Best time to charter a catamaran or yacht in Thailand
Best month to sail Thailand: cheapest August (€4,996/wk), priciest January. Prices, temperature, wind by month.
The best-value months to charter a catamaran in Thailand are June, August and September: €4,996 per week in August against €10,235 in January, in 12 Knots' average asking prices (updated October 2026) (12 Knots, checked 27 Oct 2026). Every month averages 27–29 °C (our calculation from NASA POWER data at Ao Chalong, Phuket (NASA POWER, checked 28 Oct 2026)) and we have no verified rainfall or monsoon source, so we don't name best-weather months; avoid December, January and February if price matters, the three priciest months (from €9,938).
Last checked: 27 Oct 2026 (prices) and 28 Oct 2026 (weather). Prices are average weekly asking prices for catamarans (bareboat and crewed mixed), before extras. "Best value", "best weather", "sweet spot" and "avoid" are our rules on the sourced figures (how we decide). Planning around a month instead? See where to sail by month.
Thailand month by month: price, temperature and wind
| Month | Avg. weekly price | vs cheapest month | Mean air temp | Mean wind | Our verdict |
|---|---|---|---|---|---|
| January | €10,235 | +105% | 27 °C | 7 kn | Peak price · Warm |
| February | €9,938 | +99% | 28 °C | 7 kn | Peak price · Warm |
| March | €9,125 | +83% | 29 °C | 6 kn | Warm |
| April | €8,165 | +63% | 29 °C | 5 kn | Warm |
| May | €5,324 | +7% | 29 °C | 6 kn | Warm |
| June | €5,062 | +1% | 28 °C | 7 kn | Best value · Warm |
| July | €5,073 | +2% | 28 °C | 8 kn | Warm |
| August | €4,996 | cheapest | 28 °C | 8 kn | Best value · Warm |
| September | €5,016 | +0% | 28 °C | 8 kn | Best value · Warm |
| October | €6,671 | +34% | 28 °C | 6 kn | Warm |
| November | €9,397 | +88% | 28 °C | 6 kn | Warm |
| December | €10,140 | +103% | 27 °C | 7 kn | Peak price · Warm |
Bold prices are the three cheapest months. Prices: (12 Knots, checked 27 Oct 2026). Air temp and wind: Air temp = NASA POWER monthly mean 2 m air temperature (T2M); wind = monthly mean 10 m wind speed (WS10M), converted from m/s to knots (kn) with 1 m/s = 3600/1852 kn. For each calendar month we average the 2016–2025 values (10 full years). POWER's meteorological grid is ½° latitude by ⅝° longitude (roughly 55 × 50 km at these latitudes), so one cell cannot show local sea breezes or coast-to-hill temperature differences. They are our calculation of average conditions, not a forecast, not gusts, and not sea conditions. Mean wind is lower than the peak winds you will feel on the water. Reference point: Ao Chalong, Phuket. Weather data obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) Project, funded through the NASA Earth Science Division (pulled 2026-10-28) (NASA POWER, checked 28 Oct 2026). We changed the data: we averaged the monthly values for 2016–2025 and converted wind from m/s to knots (our calculation).
When is the cheapest time to charter in Thailand?
The three cheapest months for a catamaran in Thailand are June, August and September (12 Knots, checked 27 Oct 2026):
- June: €5,062 per week, mean air temperature 28 °C, mean wind 7 kn.
- August: €4,996 per week, mean air temperature 28 °C, mean wind 8 kn.
- September: €5,016 per week, mean air temperature 28 °C, mean wind 8 kn.
The cheapest month costs 51% less than the priciest (€4,996 against €10,235; our arithmetic). All-in and per-person costs by month: Thailand catamaran cost.
When is the best weather for sailing in Thailand?
We have no verified rainfall, monsoon or sea-state source for Thailand, so we do not label any month as good or bad weather; prices roughly halve from May to September in our source, and it is worth asking your charter base why before booking those weeks. Every month averages 27–29 °C at Ao Chalong, Phuket (our calculation from 2016–2025 NASA POWER data (NASA POWER, checked 28 Oct 2026)).
Which months should you avoid in Thailand?
- On price: December, January and February, the three priciest months (December €10,140, January €10,235, February €9,938), unless those are the only weeks you can travel.
Who should go when
- On a budget: go in June, August and September (from €4,996 per week). The cheapest warm month is August at €4,996 (28 °C).
- Families: the calmest warm months by mean wind are March (6 kn, 29 °C, €9,125), April (5 kn, 29 °C, €8,165), November (6 kn, 28 °C, €9,397). Our suggestion, not a source's: calmer, warm weeks suit children and first-time crews. A catamaran sails flatter than a monohull (catamaran vs monohull).
- Experienced sailors who want wind: the windiest months at Ao Chalong, Phuket are July (8 kn, 28 °C), August (8 kn, 28 °C), September (8 kn, 28 °C). These are monthly mean wind speeds over a ~50 km grid cell: real afternoon breezes and gusts are stronger and vary by channel and coast.
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We may earn a commission if you book through our links, at no extra cost to you (disclosure). Listings and prices on SamBoat are SamBoat's own; the figures on this page come from the sources below.
How we decide "best"
- Best value: The 3 cheapest months of 12 Knots' monthly average weekly catamaran price (our ranking).
- Warm / cool: Mean air temperature of 20 °C or more at our reference point (our threshold). Cool: below 15 °C.
- Best weather: Warm (≥ 20 °C) and outside the Atlantic hurricane season (1 June–30 November, NOAA) or Tahiti's wet season (November–April, Tahiti Tourisme). Not given where we have no season or rainfall source.
- Sweet spot: Best-weather months that are not among the 3 priciest months (our rule).
- Avoid: The 3 priciest months (if price matters), plus August–October in hurricane areas (NOAA: most activity mid-August to mid-October) or the wet season in French Polynesia.
- Families: The calmest best-weather months by mean wind (our suggestion; mean wind is not gusts or sea state).
- Wind: The windiest months by mean wind speed at our reference point (our ranking).
These are our editorial thresholds applied to sourced figures, not the sources' own labels. Air temperature is not sea temperature, and mean wind is not gusts or sea state (sea temperature, waves, gusts and rainfall: not verified yet).
Sources
- 12 Knots: Catamaran charter in Thailand, checked 27 Oct 2026. Page states "Updated October 2026".
- NASA POWER: Prediction Of Worldwide Energy Resources: Monthly API (T2M, WS10M), checked 28 Oct 2026. Pulled 28 Oct 2026; 2016–2025 monthly means (our calculation).
Price data for every destination: CSV. Method: methodology.
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Frequently asked questions
What is the best month to charter a catamaran in Thailand?
On price, June, August and September (from €4,996 per week, 12 Knots, October 2026). We don't name a best-weather month for Thailand: every month averages 27–29 °C and we have no verified rainfall source.
What is the cheapest month to sail in Thailand?
August, at €4,996 per week on 12 Knots' average catamaran asking price (updated October 2026). The three cheapest months are June, August and September.
When should you avoid chartering in Thailand?
On price, December, January and February: the three priciest months, up to €10,235 per week in January.
When is it windiest for sailing in Thailand?
At our reference point (Ao Chalong, Phuket), the windiest months by mean wind speed are July (8 kn), August (8 kn), September (8 kn) and the calmest are March (6 kn), April (5 kn), November (6 kn) (our calculation from 2016–2025 NASA POWER data). Gusts and local breezes are stronger than these means.