AI-generatedKo Chang at a glance
- Best time
- Nov – Feb
- Warmest month
- Apr · 32°
- Warmest sea
- May · 30.6°
- Sunshine a year
- 2,100 h
- Rain a year
- 3,174 mm
- Climate
- Tropical
- Time zone
- UTC+7
- Elevation
- 21 m
Climate in Ko Chang
Ko Chang has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. April is the warmest month with average highs of 32 °C, while September is the coolest at 30 °C. With around 2,100 hours of sunshine a year, Ko Chang is moderately sunny; February is the sunniest month with 7.8 hours a day.
Holiday weather through the year
Best time to visit Ko Chang
The best time to visit Ko Chang is from November to February. For a beach holiday – sea from 21 °C, warm and mostly dry – go from November to February. The rainy season is from May to September; the wettest month is July with 557 mm.
Ko Chang through the seasons
How the weather changes over the seasons, with averages for each.
Ko Chang in the dry season
Oct – Apr
Good
- 31–32 °C by day
- Sea 29 °C
- 7.1 h of sun a day
- 103 rainy days in all
Ko Chang in the rainy season
May – Sep
Good
- 30–32 °C by day
- Sea 30 °C
- 3.9 h of sun a day
- 149 rainy days in all
Which month for what?
Beach & swimming
Nov – Feb
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
May – Sep
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Ko Chang for you.
Your best months: December – February
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Good
Best time to visit: November – February
Where to go in OctoberSea temperature in October
A typical day in October
- Morning, 08:00: about 27°
- Midday, 13:00: about 31°
- Afternoon, 16:00: about 30°
- Evening, 20:00: about 27°
- Night, 23:00: about 26°
06:0017:53
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:47–06:28 · evening 17:24–18:06
- Blue hour
- Morning 05:39–05:47 · evening 18:06–18:14
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Ko Chang compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs rise from about 30° at the start of the month to 31° at the end. The days get 0.3 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 30° | 31° |
| Night-time low | 24° | 24° |
| Sea | 29° | 29° |
| Daylight | 12.0 h | 11.7 h |
What is the weather like in Ko Chang in October?
In October, Ko Chang is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 29.4 °C – almost as warm as a bath. Expect around 5.0 hours of sunshine a day. It rains often – on about 25 days, adding up to 302 mm. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a good month for a holiday in Ko Chang.
More details for October
- Daylight
- 11 h 53 min06:00 – 17:53
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 9 km/haverage daily peakAll months
- Cloud cover
- 83 %on averageAll months
- Hot days
- 23 days30 °C or moreAll months
- Time zone
- UTC+7offset from UTC
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %33 %
- Few rainy daysweight 20 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Compare two months in Ko Chang
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
December has the better holiday weather in Ko Chang: score 94 against 67. Daytime highs are about the same. The sea is 1 °C cooler in December. December has 21 fewer rainy days. The sun shines 3 hours longer a day in December.
| Month | October | December |
|---|---|---|
| Holiday weather score | 67 | 94better |
| Daytime high | 31° | 31° |
| Night-time low | 24° | 23° |
| Sea | 29.4° | 28.4° |
| Sunshine | 5.0 h | 7.6 hbetter |
| Rainy days | 25 | 4better |
| Rainfall | 302 mm | 21 mmbetter |
| Muggy days | 31 | 21better |
Based on the climate averages 1996–2025.
Ko Chang month by month
The typical weather for every month at a glance.
89January31° · Sea 28° · 7.7 h
In January, Ko Chang is hot: daytime highs average 31 °C, and even at night it stays warm at around 23 °C. The sea averages 28.1 °C – lovely and warm for swimming. The sun shines for around 7.7 hours a day. Rain falls on about 7 days, adding up to 38 mm. On about 26 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is an excellent month for a holiday in Ko Chang.
Ko Chang in January84February31° · Sea 28° · 7.8 h
In February, Ko Chang is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 28.3 °C – lovely and warm for swimming. The sun shines for around 7.8 hours a day. Rain is frequent, with about 11 rainy days and 52 mm in total. On about 25 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, February is an excellent month for a holiday in Ko Chang.
