Beach forecast for Ko Chang
Today, Thursday, October 29, 2026 · local time (GMT+7) · Trat, Thailand Today, Thu, Oct 29 · GMT+7- Swimming
- Calm · 0.8 ft
- Water
- 88 °F · very warm
- Max UV
- 7 · SPF 50
- Wind
- 6 mph
Today, Thursday, October 29, it's a fair beach day in Ko Chang (6/10). The best hours are from 7:00 am to 10:00 am: beach weather, little wind, a calm sea and water at 87 °F, though with clouds. The best day this week is Monday, November 2, at 9/10.
Beach forecast for the next 7 days
| Day | Rating | Best hours | Swimming | Water | UV |
|---|---|---|---|---|---|
| Today | 6Fair beach day | 7:00–10:00 am | Calm · 0.8 ft | 88 °F | 7 |
| Fri 30 | 6Fair beach day | 7:00–10:00 am | Calm · 0.3 ft | 88 °F | 9 |
| Sat 31 | 8Good beach day | 7:00–9:00 am | Calm · 0.3 ft | 88 °F | 9 |
| Sun 1 | 8Good beach day | 7:00 am–12:00 pm | Calm · 0.5 ft | 87 °F | 10 |
| Mon 2 | 9Perfect beach day | 7:00–10:00 am | Calm · 0.2 ft | 88 °F | 10 |
| Tue 3 | 8Good beach day | 7:00–10:00 am | Calm · 0.1 ft | 87 °F | — |
| Wed 4 | 8Good beach day | 7:00–11:00 am | Calm · 0.1 ft | 88 °F | — |
Each rating comes from sun, temperature, rain, wind, waves, UV, water temperature and, where there is one, the tide.
Today in detail
2 good hours- Feels like 93 °F: hot
- Offshore breeze (5 mph)
- Calm for swimming: 0.8 ft waves
- UV 4 (moderate): SPF 30 sunscreen
- Water at 87 °F (very warm)
- Cloudy (100% cloud cover)
Thunderstorms during beach hours: get out of the water and off the sand as soon as you hear thunder.
Today, hour by hour
- Swimming Calm · 0.8 ft
0.8 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 88 °F
Very warm: barely refreshing.
- Sun & sunscreen UV 7 · SPF 50
Max UV 7 (high): SPF 50 sunscreen, reapplied every 2 hours.
- Wind 6 mph
Offshore breeze (6 mph).
- Tide & sand
We don't show the tide for Ko Chang, so it doesn't count in the rating.
The best window, 7:00 am to 10:00 am, brings beach weather, little wind, a calm sea and water at 87 °F, though with clouds.
We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority.
Today, hour by hour
| Time | Rating | Sky | Feels like | Wind | Waves | UV |
|---|---|---|---|---|---|---|
| 7:00 am | 7 | Overcast | 87 °F | 5 mph | 0.8 ft | 1 |
| 8:00 am | 7 | Overcast | 89 °F | 5 mph | 0.8 ft | 2 |
| 9:00 am | 6 | Overcast | 93 °F | 5 mph | 0.7 ft | 4 |
| 10:00 am | 0 | Overcast | 96 °F | 6 mph | 0.7 ft | 7 |
| 11:00 am | 0 | Light showers | 97 °F | 6 mph | 0.7 ft | 7 |
| 12:00 pm | 0 | Light showers | 95 °F | 5 mph | 0.7 ft | 6 |
| 1:00 pm | 0 | Light showers | 93 °F | 5 mph | 0.7 ft | 5 |
| 2:00 pm | 0 | Drizzle | 92 °F | 3 mph | 0.7 ft | 3 |
| 3:00 pm | 3 | Drizzle | 92 °F | 3 mph | 0.6 ft | 2 |
| 4:00 pm | 5 | Drizzle | 91 °F | 5 mph | 0.6 ft | 1 |
Beach hours only: from one hour after sunrise to half an hour before sunset.
