When is the best time to visit Thailand?

December to February. Across Thailand's 19 destinations, January averages 84/100 for climate comfort with mean highs of 30.4°C and 56 mm of rain.

What is the worst month to visit Thailand?

September, averaging 57/100 — mean highs of 31°C and 274 mm of rain across the country's destinations.

What is the hottest month in Thailand?

April, with mean daily highs of 33.4°C averaged across 19 destinations.

What is the wettest month in Thailand?

September, averaging 274 mm of rain.

Best time to visit Thailand

The best time to visit Thailand is December to February, when its 19 destinations average 84/100 for climate comfort — September is the weakest month, at 57/100.

Updated September 2026 · averaged over 19 Thailand destinations · climate normals from ERA5 reanalysis

🇹🇭 Thailand, month by month

best January

Average comfort out of 100 · open a month for where to go in it

Thailand climate comfort by month

Month	Comfort	Avg high	Rain	Pick of the month
January	84	30.4°C	56 mm	Hua Hin 90
February	84	31.6°C	31 mm	Ko Lanta 92
March	78	32.9°C	44 mm	Ko Tao 91
April	69	33.4°C	110 mm	Ko Tao 84
May	61	32.9°C	213 mm	Ko Samui 77
June	67	31.9°C	188 mm	Ko Samui 83
July	63	31.4°C	224 mm	Ko Lipe 81
August	63	31.2°C	230 mm	Ko Samui 82
September	57	31°C	274 mm	Ko Samui 73
October	59	30.7°C	264 mm	Pai 68
November	68	30.5°C	182 mm	Pattaya 83
December	81	30.1°C	85 mm	Hua Hin 92

Comfort is SeasonMap's 0–100 score, averaged across every Thailand destination in the dataset. Each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. Averages from ERA5 reanalysis normals, not forecasts.

All 19 destinations in Thailand

Thailand — FAQ

When is the best time to visit Thailand?: December to February. Across Thailand's 19 destinations, January averages 84/100 for climate comfort with mean highs of 30.4°C and 56 mm of rain.
What is the worst month to visit Thailand?: September, averaging 57/100 — mean highs of 31°C and 274 mm of rain across the country's destinations.
What is the hottest month in Thailand?: April, with mean daily highs of 33.4°C averaged across 19 destinations.
What is the wettest month in Thailand?: September, averaging 274 mm of rain.