Surat Thani, Thailand
Ko Samui
Ko Samui is a town in Surat Thani, Thailand, close to the sea. It has a population of about 68,994 (2020). The climate is classified as tropical monsoon (Köppen Am), with .
Now28°C
Best timeJan–Mar
Population68,994
Local time21:48
9.54° N, 99.94° EElevation 8 mUTC+7 · Indochina Time
October: high / low28° / 26°
Rain this month315mm
Sea this month29°
Best timeJan–Mar
Best: Jan–Mar. Warmth, sunshine and dry days, month by month.
Ko Samui at a glance
Sunrise · sunset06:09 · 18:0111 h 52 min of daylightThe moon tonightWaxing gibbous85% · Moonrise 15:47Next holiday23 OctoberHM King Chulalongkorn Memorial DayNext eclipse21 Feb 2027Penumbral lunar eclipse
Best time to visitJan–Mar
The months with the highest weather score
Warmest month29°C
Average high in June
Coolest month26°C
Average low in January
Wettest monthJuly
135 mm of rain
Driest monthFebruary
47 mm of rain
Warmest sea30°C
May
Weather in Ko Samui
Now and the next ten days. The 14 and 30-day outlooks are one click away.
28°C
Today hour by hourCloudy · wind 2 km/h · humidity 82%
Today22 Oct31°28°1.2 mm
Fri23 Oct31°27°2.6 mm
Sat24 Oct30°25°7.2 mm
Sun25 Oct29°25°12.9 mm
Mon26 Oct28°25°9.6 mm
Tue27 Oct27°24°33.8 mm
Wed28 Oct26°25°38.5 mm
Thu29 Oct28°25°8.3 mm
Fri30 Oct27°25°15.1 mm
Sat31 Oct28°26°5.9 mm
When to go to Ko Samui
Each month's weather score (warmth, sun, dry days) with its temperatures and rain.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Score | 61 | 75 | 58 | 48 | 38 | 34 | 36 | 36 | 38 | 42 | 48 | 56 |
| High | 27° | 27° | 28° | 29° | 29° | 29° | 29° | 29° | 28° | 28° | 28° | 27° |
| Low | 26° | 26° | 27° | 27° | 27° | 27° | 27° | 27° | 26° | 26° | 26° | 26° |
| Rain (mm) | 72 | 47 | 69 | 76 | 175 | 142 | 135 | 132 | 150 | 315 | 464 | 179 |
| Wet days | 13 | 6 | 12 | 17 | 29 | 28 | 30 | 29 | 29 | 29 | 25 | 19 |
| Sea | 28° | 28° | 29° | 30° | 30° | 30° | 30° | 29° | 29° | 29° | 29° | 28° |
What's on in Ko Samui
Concerts, football matches, the public holidays ahead and the town's festivals through the year.
Public holidays
23OctHM King Chulalongkorn Memorial DayNational
Fri5DecHM King Bhumibol Adulyadej the Great's Birthday · National Day · National Father's DayNational
Sat7DecHM King Bhumibol Adulyadej the Great's Birthday (in lieu) · National Day (in lieu) · National Father's Day (in lieu)National
Mon10DecConstitution DayNational
ThuMonuments and museums in Ko Samui
More museums: Coconut Museum · Koko galery · Samui Cultural Center and Fine Art of South East Asia
Outdoors around Ko Samui
Hiking routes from the town, and what there is to do within 15 km: huts, viewpoints, climbing, camping, ski areas and dive sites.
Santiburi GolfclubGolf courses
5.1 kmSea View GazeboViewpoints · 4 m
7.8 kmPra Putta Teepangkorn (Big Budda)Viewpoints
8.6 kmPink Elephant Water ParkWater parks
8.6 kmSafari & Elephant TrekZoos
9.6 kmFunny Day Safari (Elephant riding)Zoos
11 kmDive site
0.2 kmSamui Diving ResortDive site
11 kmMember DivingDive site
13 kmThai Scuba DiveDive site
14 kmNature around Ko Samui
Wildlife in October
The birds and mammals of Thailand seen most this month, compared with the rest of their year.