Beaches near Ko Chang
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Klong Prao Beach 0.6 mi · W
- Restrooms
- Showers
- Parking
- Chai Chet Beach 1.6 mi · NW
- Restrooms
- Parking
- Kai Bae Beach 1.6 mi · SW
- Restrooms
- Showers
- Parking
- Lonely Beach 2.7 mi · S
- Tha Nam 2.8 mi · S
- Bailan Beach 3.6 mi · S
- Parking
- White Sand Beach 4.9 mi · NW
- Restrooms
- Parking
- Tranquility Beach 5.0 mi · S
Named beaches within 6.2 mi, nearest first. Amenities from OpenStreetMap: some may be missing or out of date. View on OpenStreetMap · Add or fix on OpenStreetMap
Beaches and amenities: © OpenStreetMap contributors (ODbL).
Webcams near Ko Chang
Webcams provided by windy.com — add a webcam
How we rate a beach day
We rate every beach hour from 0 to 10 with simple, fixed rules:
- Adds: sunshine (up to 3 points, fewer with more clouds), warmth (up to 4, from the feels-like temperature; ideal between 81 °F and 91 °F), a calm sea (1), water at 70 °F or warmer (1; from 64 °F, half) and low or mid tide (1: more sand). Anything without data is left out and the rest is scaled to 10.
- Takes away: cold (feels-like below 64 °F, 1 to 4 points), rain (half a point if likely, up to 6 if it rains; thunderstorms, 8), wind from force 4, about 12 mph (1 to 6 points; half a point more if offshore, which blows inflatables out to sea, or onshore, which churns the water), waves (1 to swim with care, 4 if dangerous, 1 more for high rip current risk), very high UV (half a point; extreme, 1), water below 59 °F (1) and spring high tides (1: little sand left).
- Swimming: calm, use care (waves from 2.6 ft, or long swell) or dangerous (from 6.6 ft, or 4.9 ft with a long period), based on how much of the wave reaches this shore given the way it faces. In the U.S., today's and tomorrow's rip current risk comes from the National Weather Service surf zone forecast when it issues one; otherwise we estimate it from the waves.
- Best windows: runs of 2 to 5 hours rated 4 or more and close to the best hour, at least one hour apart.
- Day rating: the average of the best window; a 2-hour window keeps 85% of it and a 3-hour window 95%.
Today, in the best window: sun 0 of 3, warmth 3.7 of 4, calm sea 1 of 1 and water 1 of 1; short window: the rating keeps 95%.
It's a guide, not a guarantee: weather changes and every beach is different. Always follow the lifeguard's flags.
Questions about the beach in Ko Chang
Is it a beach day in Ko Chang today?
A fair beach day: 6/10. Best from 7:00 am to 10:00 am, with beach weather, little wind, a calm sea and water at 87 °F, though with clouds.
What are the swimming conditions in Ko Chang today?
0.8 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
How warm is the water in Ko Chang?
About 88 °F today: very warm. That's the sea surface temperature offshore; it can differ a little at the shoreline.
How much sun protection do I need in Ko Chang today?
UV reaches 7 (high): SPF 50 sunscreen, sunglasses and a hat.
What about tomorrow? Will it be a beach day in Ko Chang?
Tomorrow, Friday, October 30: a fair beach day (6/10), best from 7:00 am to 10:00 am.
What beaches are near Ko Chang?
Klong Prao Beach (0.6 mi), Chai Chet Beach (1.6 mi), Kai Bae Beach (1.6 mi), Lonely Beach (2.7 mi) and Tha Nam (2.8 mi). See below for amenities and water quality.
Are there jellyfish or sargassum today?
We don't know: there's no open data on jellyfish, sargassum or closures for each beach. Ask the lifeguard, check the flags or the local beach authority's website.
How is the rating worked out?
From the hourly forecast: sun and clouds, feels-like temperature, rain, wind (and whether it blows onshore or offshore), waves and their period, UV, water temperature and, where there is one, the tide. Each factor adds or takes away a fixed number of points and the rating sums them up out of 10.
More about Ko Chang today
Learn more
Our own calculation, using the Open-Meteo forecast (ECMWF, NOAA GFS, Météo-France, Copernicus Marine and CAMS, CC BY 4.0) and the sun from astronomy-engine.