Krabi · Month comparison
September vs March
March ranks #1 overall vs September at #10. Still-excellent conditions at better value — the dry season's best month for most visitors.
September
#10 of 12 months
Avoid
The wettest month — Railay closed, boats suspended, avoid unless price is everything.
- ↑Lowest hotel prices of the year: even the better Ao Nang properties at minimum rates
- ↑Krabi coast near-empty: Ao Nang's normally busy beach strip deserted, local restaurants quiet and unhurried
March
#1 of 12 months
Best match
Still-excellent conditions at better value — the dry season's best month for most visitors.
- ↑Conditions nearly identical to February at noticeably lower prices: the dry season's best value window on the Andaman coast
- ↑All island tours, Railay longtail transfers, and Four Islands trips operating at full capacity
| Factor | September | March |
|---|---|---|
| Weather score | 2 | 9 |
| Value score | 10 | 5 |
| Crowd score | 10 | 5 |
| Events score | 2 | 4 |
| Atmosphere | 3 | 8 |
| Avg high temp | 31°C | 34°C |
| Monthly rain | 265mm | 45mm |
| Daily sunshine | 4.5hrs | 8.5hrs |
September trade-offs
- ↓265mm of rainfall — the worst weather month on Krabi's Andaman coast; Railay effectively unreachable for most of the month
- ↓Boat services to Railay suspended for extended periods; some longtail operators stop running altogether until October
- ↓Many beach-side accommodation properties and tour operators partially close or operate skeleton service
March trade-offs
- ↓Temperatures rising toward 34°C with increasing humidity: midday on the beach or mid-route rock climb becomes genuinely hot
- ↓Some Ao Nang hotel rates remain elevated through Thai school holiday weeks in late March
- ↓Sea conditions beginning to shift toward month end — occasional swell precedes the approaching monsoon
Scores compare months within Krabi. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →