Koh Samui in March: weather, sea & travel advice
Koh Samui in March is especially suited to beach holidays, family holidays and city breaks. Days are around 29 °C (warm), and the sea is about 29 °C. With about 6 rainy days it is dry.
Koh Samui · MarchPhoto: Sonia Selivonchik · CC BY-SA 4.0Climate facts
- Day
- 29 °C
- Night
- 27 °C
- Sea
- 29 °C
- Rainy days
- 6 rainy days
- Sun
- 8 h/day
- Humidity
- 78 %
Suitability by travel type
BeachExcellent87/100
City breakExcellent81/100
ActiveGood65/100
FamilyExcellent83/100
In favour
- Pleasant daytime temperatures around 29 °C
- Warm, swimmable sea (29 °C)
To consider
- No significant drawbacks.
All months at a glance
27J
28F
29M
30A
30M
30J
29J
29A
29S
28O
28N
28D
6J
4F
6M
8A
10M
8J
8J
9A
11S
16O
19N
13D
Similar destinations in March
Frequently asked questions
How warm is Koh Samui in March?
Daytime highs average around 29 °C, with nights around 27 °C.
Can you swim in Koh Samui in March?
The sea is about 29 °C (very warm).
Does it rain a lot in Koh Samui in March?
On the long-term average, expect about 6 rainy days.
When is the best time to visit Koh Samui?
The most favourable months are usually the ones highlighted on the overview page. Values are historical averages, not a forecast.