worldweather

Weather in Ko Chang - 14-day forecast

Detailed weather forecast for Ko Chang, Thailand: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Ko Chang
today🌧️ 27°💧 4.2 mm
Sun🌧️ 28°💧 40.1 mm
Mon🌧️ 26°💧 36.1 mm
Tue🌧️ 26°💧 56.2 mm
Wed🌧️ 25°💧 44.7 mm
Thu🌧️ 25°💧 95 mm
Fri🌧️ 23°💧 107.6 mm
Sat🌧️ 24°💧 67.9 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Wednesday 9 Sept in Ko Chang, the forecast high is 25°C. Typical daytime temperatures at this time of year range from 27°C to 28°C, so it will be exceptionally cool. It is cooler than 99% of similar days.

27°Ccooler than usual
usually 27°C–28°C
cooler than 73% of similar days
night: exceptionally warm rain: less rain than usual wind: exceptionally strong
28°Cnear normal
usually 27°C–28°C
night: exceptionally warm rain: more rain than usual wind: exceptionally strong
26°Cexceptionally cool
usually 27°C–28°C
cooler than 96% of similar days
night: warmer than usual rain: more rain than usual wind: exceptionally strong
26°Cexceptionally cool
usually 27°C–28°C
cooler than 95% of similar days
night: near normal rain: exceptionally wet wind: exceptionally strong
25°Cexceptionally cool
usually 27°C–28°C
cooler than 99% of similar days
night: near normal rain: more rain than usual wind: exceptionally strong
25°Cexceptionally cool
usually 27°C–28°C
cooler than 99% of similar days
night: exceptionally cool rain: exceptionally wet wind: exceptionally strong
23°Cexceptionally cool
usually 27°C–28°C
cooler than 99% of similar days
night: exceptionally cool rain: exceptionally wet wind: exceptionally strong

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
20°28°35° 1981: 29°C1982: 27°C1983: 28°C1984: 27°C1985: 27°C1986: 27°C1987: 28°C1988: 28°C1989: 27°C1990: 27°C1991: 27°C1992: 27°C1993: 27°C1994: 27°C1995: 27°C1996: 28°C1997: 29°C1998: 28°C1999: 27°C2000: 27°C2001: 28°C2002: 27°C2003: 27°C2004: 28°C2005: 28°C2006: 28°C2007: 29°C2008: 28°C2009: 27°C2010: 28°C2011: 27°C2012: 27°C2013: 28°C2014: 27°C2015: 28°C2016: 28°C2017: 29°C2018: 28°C2019: 28°C2020: 29°C2021: 28°C2022: 27°C2023: 28°C2024: 29°C2025: 28°C 2026 forecast: 26°C current forecast 26°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 28°C by day. The coolest year was 1986 (27°C) and the warmest was 2017 (29°C). The current forecast averages 26°C - lower than in 100% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Ko Chang

