit. Easter falls in the hot season, with dry beaches and softening prices.

Choose your region on the season calendar above to see the exact term dates and typical premium for each break.

Historical data

Typical temperatures

Monthly temperature: average daily low, high, and midpoint
MonthAverage lowAverage highAverage
Jan24°C32.9°C28.5°C
Feb25.6°C33.8°C29.7°C
Mar27.2°C34.8°C31°C
Apr27.9°C36°C31.9°C
May27.3°C35.7°C31.5°C
Jun26.9°C34.8°C30.8°C
Jul26.4°C33.8°C30.1°C
Aug26.3°C33.7°C30°C
Sep25.8°C33.2°C29.5°C
Oct25.7°C33.1°C29.4°C
Nov25.4°C33.1°C29.3°C
Dec24.1°C32.6°C28.4°C
Min/Max rangeAverage

Ten-year monthly averages of daily highs and lows from the Bangkok weather station (7.5 km away), via Meteostat. Window 20162026.

Chance of rain

Average number of rainy days per month
MonthRainy days
Jan1.8
Feb4.6
Mar7
Apr11.6
May23.8
Jun24.3
Jul27.4
Aug27.1
Sep28
Oct24.2
Nov9.8
Dec2

Average number of days per month with at least 1mm of rainfall. From NASA POWER satellite-derived data. Window 20162026.

Quick answers

Frequently asked

When is the best time to visit Bangkok?
November and early December are the best-value window for Bangkok and the Andaman coast: the dry season has arrived but Christmas pricing has not. For a summer trip, the Gulf coast in July and August offers off-season prices with mostly dry weather.
When is Bangkok most expensive?
Our price index puts January, February and December at the top of the year for Bangkok. The cheapest months on the same index are June, July and September. The season calendar above shows the month-by-month picture, with UK school holiday premiums marked.
Is Bangkok a good choice for the UK school holidays?
Thailand is a long-haul destination that suits the longer UK breaks. The summer holidays are off-season on the Andaman coast but the Gulf islands are largely dry, and flights and hotels are far cheaper than at the Christmas peak; this is one of the few long-haul beach options where the UK summer break can be good value. February half term hits the cool-dry peak, with excellent weather but the highest prices of the year after Christmas. October half term is the wettest stretch nationwide and the Gulf coast is entering its own monsoon, so it is the weakest fit. Easter falls in the hot season, with dry beaches and softening prices.
Does it rain a lot in Bangkok?
On average, Bangkok sees the fewest rainy days in January (around 2 days with rain) and the most in September (around 28 days). See the rainfall chart above for the full year, and our data sources page for how this is measured.
Are there festivals or events that affect prices in Bangkok?
Yes — Bangkok hosts Songkran in April, and Loy Krathong in November, which can push prices above the usual seasonal pattern that month. Exact dates vary by year; check the season calendar above and confirm against the event's own listing before booking.

Keep exploring

More long-haul destinations

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