19.12
fri
fri
Day
81°F
SW 5 mph
Precip.
0%
0%
Night
81°F
SW 3 mph
Precip.
0%
0%
20.12
sat
sat
Day
81°F
S 4 mph
Precip.
0%
0%
Night
81°F
W 1 mph
Precip.
0%
0%
21.12
sun
sun
Day
81°F
S 7 mph
Precip.
0%
0%
Night
81°F
S 3 mph
Precip.
0%
0%
22.12
mon
mon
Day
81°F
S 11 mph
Precip.
81%
81%
Night
81°F
SW 4 mph
Precip.
0%
0%
23.12
tue
tue
Day
81°F
SW 5 mph
Precip.
20%
20%
Night
81°F
NE 2 mph
Precip.
0%
0%
24.12
wed
wed
Day
81°F
S 2 mph
Precip.
0%
0%
Night
81°F
N 1 mph
Precip.
0%
0%
25.12
thu
thu
Day
81°F
NW 2 mph
Precip.
0%
0%
Night
81°F
NW 3 mph
Precip.
0%
0%
26.12
fri
fri
Day
81°F
NW 2 mph
Precip.
0%
0%
Night
81°F
NW 4 mph
Precip.
0%
0%
27.12
sat
sat
Day
81°F
W 3 mph
Precip.
0%
0%
Night
81°F
NW 4 mph
Precip.
0%
0%
28.12
sun
sun
Day
81°F
SW 3 mph
Precip.
0%
0%
Night
81°F
SW 2 mph
Precip.
0%
0%
29.12
mon
mon
Day
81°F
NW 4 mph
Precip.
0%
0%
Night
81°F
NW 4 mph
Precip.
0%
0%
30.12
tue
tue
Day
79°F
W 1 mph
Precip.
0%
0%
Night
81°F
W 5 mph
Precip.
0%
0%
31.12
wed
wed
Day
79°F
NW 2 mph
Precip.
0%
0%
Night
81°F
W 7 mph
Precip.
0%
0%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 81.3°F. The highest and lowest sea temperatures during the month were 82.0°F and 80.8°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 81.6°F. The highest and lowest sea temperatures during the month were 82.4°F and 80.4°F.
Air temperature in Samui, °F
Precipitation total in Samui, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Samui
Samui on a weather map
Places in Thailand:
Name
°F
24 Hours Forecast
Samui
Local time: 02:59
December 19, friday
0300
79°F
SW
8 mph
8 mph
0600
81°F
SW
9 mph
9 mph
0900
81°F
SW
7 mph
7 mph
1200
81°F
SW
5 mph
5 mph
1500
81°F
S
8 mph
8 mph
1800
81°F
SW
9 mph
9 mph
2100
81°F
SW
7 mph
7 mph
December 20, saturday
0000
81°F
SW
3 mph
3 mph