Ko Chang - 14-day weather forecast infographic

Day-by-day forecast for Ko Chang

Saturday5 September 2026
🌧️27°light rain
sunrise 06:00 · sunset 18:19 · night 28° · evening 27° · rain 4.24 mm · humidity 81% · wind 7 m/s · clouds 100%
Sunday6 September 2026
🌧️28°moderate rain
sunrise 06:00 · sunset 18:18 · night 27° · evening 27° · rain 40.08 mm · humidity 79% · wind 7 m/s · clouds 100%
Monday7 September 2026
🌧️26°moderate rain
sunrise 06:00 · sunset 18:17 · night 26° · evening 27° · rain 36.08 mm · humidity 79% · wind 7 m/s · clouds 100%
Tuesday8 September 2026
🌧️26°moderate rain
sunrise 06:00 · sunset 18:17 · night 26° · evening 26° · rain 56.24 mm · humidity 79% · wind 9 m/s · clouds 100%
Wednesday9 September 2026
🌧️25°moderate rain
sunrise 06:00 · sunset 18:16 · night 26° · evening 25° · rain 44.69 mm · humidity 84% · wind 7 m/s · clouds 100%
Thursday10 September 2026
🌧️25°heavy rain
sunrise 06:00 · sunset 18:15 · night 24° · evening 25° · rain 95.04 mm · humidity 87% · wind 11 m/s · clouds 100%
Friday11 September 2026
🌧️23°heavy rain
sunrise 06:00 · sunset 18:15 · night 23° · evening 23° · rain 107.64 mm · humidity 91% · wind 9 m/s · clouds 100%
Saturday12 September 2026
🌧️24°heavy rain
sunrise 06:00 · sunset 18:14 · night 25° · evening 24° · rain 67.92 mm · humidity 86% · wind 13 m/s · clouds 100%
Sunday13 September 2026
🌧️25°moderate rain
sunrise 06:00 · sunset 18:13 · night 25° · evening 25° · rain 47.82 mm · humidity 84% · wind 8 m/s · clouds 100%
Monday14 September 2026
🌧️26°moderate rain
sunrise 06:00 · sunset 18:13 · night 25° · evening 25° · rain 52.83 mm · humidity 82% · wind 13 m/s · clouds 100%
Tuesday15 September 2026
🌧️26°moderate rain
sunrise 06:00 · sunset 18:12 · night 24° · evening 25° · rain 30.99 mm · humidity 76% · wind 11 m/s · clouds 100%
Wednesday16 September 2026
🌧️26°light rain
sunrise 06:00 · sunset 18:11 · night 26° · evening 27° · rain 7.11 mm · humidity 75% · wind 7 m/s · clouds 65%
Thursday17 September 2026
🌧️26°moderate rain
sunrise 06:00 · sunset 18:11 · night 25° · evening 26° · rain 29.58 mm · humidity 76% · wind 10 m/s · clouds 95%
Friday18 September 2026
🌧️24°moderate rain
sunrise 06:00 · sunset 18:10 · night 24° · evening 24° · rain 42.66 mm · humidity 88% · wind 9 m/s · clouds 79%
Saturday19 September 2026
🌧️24°heavy rain
sunrise 06:00 · sunset 18:09 · night 26° · evening 23° · rain 74.85 mm · humidity 91% · wind 14 m/s · clouds 100%
Sunday20 September 2026
🌧️26°moderate rain
sunrise 06:00 · sunset 18:09 · night 26° · evening 26° · rain 41.91 mm · humidity 82% · wind 14 m/s · clouds 100%

UV index in Ko Chang - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTKo Chang03681111+6UV HIGHtoday, daily maxSPF 30-50, a hat and sunglasses are a must. Betterstay in shade between 11:00 and 15:00.Unprotected fair skin may burn in about 35 min6Sat5.099Sun6.098Mon7.099Tue8.099Wed9.095Thu10.094Fri11.094Sat12.093Sun13.095Mon14.099Tue15.099Wed16.097Thu17.098Fri18.099Sat19.099Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Ko Chang is 6 (high) - unprotected fair skin can burn in about 35 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Sea temperature - Ko Chang

Water today
30°C
Week avg
29°C
Waves today
0.7 m
How's the water?
very warm
16-day sea temperature forecast:
5.09 30°C6.09 30°C7.09 29°C8.09 29°C9.09 29°C10.09 29°C11.09 29°C12.09 28°C13.09 29°C
Average sea temperature through the year:
Jan 29°CFeb 29°CMar 30°CApr 31°CMay 32°CJun 31°CJul 30°CAug 30°CSep 30°COct 30°CNov 30°CDec 29°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.
Upcoming public holidays in Thailand: King Bhumibol Memorial Day — 13 October · Chulalongkorn Day — 23 October · King Bhumibol's Birthday, National Day and Father's Day — 7 December. Full calendar and travel notes

Nearby and related places

Koh KongBattambangSisŏphŏnKo Pha NganChiang RaiKo SamuiChiang MaiPhitsanulokBangkok

FAQ - Ko Chang weather

What is the weather like in Ko Chang today?
Today it is about 27° during the day and 28° at night, light rain.
How far ahead can I check the forecast for Ko Chang?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.