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Similan Island

Similan Island 1
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Similan Island Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Similan Island year round climate

  • Spring (March–May): Average 81–83°F, hot climate. March has almost no rainfall, while April and May see gradually increasing rainfall. Common activities: Scuba diving, snorkeling, sunbathing. Recommended clothing: Light, short-sleeved clothing, swimwear, sun protection clothing.
  • Summer (June–August): Average 80–81°F, hot and humid climate. June and August have more rainfall. Common activities: Scuba diving, snorkeling, but be aware of the rainy season's impact. Recommended clothing: Light and breathable short-sleeved clothing, swimwear, rain gear.
  • Autumn (September–November): Average 79–80°F, hot climate with heavier rainfall; September is the peak of the rainy season. Common activities: Scuba diving, snorkeling, but be aware of sea conditions and rainfall. Recommended clothing: Light and breathable short-sleeved clothing, rain gear.
  • Winter (December–February): Average 80–80°F, warm climate with less rainfall. Common activities: Scuba diving, snorkeling, sunbathing. Recommended clothing: Light short-sleeved clothing, swimwear.

Similan Island climatological average

Annual average temperature: approx. 81.0°F / Annual rainfall: approx. 2962 mm / Summer humidity: 75%–85% / Rainiest month: September

Similan Island monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
80.2°F
49.1
February
80.8°F
171.3
March
81.9°F
0
April
83.3°F
40.1
May
82.6°F
445.6
June
81.7°F
578.5
July
80.8°F
0
August
80.8°F
373.6
September
79.5°F
611
October
79.5°F
287.1
November
80.1°F
292.3
December
80.1°F
113.9

Similan Island weather for the next seven days

1/1
Thursday
Sunny
82.6°F/73.3°F
1/2
Friday
Patchy rain nearby
85.3°F/71.4°F
1/3
Saturday
Patchy rain nearby
87.5°F/73.5°F
1/4
Sunday
Partly Cloudy
87.5°F/73.6°F
1/5
Monday
Sunny
85.1°F/72.2°F
1/6
Tuesday
Partly Cloudy
82°F/74.5°F
1/7
Wednesday
Partly Cloudy
82.9°F/75.4°F