Ko Chang in February70March32° · Sea 29° · 7.2 h
In March, Ko Chang is hot: daytime highs average 32 °C, and even at night it stays warm at around 25 °C. The sea averages 29.1 °C – almost as warm as a bath. The sun shines for around 7.2 hours a day. It rains often – on about 20 days, adding up to 117 mm. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is a good month for a holiday in Ko Chang.
Ko Chang in March67April32° · Sea 30° · 7.0 h
In April, Ko Chang is hot: daytime highs average 32 °C, and even at night it stays warm at around 26 °C. The sea averages 30.2 °C – almost as warm as a bath. The sun shines for around 7.0 hours a day. It rains often – on about 23 days, adding up to 175 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, April is a good month for a holiday in Ko Chang.
Ko Chang in April63May32° · Sea 31° · 4.9 h
In May, Ko Chang is hot: daytime highs average 32 °C, and even at night it stays warm at around 26 °C. The sea averages 30.6 °C – almost as warm as a bath. Expect around 4.9 hours of sunshine a day. It is the rainy season: rain falls on about 29 days, totalling 370 mm. On about 27 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is a good month for a holiday in Ko Chang.
Ko Chang in May63June31° · Sea 30° · 3.8 h
In June, Ko Chang is hot: daytime highs average 31 °C, and even at night it stays warm at around 25 °C. The sea averages 29.8 °C – almost as warm as a bath. The sun is scarce, with only about 3.8 hours a day. It is the rainy season: rain falls on about 29 days, totalling 476 mm. On about 22 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, June is a good month for a holiday in Ko Chang.
Ko Chang in June62July30° · Sea 29° · 3.6 h
In July, Ko Chang is hot: daytime highs average 30 °C, and even at night it stays warm at around 25 °C. The sea averages 29.4 °C – almost as warm as a bath. The sun is scarce, with only about 3.6 hours a day. It is the rainy season: rain falls on about 31 days, totalling 557 mm. On about 19 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a good month for a holiday in Ko Chang.
Ko Chang in July62August30° · Sea 29° · 3.6 h
In August, Ko Chang is hot: daytime highs average 30 °C, and even at night it stays warm at around 25 °C. The sea averages 29.1 °C – almost as warm as a bath. The sun is scarce, with only about 3.6 hours a day. It is the rainy season: rain falls on about 31 days, totalling 499 mm. On about 19 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a good month for a holiday in Ko Chang.
Ko Chang in August62September30° · Sea 29° · 3.7 h
In September, Ko Chang is hot: daytime highs average 30 °C, and even at night it stays warm at around 24 °C. The sea averages 29.1 °C – almost as warm as a bath. The sun is scarce, with only about 3.7 hours a day. It is the rainy season: rain falls on about 30 days, totalling 486 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a good month for a holiday in Ko Chang.
Ko Chang in September67October31° · Sea 29° · 5.0 h
In October, Ko Chang is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 29.4 °C – almost as warm as a bath. Expect around 5.0 hours of sunshine a day. It rains often – on about 25 days, adding up to 302 mm. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a good month for a holiday in Ko Chang.
Ko Chang in October82November31° · Sea 29° · 7.2 h
In November, Ko Chang is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 29.3 °C – almost as warm as a bath. The sun shines for around 7.2 hours a day. Rain is frequent, with about 12 rainy days and 82 mm in total. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, November is an excellent month for a holiday in Ko Chang.
Ko Chang in November94December31° · Sea 28° · 7.6 h
In December, Ko Chang is hot: daytime highs average 31 °C, and even at night it stays warm at around 23 °C. The sea averages 28.4 °C – lovely and warm for swimming. The sun shines for around 7.6 hours a day. Rain is rare: about 4 days bring 21 mm in total. On about 25 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, December is an excellent month for a holiday in Ko Chang.
