Ko Samui weather in March
March is one of the best months to visit Ko Samui: highs of 29°C (84°F) and about 114 mm (4.5 in) of rain on average. Nights average 27°C (81°F) and cloud cover 49% (NASA POWER, 2001–2025 averages). It is the 3rd driest month of the year and the 6th warmest. Compared with February, it is warmer and wetter; April brings highs of 30°C (86°F) and 90 mm (3.5 in) of rain.
Is March a good time to visit Ko Samui?
best month Weather score 71/100.
Yes. March is one of the best months for weather in Ko Samui.
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Does it rain a lot in Ko Samui in March?
Some rain is normal: about 114 mm (4.5 in) falls in an average March. It is the 3rd driest month of the year.
How warm is Ko Samui in March?
Days average 29°C (84°F) and nights 27°C (81°F).
Ko Samui weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 27°C (81°F) | 26°C (79°F) | 135 mm | 60% | fair |
| February | 28°C (82°F) | 26°C (79°F) | 38 mm | 46% | best |
| March | 29°C (84°F) | 27°C (81°F) | 114 mm | 49% | best |
| April | 30°C (86°F) | 28°C (83°F) | 90 mm | 65% | best |
| May | 30°C (86°F) | 28°C (83°F) | 170 mm | 86% | fair |
| June | 30°C (85°F) | 28°C (82°F) | 167 mm | 87% | fair |
| July | 29°C (84°F) | 28°C (82°F) | 166 mm | 89% | fair |
| August | 29°C (84°F) | 27°C (81°F) | 144 mm | 89% | fair |
| September | 29°C (84°F) | 27°C (81°F) | 181 mm | 89% | fair |
| October | 28°C (83°F) | 27°C (81°F) | 246 mm | 86% | least pleasant |
| November | 28°C (83°F) | 27°C (81°F) | 375 mm | 81% | least pleasant |
| December | 28°C (82°F) | 27°C (80°F) | 262 mm | 76% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
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