Koh Samui · Month comparison
October vs April
April ranks #1 overall vs October at #10. Songkran brings Thai New Year festivities — warm, slightly wetter, but culturally unmissable.
October
#10 of 12 months
Avoid
Monsoon peak: 305mm of rain and grey skies — the worst weather month on Koh Samui.
- ↑Rock-bottom prices: luxury villas at budget rates, resorts negotiable for longer stays
- ↑Virtually no tourists: the island strips back to its Thai fishing-community character
April
#1 of 12 months
Best match
Songkran brings Thai New Year festivities — warm, slightly wetter, but culturally unmissable.
- ↑Songkran water festival (13–15 April) transforms Na Thon and Chaweng into celebrations of Thai New Year
- ↑Good value accommodation: 30–35% below peak-season rates with weather still mostly excellent
| Factor | October | April |
|---|---|---|
| Weather score | 2 | 7 |
| Value score | 9 | 6 |
| Crowd score | 9 | 6 |
| Events score | 3 | 7 |
| Atmosphere | 4 | 8 |
| Avg high temp | 29.5°C | 32.8°C |
| Monthly rain | 305mm | 83mm |
| Daily sunshine | 4.2hrs | 7.5hrs |
October trade-offs
- ↓305mm of rain is not occasional showers — sustained tropical downpours make outdoor plans impossible
- ↓Some resorts partially close for renovation; reduced services across the island
- ↓Flooding risk on lower roads around Chaweng and Na Thon after heavy rainfall events
April trade-offs
- ↓Songkran week: hotel prices spike temporarily and transport books up fast
- ↓83mm of rain is manageable but occasional heavy afternoon showers begin appearing
- ↓Peak heat of 32.8°C: demanding for any strenuous outdoor activity between 11am and 3pm
Scores compare months within Koh Samui. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →