Koh Samui · Month comparison
July vs April
April ranks #1 overall vs July at #7. Songkran brings Thai New Year festivities — warm, slightly wetter, but culturally unmissable.
July
#7 of 12 months
Strong option
Second peak season: European summer holidays bring the crowds back to reliably sunny skies.
- ↑Rain drops dramatically from June — one of the drier months outside the Jan–Apr window
- ↑Sunshine hours rise again: good beach weather most days with manageable humidity
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 | July | April |
|---|---|---|
| Weather score | 7 | 7 |
| Value score | 4 | 6 |
| Crowd score | 3 | 6 |
| Events score | 5 | 7 |
| Atmosphere | 7 | 8 |
| Avg high temp | 31.5°C | 32.8°C |
| Monthly rain | 98mm | 83mm |
| Daily sunshine | 7.2hrs | 7.5hrs |
July trade-offs
- ↓European summer school holiday surge: prices spike to near-January levels
- ↓Chaweng Beach at capacity again — booking 2–3 months ahead for decent mid-range options
- ↓Occasional heavy rain still possible; the weather is better than May–June but not as reliable as January
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 →