General conditions
Thailand is a year-round sailing destination. There are two main seasons, which are called the wet and the dry season, or the SW or NE monsoon respectively. Seasonal winds tend to be predictable, although there may be inconsistencies as they change from one to the other.

North-east monsoon (Dry – November to April)
The NE monsoon has wind speeds of force 2 to 4 from the north-east. The winds are quite stable during this period and temperatures are usually in the region of 86°F (30°C). The weather is consistently dry and sunny, with ideal conditions for sailing. If you wish to visit the Similan Islands you can only do so during the north-east monsoon and you will be asked to sign a Moorings disclaimer before you leave the base.

South-west monsoon (Wet – May to October) 
The SW monsoon has winds of force 2 to 6, from the south-west. There is more wind during this season, making sailing a bit more exhilarating than the NE season. There are some rainy periods, sometimes prolonged but usually only lasting approximately one to two hours in the late afternoon or early evening. The direction of the prevailing wind means that the anchorages on the West Coast of Phuket cannot be used during this period. You are advised to anchor on the east coasts of the islands or in sheltered bays. There is still safe sailing in Phang Nga Bay right down to Koh Phi Phi with larger swells in more exposed areas. The Similan Islands are closed to visitors during thesouth-west monsoon. During September and October there can be extended periods of rain sometimes lasting up to five days at a time.

Historical weather (averages by month)


Month

°F Max

°F Min

°C Max

°C Min

Avg Precip (in)

Avg Precip (mm)

Avg Water Temp (°F)

Avg Water Temp (°C)

Avg Wind Speed (knots)

January

89

73

32

23

1.6

40

82

28

NE 10-20 

February

91

73

33

23

1.1

27

82

28

NE 10-20 

March

93

75

34

24

2.3

59

84

29

NE 10-20 

April

95

75

35

24

5.5

140

86

30

NE 10-15 

May

98

75

37

24

13.1

334

86

30

SW 10-20 

June

91

75

33

24

10.8

275

86

30

SW 10-25 

July

89

75

32

24

11.2

284

84

29

SW 10-25 

August

89

75

32

24

10.4

265

84

29

SW 10-20 

September

87

75

31

24

15.7

398

84

29

SW 10-20 

October

87

75

31

24

13.3

339

84

29

SW 10-20 

November

87

75

31

24

7.4

187

84

29

NE 10-20 

December

87

73

31

23

2.6

66

82

28

NE 10-20 

Tides
Thailand has two high tides per day. The range varies from half a metre to just over three metres. The Ao Po marina has instant all tide access to Phang Nga bay. The latest that a Moorings yacht can depart from the marina is 5.00 p.m. as the nearest anchorage is half an hour away and all yachts must be anchored by 5.30 p.m. The area and yacht briefings take up to an hour each and shopping for provisions will take around three hours including taxi transfers. Therefore, if you wish to depart on the day your charter starts you need to arrive no later than 12.00 noon if you are doing your own provisioning or 3.00 p.m. if you have provisioned online.

Tide tables for our Phuket base can be found at www.phuketgazette.com/tidetable

Weather forecast
The base provides clients with daily weather forecasts.

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