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Goodtime Adventures

SSI Dive Resort 📍 Koh Tao, Thailand ★★★★½ 4.9 (1,451 reviews)

Photo: (c) Cheryl Stinchcomb, some rights reserved (CC BY) · via iNaturalist

Goodtime Adventures is a beachfront dive centre in Mae Haad, Koh Tao, Thailand, founded in 2008. It is an SSI and BSAC centre, offering courses from Open Water Diver to Divemaster, as well as BSAC Boat Handling courses. The centre suits divers of all levels, from beginners to those seeking professional training.

Courses offered

Course Price
Open Water Diver THB 12,000
Advanced Open Water THB 11,000
Divemaster THB 37,000
BSAC Boat Handling Course THB 19,900
BSAC Post Boat Handling Workshop THB 12,900
BSAC Diver Coxswain Assessment THB 9,500
Fun dive from THB 2,200

Prices as listed on the centre’s own website, checked October 2026. Please confirm current prices directly with the centre.

Diving with Goodtime Adventures

Diving is conducted from both boat and shore, with nitrox available. The centre visits a wide range of sites including Mango Bay, HTMS Suphairin (313), HTMS Sattakut, Buoyancy World, Shark Island, Southwest Pinnacle, Junkyard Reef, Hin Wong Bay, Lighthouse, Chumphon Pinnacle, Twins, Japanese Gardens, Sail Rock, Tanote Bay, and White Rock. According to the centre, it is the only BSAC-approved Boat Handling centre on Koh Tao and holds SSI Blue Oceans Centre and Green Fins Silver Member status.

On Google it holds an average rating of 4.9 from 1451 reviews.

Sea temperatures in the surrounding waters range from 28°C in January to 31°C in May. Species recorded near these coordinates include Mourning Dorid, Moon Wrasse and Hong Kong Butterflyfish.

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At a glance

  • One of 23 SSI centres listed in Koh Tao (44 dive centres there in total)
  • 6 dive sites within 60 km: Mae Haad Bay (1 km) · Sairee Reef (1 km) · Shark Bay (2 km) · Hin Ngam Bay (3 km) · Buddha Rock (3 km) · Htms Sattakut (3 km)
Certification SSI Dive Resort
Location Koh Tao, Thailand
Address 23, 31, Ko Tao, Ko Pha-ngan District, Surat Thani 84360, Thailand
Google Rating ★★★★½ 4.9 1,451 reviews
GPS 10.0821°, 99.8229°
Operator ID 48b8f7e4-8b23-419b-96c3-bb5ba073520d

Sea temperature through the year

Average sea surface temperature at the coordinates of Goodtime Adventures, Koh Tao, Thailand, by calendar month. The water is warmest in May at 31.4 °C and coldest in January at 28.1 °C, a spread of 3.3 kelvin over the year. Every month of the year averages 25 °C or more.

MonthJanFebMarAprMayJunJulAugSepOctNovDec
Sea temperature (°C)28.128.829.330.931.430.530.030.029.730.029.528.5

By season, the four quarterly averages at this location are spring (March to May) 30.5 °C, summer (June to August) 30.2 °C, autumn (September to November) 29.7 °C and winter (December to February) 28.5 °C.

Sea surface temperature from Open-Meteo Marine (CC BY 4.0), daily model means 2022-11 to 2024-12, sampled at the coordinates of this dive centre. Values are monthly averages of the daily means, not forecasts.

Marine life recorded in this area

Research-grade observations from iNaturalist near these coordinates.

Mourning Dorid (Jorunna funebris)
Mourning Dorid Jorunna funebris A nudibranch with a black body covered in small white or yellow spots, and a ring of black-tipped gills on its back.to 5 cm · 5-25 m · day and nightsponges on coral reefs and rocky slopesLook for its distinctive black and white pattern on sponges, its primary food source. (c) Tine Kinn Kvamme, some rights reserved (CC BY) · observation
Moon Wrasse (Thalassoma lunare)
Moon Wrasse Thalassoma lunare A colourful wrasse with a bright yellow crescent on the tail base, often seen swimming actively above the reef.to 45 cm · 1-20 m · by daycoral-rich areas of lagoons and seaward reefsWatch for its constant movement; it often darts into the water column to feed on plankton. (c) portioid, some rights reserved (CC BY) · observation
Hong Kong Butterflyfish (Chaetodon wiebeli)
Hong Kong Butterflyfish Chaetodon wiebeli (c) Gonzalo Ganda Álvarez, some rights reserved (CC BY) · observation