Koh Samet vs Koh Yao Yai
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Slightly easier exploring without a scooter
Walkable beach areas, songthaews and boat transfers cover many visitor needs, though cross-island trips take coordination.
A quieter setting
Quiet coastal stays and an unhurried village setting are central to the island experience, with local variation around piers and resorts. Another assessed advantage: more island-hopping options.
Side by side
What feels different
Our editorial assessments · Select a factor to see how we scored each place.
Why we rate Koh Samet 8/10
Several attractive white-sand bays are easy weekend escapes from Bangkok, though the busiest beaches can be crowded.
Why we rate Koh Yao Yai 7/10
Several appealing beach bases and Laem Had provide strong coastal appeal, with substantial tidal and location differences.
What we assess
Beach appeal, convenient access and variety during a beach-focused stay, within the destination itself.
Why we rate Koh Samet 7/10
Curving coves, clear Gulf water and coastal forest make a pleasant island setting, without the dramatic cliffs of the Andaman.
Why we rate Koh Yao Yai 8/10
Green island landscapes, coastal views and the Laem Had sandbar provide a strong natural setting.
What we assess
The visual impact of natural surroundings and how central those landscapes are to a typical stay.
Why we rate Koh Samet 2/10
A few local shrines and village details aside, the island’s visitor appeal is mostly beaches and short breaks.
Why we rate Koh Yao Yai 5/10
Village and fishing-community outings offer worthwhile local context, with less depth of major heritage sights than cultural cities.
What we assess
The variety, depth and practical access to historic places, temples, architecture, traditions and cultural experiences during a typical stay.
Why we rate Koh Samet 6/10
Seafood, Thai dishes and resort restaurants are easy to find, though the overall choice is limited by the island’s size.
Why we rate Koh Yao Yai 6/10
Village food and several resort restaurants provide useful choice, though dining is dispersed rather than concentrated in a large town.
What we assess
Food quality, variety, distinctive local cooking and how readily visitors can find good places to eat, regardless of price.
Why we rate Koh Samet 5/10
Beach bars and fire shows add lively evenings at the main beaches, with much quieter options elsewhere.
Why we rate Koh Yao Yai 2/10
Resort bars and quiet coastal evenings are available, with few late-night options beyond the main resort venues.
What we assess
The choice, variety and liveliness of evening venues, their opening hours and how easily you can enjoy a typical night out.
Why we rate Koh Samet 5/10
Quiet stays are possible away from the main bays, but weekend crowds and beach entertainment are common.
Why we rate Koh Yao Yai 9/10
Quiet coastal stays and an unhurried village setting are central to the island experience, with local variation around piers and resorts.
What we assess
How easily you can enjoy a peaceful stay, considering traffic, nightlife noise, crowds and practical quieter bases.
Why we rate Koh Samet 6/10
Short boat outings reach nearby coves and snorkelling spots, but the excursion choice is more limited than at major island hubs.
Why we rate Koh Yao Yai 8/10
Arranged trips reach nearby islands and Phang Nga Bay, with weather, group size and the chosen base affecting convenience.
What we assess
The variety of worthwhile sea-island trips, convenient departures, journey times and flexibility under normal operating conditions.
Why we rate Koh Samet 7/10
Walkable beach areas, songthaews and boat transfers cover many visitor needs, though cross-island trips take coordination.
Why we rate Koh Yao Yai 6/10
A chosen resort base works with arranged transfers and taxis; exploring the spread-out island requires planning and extra rides.
What we assess
Freedom to explore without renting a scooter, using walking, public transport, taxis, tuk-tuks, ride-hailing or boats; transport price is assessed separately.
Why we rate Koh Samet 6/10
Simple rooms and local food are available, but weekend demand, park fees and boat transfers can raise the total.
Why we rate Koh Yao Yai 6/10
Simple bungalows and village food are available, but the smaller budget selection and boat or road transfers add costs.
What we assess
How easily you can enjoy a typical stay on a modest budget, including simple accommodation, food, realistic transport and characteristic activities.
Scores out of 10 · Higher means more of that characteristic About these scores
How to read the scale
Scores run from 0 to 10 and describe how strongly a destination offers each characteristic.
Higher does not always mean better
A higher nightlife score means a livelier scene. A higher quietness score means a calmer atmosphere. The right balance depends on your trip.
Close scores mean similar experiences
Small differences should not decide your trip on their own.
Koh Samet
Choose Koh Samet if...
- You want an island beach break within reach of Bangkok.
- You want a choice of white-sand bays, with livelier beaches and quieter places to stay.
- You like seafood, beach bars and relaxed evenings by the water.
The trade-off
Popular beaches can be busy and stays cost more on weekends and holidays. Choose your beach carefully if quiet evenings matter, and include boat transfers and park fees in your budget.
Koh Yao Yai
Choose Koh Yao Yai if...
- Laem Had sandbar and coastal scenery
- Local village and fishing-community context
- Resort stays and arranged water-based outings
The trade-off
The island is dispersed, beaches are tide-sensitive, and a resort transfer does not provide effortless transport everywhere else.
