Koh Samui
Warm all year, wet from September to November and drier from January to April.
- Jan80°27°75°24°Rain on about three days a week.
- Feb81°27°76°24°Rain on about two days a week.
- Mar82°28°77°25°Rain on about two days a week.
- Apr84°29°79°26°Rain on about three days a week.
- May84°29°79°26°Rain on about five days a week.
- Jun84°29°78°26°Rain on about five days a week.
- Jul84°29°78°26°Rain on about five days a week.
- Aug83°28°77°25°Rain on about four days a week.
- Sep82°28°77°25°Rain on about six days a week.
- Oct81°27°76°24°Rain on about six days a week.
- Nov80°27°76°24°Rain on about six days a week.
- Dec80°27°76°24°Rain on about four days a week.
Highs hardly move, between 80°F and 84°F all year, with nights near 77°F. Rain comes in two spells, from May to July and from September to November. January to April is the driest stretch, with rain on about two days a week. Daylight stays near 12 hours all year.Highs hardly move, between 27°C and 29°C all year, with nights near 25°C. Rain comes in two spells, from May to July and from September to November. January to April is the driest stretch, with rain on about two days a week. Daylight stays near 12 hours all year.
Where Koh Samui sits
Asia/Bangkok
- this place
- typical high in Januarytypical high in Februarytypical high in Marchtypical high in Apriltypical high in Maytypical high in Junetypical high in Julytypical high in Augusttypical high in Septembertypical high in Octobertypical high in Novembertypical high in December 40°F4°C95°F35°C
- Latitude
- 9.5°Nnorthern hemisphere
- Above the sea
- 420 mlow-lying
- Sunrise, mid-JanuarySunrise, mid-FebruarySunrise, mid-MarchSunrise, mid-AprilSunrise, mid-MaySunrise, mid-JuneSunrise, mid-JulySunrise, mid-AugustSunrise, mid-SeptemberSunrise, mid-OctoberSunrise, mid-NovemberSunrise, mid-December
- 6:40 AM6:40 AM6:28 AM6:10 AM6:00 AM6:00 AM6:07 AM6:12 AM6:10 AM6:08 AM6:14 AM6:28 AMsets 6:17 PMsets 6:29 PMsets 6:31 PMsets 6:30 PMsets 6:33 PMsets 6:40 PMsets 6:45 PMsets 6:38 PMsets 6:21 PMsets 6:03 PMsets 5:56 PMsets 6:02 PM
- Nearest of ours
- Krabi183 km south-west
The land around Koh Samui, shaded by its typical high in January, the planning map's own layer.The land around Koh Samui, shaded by its typical high in February, the planning map's own layer.The land around Koh Samui, shaded by its typical high in March, the planning map's own layer.The land around Koh Samui, shaded by its typical high in April, the planning map's own layer.The land around Koh Samui, shaded by its typical high in May, the planning map's own layer.The land around Koh Samui, shaded by its typical high in June, the planning map's own layer.The land around Koh Samui, shaded by its typical high in July, the planning map's own layer.The land around Koh Samui, shaded by its typical high in August, the planning map's own layer.The land around Koh Samui, shaded by its typical high in September, the planning map's own layer.The land around Koh Samui, shaded by its typical high in October, the planning map's own layer.The land around Koh Samui, shaded by its typical high in November, the planning map's own layer.The land around Koh Samui, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.
Through the year
week by weekTemperature
Highs from 80°F in December and January to 84°F in April and May.Highs from 27°C in December and January to 29°C in April and May.
Chance of a wet day
Wettest in October (89% of days), driest in February and March (30%).
Cloud cover
Clearest in February (59% cover), cloudiest in June and July (80%).
Daylight
About 12 hours all year, as near the equator.
Month by month
°F°C| Month | Typical low to high | Wet days a week | Cloud | Daylight |
|---|---|---|---|---|
| JanuaryAt its best | 3 days | 64% | 11h 38m | |
| FebruaryAt its best | 2 days | 59% | 11h 49m | |
| MarchAt its best | 2 days | 63% | 12h 04m | |
| April | 3 days | 75% | 12h 20m | |
| MayRainy season | 5 days | 80% | 12h 33m | |
| JuneRainy season | 5 days | 80% | 12h 40m | |
| JulyRainy season | 5 days | 80% | 12h 37m | |
| August | 4 days | 79% | 12h 25m | |
| SeptemberRainy season | 6 days | 79% | 12h 09m | |
| OctoberRainy season | 6 days | 80% | 11h 54m | |
| NovemberRainy season | 6 days | 76% | 11h 41m | |
| December | 4 days | 68% | 11h 35m |
When is the best time to visit Koh Samui?
The best months are January to March: highs near 81°F, nights near 76°F, and rain on about two days a week.The best months are January to March: highs near 27°C, nights near 24°C, and rain on about two days a week.
How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.
Questions
What is the warmest month in Koh Samui?
April and May, with highs near 84°F and lows near 79°F. The coolest are December and January, with highs near 80°F.April and May, with highs near 29°C and lows near 26°C. The coolest are December and January, with highs near 27°C.
When does it rain most in Koh Samui?
October, with rain on about six days a week. February and March are the driest, with rain on about two days a week.
How long are the days in Koh Samui?
About 12 hours all year, as near the equator.
When are the skies clearest in Koh Samui?
February, when cloud covers about 59% of the sky on average. June and July are the cloudiest, at about 80%.
Places with a year like Koh Samui's
by their highs, lows and wet days- KandholhudhooMaldives
- Khánh HòaVietnam
- El NidoPhilippines
- Laucala IslandFijisix months apart
- LangkawiMalaysia
Their highs, lows, wet days and cloud run closest to Koh Samui's through the year, one place a country. “Six months apart”: their winter is Koh Samui's summer.