Scuba diving in Santorini
Diving in Santorini comes down to water temperature and calm seas. The most comfortable months are July to September, with highs around 85°F (29°C) and the sea at about 75°F (24°C).
Photo: Giles Laurent, CC BY-SA 4.0
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How to pick a good dive
- Non-certified divers can try a 'discover scuba' dive with an instructor; certified divers should bring their card and logbook.
- Ask about the water temperature and the wetsuit thickness provided for that month.
- Leave 18 to 24 hours between your last dive and a flight.
- Check group size per guide; four to six divers per guide is a good sign.
Santorini month by month
Averages for Santorini; sea temperatures offshore, 1991–2020.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F (°C) | 58 (14) | 58 (15) | 61 (16) | 67 (20) | 74 (23) | 82 (28) | 86 (30) | 86 (30) | 81 (27) | 73 (23) | 67 (19) | 60 (16) |
| Low °F (°C) | 50 (10) | 51 (10) | 52 (11) | 56 (14) | 62 (17) | 70 (21) | 74 (23) | 74 (24) | 70 (21) | 64 (18) | 58 (15) | 53 (12) |
| Rain, in | 2.1 | 1.6 | 1.8 | 0.5 | 0.3 | 0.1 | 0.0 | 0.1 | 0.1 | 0.6 | 1.3 | 2.1 |
| Sea °F (°C) | 62 (17) | 61 (16) | 61 (16) | 62 (17) | 66 (19) | 72 (22) | 75 (24) | 76 (24) | 75 (24) | 72 (22) | 68 (20) | 64 (18) |
| Sunset (15th) | 5:26 pm | 5:59 pm | 6:25 pm | 7:52 pm | 8:18 pm | 8:38 pm | 8:37 pm | 8:10 pm | 7:27 pm | 6:43 pm | 5:10 pm | 5:04 pm |
Questions
When is the best time for scuba diving in Santorini?
July to September. Expect highs around 85°F (29°C) and the sea at about 75°F (24°C). The least comfortable months are January and February, when the sea drops to about 61°F.
How warm is the water in Santorini?
The sea averages 61°F (16°C) in February and 76°F (24°C) in August. Below about 75°F most people want a wetsuit for a long swim or dive.
Where can I book scuba diving in Santorini?
The tours above book on Viator. Compare group size, duration, what is included and the cancellation terms before you pick one.