The sky over Ko Samui
Towns and villages around Ko Samui
Each with its own page: weather, climate and the best time to visit.
Ban Ta Kian1.7 kmBan Hin Lat1.9 kmBan Bang Makham2.2 kmBan Laem Din2.5 kmBan Lipa Yai2.7 kmBan Thong Phlu3.5 kmBan Nai Ban3.9 kmLaem Yai Beach4.5 kmBan Laem Noi4.6 kmBan Lipa Noi4.7 kmBan Chon Khram5 kmBan Bang Po5.1 kmBan Krok Phan Ra5.3 kmBan Na We5.8 kmBan Thung5.9 kmBan Thong Yang6 kmBan Tai6.5 kmBan Thung6.6 kmBan Sa Ket6.6 kmBan Na Sai6.7 kmBan Don Sai6.9 kmBan Khao Phaeng7.2 kmBan Na Phra Lan7.3 kmBan Nara7.5 kmBan Khok Kruat7.5 kmBan Chai Thale8 kmBan Wat Thale8.3 kmBan Khok Khanun8.3 kmBan Taling Ngam8.8 kmBan Mae Nam9.1 kmBan Ao Pho Lai9.7 kmBan Na Mueang11 kmBan Bo Phut11 kmBan Hua Wiang11 kmBan Suan Turian11 kmBan Na Phon12 kmBan Phangka12 kmBan Chaweng Noi12 kmBan Thong Tanot12 kmBan Tapho12 kmBan Ko Khwan13 kmTaling-Ngam,Koh Samui13 kmBan Thung13 kmBan Thale13 kmBan Thong Krut13 kmBan Bang Rak13 kmBan Bang Kao13 kmBan Chaweng Yai13 kmBan Maret13 kmBan Mai13 kmBan Ko Fan13 kmBan Hua Thanon14 kmChaweng Beach14 kmBan Laem So14 kmBan Na Khai14 kmBan Lamai14 kmBan Tin Tha14 kmBan Plai Laem15 km
Ko Samui from above
Around Ko Samui16 places to see, do and reach nearby
Nam Tok Hin Lat, Surat ThaniNature3.8 kmLat Wanon WaterfallNature4.7 kmTan Rua WaterfallNature6.1 kmTa Nim WaterfallNature8.7 kmNam Tok Na MueangNature9.4 kmKhao Yai WaterfallNature11 kmเกาะสมุยNature8.1 kmNathonNature0.1 kmDive siteDive site0.2 kmSamui Diving ResortDive site11 kmMember DivingDive site13 kmSecret Buddha GardenMuseum8.7 kmLomprayah Nathon PierFerry port0.4 kmNightboat Nathon PierFerry port0.5 kmDon SakPlace36 kmKo Pha-nganPlace27 km
Getting to Ko Samui
Samui International AirportUSM
14 kmSurat Thani AirportURT
99 kmNakhon Si Thammarat AirportNST
111 kmLomprayah Nathon PierLomprayah · ท่าเรือเกาะพะงัน
0.4 kmNightboat Nathon Pierท่าเทียบเรือสุราษฎร์ธานี
0.5 kmPlaces near Ko Samui
Places with a climate like Ko Samui
Matched month by month on temperature, rain and sunshine.
Frequently asked questions
When is the best time to visit Ko Samui?
Based on 30-year climate normals, January, February and March offer the best balance of comfortable temperatures, low rainfall and sunshine in Ko Samui.
What is the hottest month in Ko Samui?
June is the warmest month, with average highs of 29°C and lows of 27°C.
What is the coldest month in Ko Samui?
January is the coldest month, with average highs of 27°C and lows of 26°C.
What is the rainiest month in Ko Samui?
July is the wettest month with about 135 mm of precipitation on 30 wet days.
How warm is the sea near Ko Samui?
The sea is warmest in May at about 30°C and coolest in January at about 28°C.