Situated in the south part of the Kra land bridge, Koh Samui is one of the three most important islands in Thailand. Unlike much of the rest of the south, Koh Samui enjoys a relatively dry climate throughout the year interjected in the months of October and November by a short rainy season and by a cooler period at the end of autumn. The average temperature is 23°C and the number of hours of sunshine changes between 5 and 10. The best time to discover Koh Samui is between the omnths of February and May - the rest of the year is more uncertain weather-wise.
The weather prediction service inKoh Samui is based on a calculation which takes into account historic data from the last 10 years, as well as predictions based on certain criteria such as air temperature, humidity, water temperature, wind speed and sunshine.
Prepare your things now for your stay by taking a look at the weather predictions forKoh Samui.
- Temperature
- Bad weather
- Sunbathing
- Swimming
- Wind
- Humidity
The weather is rated on a scale from 0 to 100, with the worst weather conditions ranging between 0 and 19 and the best ranging above 79.
The overall weather comfort index is:
- Excellent (Rating between 80% and 100%)
- Good (Rating between 60% and 79%)
- Average (Rating between 40% and 59%)
- Bad (Rating between 20% and 39%)
- Very bad (Rating between 0% and 19%)
Practical advice for a stay inKoh Samui:
- Light clothes for the daytime and at night
- A light scarf to protect the shoulders and an umbrella
- A waterproof jacket for rainy days
Koh Samui: When to go ?
-
- Daytime temperature
- Night-time temperature
- Daytime humidity
- Night-time humidity
- Daytime wind
- Night-time wind
- Daytime rainfall
- Night-time rainfall
- Sunshine
- Swimming
-
January
27.9°C
25.5°C
74.0%
81.8%
4.5m/s
4.0m/s
46.7mm
50.5mm
17.5
27.7°C
-
February
28.5°C
25.9°C
73.9%
83.0%
3.8m/s
3.5m/s
32.2mm
36.7mm
18.1
28.1°C
-
March
29.1°C
26.7°C
75.4%
84.3%
3.5m/s
3.3m/s
51.0mm
55.6mm
18.1
28.9°C
-
April
30.0°C
27.4°C
75.4%
85.1%
2.9m/s
2.9m/s
64.7mm
68.8mm
15.4
30.0°C
-
May
29.5°C
27.1°C
77.4%
86.7%
4.1m/s
4.2m/s
102.8mm
77.2mm
3.9
30.2°C
-
June
29.4°C
26.9°C
76.8%
86.1%
4.7m/s
4.7m/s
77.0mm
57.5mm
3.8
29.7°C
-
July
29.1°C
26.8°C
76.8%
85.7%
5.2m/s
5.0m/s
80.0mm
55.7mm
3.1
29.5°C
-
August
29.0°C
26.7°C
77.1%
86.0%
5.7m/s
5.5m/s
85.4mm
60.0mm
1.3
29.2°C
-
September
28.7°C
26.3°C
78.6%
87.9%
4.5m/s
4.5m/s
102.2mm
72.7mm
2.6
29.2°C
-
October
28.1°C
25.8°C
81.5%
89.2%
3.6m/s
3.3m/s
134.8mm
144.5mm
4.1
29.1°C
-
November
28.0°C
26.0°C
78.6%
84.3%
4.6m/s
4.1m/s
110.8mm
147.1mm
6.8
28.8°C
-
December
27.8°C
25.6°C
75.5%
81.7%
5.0m/s
4.3m/s
84.8mm
108.6mm
10.1
28.2°C
Weather Koh Samui : Annual weather forecast chart
Koh Samui: Seven-day weather forecast
-
Friday 15 January 2021
25°C | 28°C
-
Rainfall:
0
-
Wind:
Force 14
Direction E
-
Sun:
Indicator 50
06:40:00
18:18:00
-
Moon:
08:25:00
20:22:00
-
Saturday 16 January 2021
25°C | 28°C
-
Rainfall:
0
-
Wind:
Force 15
Direction E
-
Sun:
Indicator 60
06:41:00
18:19:00
-
Moon:
09:11:00
21:14:00
-
Sunday 17 January 2021
25°C | 28°C
-
Rainfall:
2
-
Wind:
Force 16
Direction E
-
Sun:
Indicator 73
06:41:00
18:19:00
-
Moon:
09:54:00
22:02:00
-
Monday 18 January 2021
25°C | 27°C
-
Rainfall:
2
-
Wind:
Force 23
Direction E
-
Sun:
Indicator 56
06:41:00
18:20:00
-
Moon:
10:34:00
22:48:00
-
Tuesday 19 January 2021
25°C | 27°C
-
Rainfall:
0
-
Wind:
Force 16
Direction NE
-
Sun:
Indicator 33
06:41:00
18:20:00
-
Moon:
11:12:00
23:32:00
-
Wednesday 20 January 2021
24°C | 28°C
-
Rainfall:
0
-
Wind:
Force 9
Direction E
-
Sun:
Indicator 55
06:41:00
18:20:00
-
Moon:
11:49:00
Thailand: Seven-day weather forecast
Take a look at the seven-day weather forecast for the principal cities inThailand. For each destination, Easyvoyage's weather tool gives you temperature and rainfall indicators, along with wind force and direction and sunrise/sunset times. Prepare your holidays using our weather forecasts or organise your activities thanks to the weather comfort index forThailand. Whether you're getting ready to go or already on holiday, it's never been simpler to keep an eye on the weather than with Easyvoyage!