Plan your trip
When to go
See how temperature, rainfall and travel conditions change through the year. Select a month to focus your comparison.
| Factor | Koh Samet | Koh Yao Yai |
|---|---|---|
| Average daytime high | 32°C | 33°C |
| Monthly Rainfall | 29 mm | 50 mm |
| Rainy days | 3 | 5.6 |
| Crowds | High | High |
| Stay prices | High | High |
| Sea conditions | Calm | Calm |
| Average daytime high | 32°C | 34°C |
| Monthly Rainfall | 32 mm | 24 mm |
| Rainy days | 3.7 | 3.4 |
| Crowds | High | High |
| Stay prices | High | High |
| Sea conditions | Calm | Calm |
| Average daytime high | 33°C | 34°C |
| Monthly Rainfall | 71 mm | 81 mm |
| Rainy days | 5.6 | 7.5 |
| Crowds | High | High |
| Stay prices | Typical | High |
| Sea conditions | Calm | Calm |
| Average daytime high | 34°C | 34°C |
| Monthly Rainfall | 85 mm | 135 mm |
| Rainy days | 7 | 11.7 |
| Crowds | Moderate | Moderate |
| Stay prices | Typical | Typical |
| Sea conditions | Calm | Variable |
| Average daytime high | 34°C | 33°C |
| Monthly Rainfall | 191 mm | 237 mm |
| Rainy days | 13.6 | 18.9 |
| Crowds | Moderate | Low |
| Stay prices | Low | Low |
| Sea conditions | Variable | Variable |
| Average daytime high | 33°C | 33°C |
| Monthly Rainfall | 178 mm | 249 mm |
| Rainy days | 15.3 | 18.6 |
| Crowds | Moderate | Low |
| Stay prices | Low | Low |
| Sea conditions | Variable | Rough |
| Average daytime high | 32°C | 32°C |
| Monthly Rainfall | 177 mm | 240 mm |
| Rainy days | 14.6 | 19.1 |
| Crowds | Moderate | Low |
| Stay prices | Low | Low |
| Sea conditions | Variable | Rough |
| Average daytime high | 32°C | 32°C |
| Monthly Rainfall | 128 mm | 309 mm |
| Rainy days | 13.7 | 19.5 |
| Crowds | Moderate | Low |
| Stay prices | Low | Low |
| Sea conditions | Variable | Rough |
| Average daytime high | 32°C | 32°C |
| Monthly Rainfall | 269 mm | 350 mm |
| Rainy days | 18.1 | 21.7 |
| Crowds | Low | Low |
| Stay prices | Low | Low |
| Sea conditions | Variable | Rough |
| Average daytime high | 32°C | 32°C |
| Monthly Rainfall | 196 mm | 336 mm |
| Rainy days | 17 | 22.7 |
| Crowds | Moderate | Low |
| Stay prices | Low | Low |
| Sea conditions | Variable | Rough |
| Average daytime high | 33°C | 32°C |
| Monthly Rainfall | 44 mm | 178 mm |
| Rainy days | 5.5 | 15.9 |
| Crowds | High | Moderate |
| Stay prices | High | Typical |
| Sea conditions | Calm | Variable |
| Average daytime high | 32°C | 32°C |
| Monthly Rainfall | 8 mm | 82 mm |
| Rainy days | 1.7 | 10.3 |
| Crowds | High | High |
| Stay prices | High | High |
| Sea conditions | Calm | Calm |
| Destination | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average daytime high | ||||||||||||
| Koh Samet |
32°C
|
32°C
|
33°C
|
34°C
|
34°C
|
33°C
|
32°C
|
32°C
|
32°C
|
32°C
|
33°C
|
32°C
|
| Koh Yao Yai |
33°C
|
34°C
|
34°C
|
34°C
|
33°C
|
33°C
|
32°C
|
32°C
|
32°C
|
32°C
|
32°C
|
32°C
|
| Monthly Rainfall | ||||||||||||
| Koh Samet |
29 mm
|
32 mm
|
71 mm
|
85 mm
|
191 mm
|
178 mm
|
177 mm
|
128 mm
|
269 mm
|
196 mm
|
44 mm
|
8 mm
|
| Koh Yao Yai |
50 mm
|
24 mm
|
81 mm
|
135 mm
|
237 mm
|
249 mm
|
240 mm
|
309 mm
|
350 mm
|
336 mm
|
178 mm
|
82 mm
|
| Rainy days | ||||||||||||
| Koh Samet | 3 | 3.7 | 5.6 | 7 | 13.6 | 15.3 | 14.6 | 13.7 | 18.1 | 17 | 5.5 | 1.7 |
| Koh Yao Yai | 5.6 | 3.4 | 7.5 | 11.7 | 18.9 | 18.6 | 19.1 | 19.5 | 21.7 | 22.7 | 15.9 | 10.3 |
| Crowds | ||||||||||||
| Koh Samet | High | High | High | Moderate | Moderate | Moderate | Moderate | Moderate | Low | Moderate | High | High |
| Koh Yao Yai | High | High | High | Moderate | Low | Low | Low | Low | Low | Low | Moderate | High |
| Stay prices | ||||||||||||
| Koh Samet | High | High | Typical | Typical | Low | Low | Low | Low | Low | Low | High | High |
| Koh Yao Yai | High | High | High | Typical | Low | Low | Low | Low | Low | Low | Typical | High |
| Sea conditions | ||||||||||||
| Koh Samet | Calm | Calm | Calm | Calm | Variable | Variable | Variable | Variable | Variable | Variable | Calm | Calm |
| Koh Yao Yai | Calm | Calm | Calm | Variable | Variable | Rough | Rough | Rough | Rough | Rough | Variable | Calm |
Temperatures are historical average daytime highs, not the highest temperatures you might experience. Rainfall and rainy days are monthly averages, not a forecast. A rainy day need not mean rain all day.
Stay prices are relative to each destination’s usual rates. Holidays can bring extra crowds and higher prices. Sea conditions vary by beach and day; check local conditions before boat trips.
Koh Samet: Thai Meteorological Department — RAYONG, 1991–2020.
Koh Yao Yai: Thai Meteorological Department - PHUKET (48564), 1991-2020.
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Copyright of the Tourism Authority of Thailand (TAT)
Copyright of the Tourism Authority of Thailand (TAT)
Copyright of the Tourism Authority of Thailand (TAT)