About Similan Islands
An archipelago in the Andaman Sea off Phang Nga, a national park since 1982, famous for granite boulders, white beaches and world-class diving. Open roughly mid-October to mid-May.
Highlights
- World-class diving
- Granite boulders
- Sail Rock viewpoint
In depth on our site
Similan Islands also has a full entry on our nature page, with more photos and tips.
When to visit Similan Islands
Month by month: good, OK or less good, based on average rain and temperature (Khao Lak climate).
Best months: January, February.
- January Dry: about 42 mm on 5 rain days, max 32°C (Khao Lak climate)
- February Dry: about 30 mm on 4 rain days, max 33°C (Khao Lak climate)
- March Some rain: about 70 mm on 6 rain days, max 34°C (Khao Lak climate)
- April Some rain: about 155 mm on 14 rain days, max 34°C (Khao Lak climate)
- May Rainy season: about 345 mm on 22 rain days, max 32°C (Khao Lak climate)
- June Rainy season: about 340 mm on 21 rain days, max 31°C (Khao Lak climate)
- July Rainy season: about 365 mm on 20 rain days, max 31°C (Khao Lak climate)
- August Rainy season: about 400 mm on 22 rain days, max 31°C (Khao Lak climate)
- September Rainy season: about 465 mm on 23 rain days, max 30°C (Khao Lak climate)
- October Rainy season: about 370 mm on 22 rain days, max 31°C (Khao Lak climate)
- November Rainy season: about 210 mm on 15 rain days, max 31°C (Khao Lak climate)
- December Some rain: about 65 mm on 7 rain days, max 31°C (Khao Lak climate)
Source: climate figures from our weather page: Weather and climate.
Practical information
- Location
- Phang Nga · 8.65250, 97.64083
- Type
- 🏝️ Island / bay
Opening hours and entry fee: no reliable source found, so not listed. Ask on site or check the official website.
More photos of Similan Islands
Photographer: HanumanIX - Liveaboard boat for diving tourists on the Similan Islands, Andaman Sea Thailand Photo: Hanumanix at English Wikipedia · Public domain · Wikimedia Commons 
Divers at the en:Similan islands Photo: SIMILANSCUBA · CC BY-SA 3.0 · Wikimedia Commons 
Divers at the Similan Islands. Photo: User: (WT-shared) Similanscuba at wts wikivoyage · Public domain · Wikimedia Commons
Similan Islands on the map
Pinch to zoom; tap a point for more info. Open circles: approximate location.
