When is the best time to visit Thailand?

The best time to visit depends on where you go. Ayutthaya: December & January; Bangkok: December & January; Chiang Mai: February & January; Chiang Rai: February & January; Hua Hin: April & January; Kanchanaburi: January & December.

Which month is best overall in Thailand?

Averaged across our 18 destinations in Thailand, the strongest months are December, January. Individual places can shift a month or two earlier or later — each destination page lists its own peak.

How are the Thailand travel scores calculated?

Every city is rated 0-10 per month using ERA5 climate normals - temperature, precipitation, humidity, daylight, and days with 6+ hours of sunshine.

Best Time to Visit Thailand: Weather by Month

01 · Thailand

About Thailand

Thailand runs from the northern mountains down the Chao Phraya plain to the Gulf of Thailand and the Andaman coast. Bangkok holds palaces and temples, Chiang Mai anchors the northern hills, Ayutthaya and Sukhothai cover the central plains, and Phuket, Krabi and the Phi Phi islands are the southern beaches. The cool season from November to February suits most of the country, the hot season builds from March to May, and the monsoon reaches the two coasts at different times.

Did you know?

Thailand is the only country in Southeast Asia that was never colonised by a European power.
The country was renamed Thailand in 1939 and briefly returned to the name Siam between 1945 and 1948.
Thailand has more than a thousand islands in the Andaman Sea and the Gulf of Thailand, from Phuket to tiny dive-only islets.

Weather

Thailand: weather by month

Warmest month: April (32°C). Wettest: September (344 mm). Best overall score: December (8.3/10).

Month	Avg temp	Rain	Sunny days	Score
January	27°C	7 mm	22	8.0/10
February	29°C	35 mm	21	7.0/10
March	31°C	37 mm	26	6.6/10
April	32°C	41 mm	27	6.5/10
May	30°C	183 mm	24	3.3/10
June	29°C	130 mm	23	4.3/10
July	28°C	230 mm	20	3.3/10
August	28°C	244 mm	23	3.3/10
September	28°C	344 mm	18	3.1/10
October	27°C	208 mm	18	3.5/10
November	26°C	57 mm	18	6.5/10
December	25°C	5 mm	20	8.3/10

Travel Tips

01Best time & timing: Climate scores swing from 3.1/10 in September to 8.3/10 in December; the safest picks are December, January, February.
02Weather & what to pack: Expect around 25°C and 5 mm of rain in December, with roughly 20 bright days. Pack light clothing, a hat and real sun protection.
03Crowds & value: Peak-season pricing concentrates in December. For better value, February scores 7.0/10 at lower-season rates.

Things to do in Thailand

Thailand. Live activities and tours from GetYourGuide, matched to this destination.

FAQ

Frequently asked

When is the best time to visit Thailand?: The best time to visit depends on where you go. Ayutthaya: December & January; Bangkok: December & January; Chiang Mai: February & January; Chiang Rai: February & January; Hua Hin: April & January; Kanchanaburi: January & December.
Which month is best overall in Thailand?: Averaged across our 18 destinations in Thailand, the strongest months are December, January. Individual places can shift a month or two earlier or later — each destination page lists its own peak.
Which cities in Thailand does bestime.to cover?: We currently score 18 destinations in Thailand: Ayutthaya, Bangkok, Chiang Mai, Chiang Rai, Hua Hin, Kanchanaburi, Khao Sok National Park, Koh Lanta, Koh Lipe, Koh Phi Phi, +8 more.
How are the Thailand travel scores calculated?: Every city is rated 0-10 per month using ERA5 climate normals - temperature, precipitation, humidity, daylight, and days with 6+ hours of sunshine.

Climate data: Open-Meteo ERA5 historical archive, the five most recent complete years (2021–2025). Scores are monthly averages for that window, not forecasts, and short-window precipitation can differ from longer-term normals. “Sunny days” count days with at least 6 hours of measured sunshine — they are not dry days.

Curated in Thailand