Your first Open Water course for €300 or less, in warm water
Best January to May
Dumaguete, Dauin & Apo Island
Philippines
Dauin's shore dives and Apo Island, in the south of Negros. Diveable all year; the dry season, January to May, is best.
- Best season:
- Jan–May
- Water:
- 25–30 °C
- Open Water course:
- €239–372
Season: dive-the-world.com · See the destination, its sites and sources

Best January to May
Moalboal
Philippines
On Cebu's west coast. All sources say it is dived year-round; January to May is the most reliable window, before the rainy season.
- Best season:
- Jan–May
- Water:
- 25–30 °C
- Open Water course:
- €239–322
Season: zubludiving.com · See the destination, its sites and sources

Best March to May
Koh Tao
Thailand
A small island in the Gulf of Thailand. The local operator Big Blue gives March to May as best: flat sea, best visibility and the whale shark season; September–October is also flat, with good whale shark chances.
- Best season:
- Mar–May, Sep–Oct
- Water:
- 26–30 °C
- Open Water course:
- €252–292
Season: bigbluediving.com · See the destination, its sites and sources
Peak December to March
Andaman Islands (Havelock & Neil)
India
Havelock and Neil, in India's Andaman Islands. The season runs October to May; avoid the June–September monsoon.
- Best season:
- Dec–Mar
- Water:
- 26–29 °C
- Open Water course:
- €264–339
Season: padi.com · See the destination, its sites and sources
Clearest water March to April
Koh Samui & Koh Phangan
Thailand
Dives around Samui, Koh Phangan and the Ang Thong marine park, in 28–30 °C water. The park's main diving season runs February to October; it usually closes from 1 November to 15 December for the monsoon.
- Best season:
- Mar–Apr, Jun–Aug
- Water:
- 28–30 °C
- Open Water course:
- €279–483
Season: thainationalparks.com · See the destination, its sites and sources
How we chose
Entry-level course (Open Water or equivalent) at €300 or less at the cheapest centre, at least two centres checked, minimum water temperature of 25 °C or more. At most two per country; ranked by course price. Prices from dive centres' own websites (October 2026).
Prices change: check with the centre before booking. No destination paid to be listed here.