Koh Ran Gai

Thailand15 m maxbeginner

Explore more dive sites in Thailand

Conditions & tides

Koh Ran GaiThailand · 15 m

Fair · 4/5

conditions visualisation

Fair4/5

Some chop right now — best window today 7 AM–5 PM.

Wind16 kn W

Current~0.3 kn SSE · model

Swell

0.1 m · 3s · SW

Water

30 °C

Conditions through the day

6 AM6 PM

Calmest current near slack — 06:45 AM local

Sunrise 06:10 AM · Sunset 06:16 PM local

Show details

Tide · local

Outlook — select a day for full conditions

On-face swell 0.3 m — the component of the swell aimed at this site’s exposed face. Current is a regional model value (Copernicus, ~9 km grid) — a guide to the area, not a precise reef measurement. Imagery © Esri · not depth or visibility.

Scored by DiveConnect's site-physics model

Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.

Dived here today? How were conditions vs. what we showed?

About this site

Koh Ran Gai lies off the coast of Thailand at the given coordinates, in the Gulf of Thailand near the Chumphon area. The site reaches a maximum depth of around 15 metres and is considered a beginner dive.

AI overview

Marine life here

Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.

Mourning DoridJorunna funebrisReported here · unconfirmed
Gem DorisDendrodoris krusensterniiReported here · unconfirmed

Diver notes

Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.

No notes yet. Dived here? Be the first to leave a tip.

Contribute to this site

Share a write-up or a photo. Submissions are reviewed before they appear on the page.

0/4000 (min 40)

Nearby dive sites

Koh RanThailand2.3 km Sam LaemChumphon, Thailand21.1 km Koh TaluThailand31.2 km Hin Pae / Rocky PinnacleChumphon, Thailand35.3 km Hin Chedi / Rhino HornsChumphon, Thailand36.4 km Koh Ngam Noi / Vietnamese IslandChumphon, Thailand37.1 km

Shops that dive here

No shops have listed this site yet.