Ko Chang in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Ko Chang
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Warm 20–24°
- Hot 24° and more
- muggy month (15+ muggy days)
HotOctober: nights around 24°. Hot nights: air conditioning makes sleeping much easier. Muggy on about 31 days (dew point 18 °C or more).
The coolest nights are in December (23°), the warmest in April (26°). Nights stay tropical all year (20 °C and more), so a room with air conditioning or at least a fan pays off. It is muggy (dew point 18 °C or more) all year, on about 341 days a year.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 89 | 31° | 23° | 28.1° | 7.7 h | 7 | 38 |
| FebruaryFeb | 84 | 31° | 24° | 28.3° | 7.8 h | 11 | 52 |
| MarchMar | 70 | 32° | 25° | 29.1° | 7.2 h | 20 | 117 |
| AprilApr | 67 | 32° | 26° | 30.2° | 7.0 h | 23 | 175 |
| MayMay | 63 | 32° | 26° | 30.6° | 4.9 h | 29 | 370 |
| JuneJun | 63 | 31° | 25° | 29.8° | 3.8 h | 29 | 476 |
| JulyJul | 62 | 30° | 25° | 29.4° | 3.6 h | 31 | 557 |
| AugustAug | 62 | 30° | 25° | 29.1° | 3.6 h | 31 | 499 |
| SeptemberSep | 62 | 30° | 24° | 29.1° | 3.7 h | 30 | 486 |
| OctoberOct | 67 | 31° | 24° | 29.4° | 5.0 h | 25 | 302 |
| NovemberNov | 82 | 31° | 24° | 29.3° | 7.2 h | 12 | 82 |
| DecemberDec | 94 | 31° | 23° | 28.4° | 7.6 h | 4 | 21 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
12.10° N, 102.35° E · 21 m · Asia/Bangkok
Sea temperature in Ko Chang
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 29.0 – 29.9 °C
Swimming season: all year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Ko Chang ranges from 28.1 °C in January to 30.6 °C in May. At 20 °C and more, the sea is warm enough for swimming all year round.
The sea warms up slowly: it is warmest in May, while the air already peaks in April. The sea temperature varies from year to year: in May, eight out of ten years were between 30.0 and 31.3 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 28.1° | 27.4° | 29.0° | warm |
| FebruaryFeb | 28.3° | 27.6° | 28.9° | warm |
| MarchMar | 29.1° | 28.5° | 29.7° | very warm |
| AprilApr | 30.2° | 29.7° | 30.7° | very warm |
| MayMay | 30.6° | 30.0° | 31.3° | very warm |
| JuneJun | 29.8° | 29.1° | 30.4° | very warm |
| JulyJul | 29.4° | 28.9° | 30.0° | very warm |
| AugustAug | 29.1° | 28.6° | 29.8° | very warm |
| SeptemberSep | 29.1° | 28.5° | 29.7° | very warm |
| OctoberOct | 29.4° | 29.0° | 29.9° | very warm |
| NovemberNov | 29.3° | 28.6° | 29.9° | very warm |
| DecemberDec | 28.4° | 27.7° | 29.5° | warm |
Sunshine hours in Ko Chang
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 5.0 of 11.9 hours of daylight in Ko Chang, 42 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Ko Chang: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Ko Chang has about 25 rainy days with 302 mm of rain in total.
UV index in Ko Chang
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 11 · extremeAvoid the midday sun; SPF 50+, covering clothes, hat and sunglasses.
The sun is strongest in August (UV 13).
Minutes until sunburn in October
- Very fair skin
- about 10 min
- Fair skin
- about 15 min
- Light brown skin
- about 20 min
- Olive skin
- about 25 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Ko Chang
How breezy and how cloudy Ko Chang is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Ko Chang typically peaks at 9 km/h during the day: Beaufort 2, light breeze or less.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 83 % of the sky over Ko Chang: mostly overcast, with about 5.0 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Ko Chang
How often the day gets hot in Ko Chang (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Ko Chang has about 23 hot days, with an average daytime high of 31 °C: hot and muggy. Plan outdoor activities for the morning and evening, drink a lot and take breaks in the cool.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Planning a trip to Ko Chang
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Ko Chang in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Ko Chang has its best school-holiday weather during the Christmas holidays (score 92) and its weakest during the summer holidays (score 62).
