In Koh Samui, they use Type A, B, C, and O plugs and sockets. The mains voltage is 220 V, and the frequency is 50 Hz.
So, you’ll definitely need a travel adaptor in Koh Samui. Their plugs and sockets aren’t the same as our Type G back in the UK.
Key Takeaways
- Plugs and sockets: A, B, C, and O
- Mains voltage: 220 V
- Frequency: 50 Hz
- Travel adaptor needed? Yes, you do need a travel adaptor
- Voltage converter needed? No, a power converter isn’t necessary here.
- Recommended travel adaptor: AUNNO Universal Travel Adaptor
The information here is based on guidance from local electricity authorities, international standards such as the IEC, and insights from fellow travellers worldwide.
Sockets in Koh Samui
In Koh Samui, you’ll find Type A, B, C, and O plugs and sockets.
Type A
Type A sockets have two flat parallel pins and no grounding. Unlike Type G, they don’t include an earth pin, which makes them less secure.
Type B
Type B sockets have two flat parallel pins plus a round grounding pin. Unlike Type G, the pins are thinner and there’s no built-in fuse.
Type C
Type C sockets have two round pins and no grounding. Unlike Type G, they take a slimmer plug without an earth pin or fuse.
Type O
Type O sockets have two round pins and an additional grounding pin. UK Type G plugs do not fit into Type O sockets.
Recommended Travel Adaptor for Koh Samui
We’ve tested countless travel adaptors on the road. After checking safety, durability, charging speed and value, this one stood out. It’s the adaptor we recommend.
No adaptor with you and already abroad? You’re not out of options — many airports and local shops sell them. Still, bringing your own is the simplest way to avoid paying over the odds or ending up with something that barely works.
Koh Samui is frequently included in island-hopping trips that also visit Malaysia and Singapore. Plug setups can be slightly different, so it’s worth checking ahead of time.
Do You Need a Voltage Converter?
You don’t need to worry about a converter in Koh Samui; the voltage is virtually identical to what we use in the UK.
Always check the voltage label before you plug in abroad. If it reads ‘100–240 V, 50/60 Hz’, your kit will work just fine without a converter — most modern laptops, tablets and chargers already do.
Top Travel Essentials to Take With You
Packing smart is half the battle when you’re travelling. A digital scale helps you avoid overweight fees, a power bank keeps your tech ticking over, and packing cubes stop everything from ending up in a jumble. We’ve tried them all, and they’ve earned their place.
