Thailand in December

December is one of Thailand's best months (rank 3 of 12): its 19 destinations average 81/100, led by Hua Hin at 92 — 33°C and 4 rainy days — while Khao Lak is warmer at 37°C and scores 83.

#3 of 12 months for Thailand · 19 destinations · updated September 2026 · climate normals from ERA5 reanalysis

🇹🇭 Thailand, month by month

81/100 in December

Where in Thailand in December

#	Place	Type	Feels-like high	Rain	Comfort	At its best
1	Hua Hin	Beach	33°C	19 mm · 4 days	92 tier S	Yes
2	Ko Chang	Island	35°C	26 mm · 5 days	92 tier S	Yes
3	Pattaya	Beach	33°C	21 mm · 4 days	92 tier S	Yes
4	Chiang Rai	City	30°C	23 mm · 4 days	87 tier A	Yes
5	Pai	Trekking hub	29°C	13 mm · 3 days	85 tier A	Yes
6	Chiang Mai	City	33°C	8 mm · 1 day	84 tier A	Yes
7	Khao Lak	Beach	37°C	99 mm · 15 days	83 tier A	—
8	Ko Phi Phi	Island	32°C	110 mm · 13 days	82 tier A	—
9	Phuket	Beach	37°C	98 mm · 12 days	81 tier A	—
10	Ayutthaya	City	34°C	13 mm · 3 days	80 tier A	Yes
11	Kanchanaburi	City	34°C	9 mm · 2 days	80 tier A	Yes
12	Ko Lanta	Island	36°C	128 mm · 14 days	80 tier A	—
13	Krabi	Beach	36°C	140 mm · 15 days	79 tier B	—
14	Ko Lipe	Island	33°C	151 mm · 15 days	76 tier B	—
15	Bangkok	City	35°C	17 mm · 2 days	75 tier B	Yes
16	Ko Pha Ngan	Island	32°C	203 mm · 14 days	73 tier B	—
17	Ko Tao	Island	29°C	193 mm · 13 days	73 tier B	—
18	Ko Samui	Island	33°C	221 mm · 16 days	70 tier B	—
19	Khao Sok	National park	34°C	121 mm · 15 days	69 tier C	Yes

Comfort is SeasonMap's 0–100 score; each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. "At its best" means December is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.

What's on in Thailand in December

Christmas and New Year peak · Pattaya and 15 more places · 18 Dec – 5 Jan
Wild Himalayan cherry on the hills · Chiang Mai · 20 Dec – 31 Jan (usually)
Phuket King's Cup Regatta · Phuket · 5–12 Dec
Full Moon Party · Ko Pha Ngan · 1 Jan – 31 Dec
Morning mist on Cheow Lan · Khao Sok · 1 Nov – 15 Feb (usually)
Wreck and reef diving season · Ko Chang · 1 Nov – 30 Apr (usually)
Sea of mist at Phu Chi Fa · Chiang Rai · 1 Nov – 15 Feb (usually)
Wild Himalayan cherry · Chiang Rai · 20 Dec – 15 Feb (usually)

Seasons in force

Dry season · 14 places Fog season · 3 places Monsoon · 3 places

Peak crowds at 10 of Thailand's 12 well-known places this month.

Better months for Thailand

January · 84/100 February · 84/100 March · 78/100 Weakest: September · 57/100

← Thailand in November Thailand in January →Best time to visit Thailand, month by month Compare: Hua Hin vs Ko Chang in December