- 68
Easter holidays
Mar – Apr
Good
- 32 °C by day
- Sea 30 °C
- 7.1 h of sun a day
- 22 rainy days a month
- 63
May half-term
May – Jun
Good
- 31 °C by day
- Sea 30 °C
- 4.7 h of sun a day
- 29 rainy days a month
Keep in mind: Frequent rain
- 62
Summer holidays
Jul – Aug
Good
- 30 °C by day
- Sea 29 °C
- 3.6 h of sun a day
- 31 rainy days a month
Keep in mind: Frequent rain
- 67
October half-term
Oct
Good
- 31 °C by day
- Sea 29 °C
- 5.0 h of sun a day
- 25 rainy days a month
- 92
Christmas holidays
Dec – Jan
ExcellentBest holidays
- 31 °C by day
- Sea 28 °C
- 7.7 h of sun a day
- 6 rainy days a month
Good for: Beach & swimming
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 12 h 20 min
- Distance
- 9,820 km
- Time zone
- UTC+7
- Jet lag
- About 6 days (6 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Ko Chang compared
Put Ko Chang side by side with another destination.
Ko Chang vs Ko Kut
In October the holiday weather in Ko Chang and Ko Kut is about equally good (score 67 vs 67). During the day it is about as warm in Ko Kut as in Ko Chang. The sea is about equally warm.
| in October | Ko Chang | Ko Kut |
|---|---|---|
| Holiday weather score | 67 | 67 |
| Daytime high | 31° | 31° |
| Sea | 29° | 29° |
| Sunshine | 5 h | 5 h |
| Rainy days | 25 | 27 |
| Best time | Nov – Feb | Nov – Feb |
Through the year
Thailand in October: the best places
In October, Ko Chang ranks 1 among the 31 nearest destinations in this country.
- Ko ChangThis page31°29°67
- 2Ko Kut31°29°67
- 3Pattaya31°30°67
- 4Hua Hin31°29°66
- 5Koh Tao29°29°66
- 6Ko Pha-ngan28°29°66
- 7Koh Samui31°29°66
- 8Laem Chabang32°30°65
Near Ko Chang
Other destinations close by.
Places with a climate like Ko Chang
Destinations whose weather through the year is closest to Ko Chang's – good alternatives.
Frequently asked questions about Ko Chang
When is the best time to visit Ko Chang?
The best time to visit Ko Chang is from November to February. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Ko Chang?
The sea temperature in Ko Chang ranges from 28.1 °C in January to 30.6 °C in May. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Ko Chang in October?
Yes. In October the sea averages 29.4 °C – almost as warm as a bath.
What is the warmest month in Ko Chang?
April is the warmest month, with average highs of 32 °C and nights around 26 °C. September is the coolest month at 30 °C.
When does it rain most in Ko Chang?
The rainy season is from May to September; the wettest month is July with 557 mm. The driest month is December with 21 mm.
How many hours of sunshine does Ko Chang get?
Ko Chang gets around 2,100 hours of sunshine a year. The sunniest month is February with 7.8 hours a day; in July there are 3.6 hours a day.
What time zone is Ko Chang in?
Ko Chang is on UTC+7 all year.
How long is the flight from London to Ko Chang?
A nonstop flight from London to Ko Chang takes about 12 h 20 min, for a straight-line distance of about 9,820 km. Most routes need a change of planes, which adds time.
Which school holidays are best for Ko Chang?
Ko Chang has its best school-holiday weather during the Christmas holidays (score 92) and its weakest during the summer holidays (score 62). Holiday ratings (0–100): Easter holidays 68, May half-term 63, summer holidays 62, October half-term 67, Christmas holidays 92.