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Thomas Reef — Wikimedia Commons | License: CC-BY-SA-3.0 | Source: http://commons.wikimedia.org/wiki/Special:FilePath/ThomasReefCorals.jpg
AdvancedBoat entry

Thomas reef

South Sinai, Egypt
5–30 m (16–98 ft) depthBoat entryRash guard or 2mm shorty typical

Boat dive — see Entry & access.

Thomas reef at a glance

Thomas reef is an advanced boat dive site in South Sinai, Egypt with depths of 5–30 m (16–98 ft). Typically most favorable Nov · from 3 years of archive data. Divers commonly see Napoleon wrasse, Jackfish / trevally, and Tuna. Recent reports put the water around 27°C (81°F). Check the latest conditions and entry details before you go.

No window today· next: tomorrow 7:00–19:00 · favorable

Forecast for this hour · 23:00 · run 3 h ago
0.1 m (0.3 ft)waves — under half a meter expected (waves — under a foot expected)

Tap a factor for its source and model point · Forecast 27°C · seasonal avg 27°C ( · Forecast 81°F · seasonal avg 81°F)

Site hazards: Very strong currents with unpredictable direction changes; the Thomas Arches lie at technical depths (~35-90m); exposed position

Read the full hazards ↓

Dive windows this week

SunNo window

0.3 m waves · 7 kn wind (1.1 ft waves · 7 kn wind)

Mon7:00–19:00 favorable

0.2 m waves · 3 kn wind (0.6 ft waves · 3 kn wind)

Tue7:00–19:00 favorable

0.2 m waves · 4 kn wind (0.6 ft waves · 4 kn wind)

Wed7:00–19:00 favorable

0.2 m waves · 5 kn wind (0.7 ft waves · 5 kn wind)

Thu7:00–18:00 favorable

0.2 m waves · 3 kn wind (0.7 ft waves · 3 kn wind)

Fri7:00–18:00 favorable

0.2 m waves · 10 kn wind (0.6 ft waves · 10 kn wind)

Sat7:00–18:00 favorable

0.3 m waves · 4 kn wind (0.9 ft waves · 4 kn wind)

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wave and wind forecasts. Numbers under each bar are daylight averages.

First light 6:24 · Sunrise 6:48 · Sunset 18:03 · some windows run past sunset

Source: Open-Meteo marine · model point 3.8 km from site · updated 25 Oct, 20:22 GMT+3

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Thomas reef

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

What Divers Say

Known for: Jackfish / trevally, Anthias, Barracuda
Best time: Year-round; summer for pelagics

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. January, 94% of days have historically been favorable, water has typically been 24°C (75°F), waves have typically been 0.5 m (1.7 ft), wind has typically been 14 knots
  2. February, 84% of days have historically been favorable, water has typically been 23°C (73°F), waves have typically been 0.7 m (2.2 ft), wind has typically been 17 knots
  3. March, 90% of days have historically been favorable, water has typically been 23°C (73°F), waves have typically been 0.5 m (1.7 ft), wind has typically been 15 knots
  4. April, 77% of days have historically been favorable, water has typically been 24°C (75°F), waves have typically been 0.6 m (2.0 ft), wind has typically been 17 knots
  5. May, 69% of days have historically been favorable, water has typically been 25°C (77°F), waves have typically been 0.7 m (2.1 ft), wind has typically been 18 knots
  6. June, 74% of days have historically been favorable, water has typically been 27°C (81°F), waves have typically been 0.6 m (1.9 ft), wind has typically been 18 knots
  7. July, 90% of days have historically been favorable, water has typically been 29°C (85°F), waves have typically been 0.4 m (1.3 ft), wind has typically been 16 knots
  8. August, 77% of days have historically been favorable, water has typically been 30°C (86°F), waves have typically been 0.5 m (1.8 ft), wind has typically been 18 knots
  9. September, 76% of days have historically been favorable, water has typically been 28°C (83°F), waves have typically been 0.6 m (1.9 ft), wind has typically been 17 knots
  10. October, 91% of days have historically been favorable, water has typically been 27°C (81°F), waves have typically been 0.6 m (1.8 ft), wind has typically been 16 knots
  11. November, 97% of days have historically been favorable, water has typically been 27°C (81°F), waves have typically been 0.5 m (1.6 ft), wind has typically been 14 knots, historically most favorable
  12. December, 94% of days have historically been favorable, water has typically been 25°C (78°F), waves have typically been 0.5 m (1.7 ft), wind has typically been 13 knots

November has typically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life recorded at this site, by month

Recorded observations — evidence of past sightings, not a promise of what you’ll encounter.

Species seen here

Rough labels: “Commonly seen” usually means two or more recorded sightings near this site in public dive logs (GBIF), “Occasionally seen” one; “Seasonal” and “Rarely seen” come from dive-guide research. Not a measured rate.

  • Whitetip Reef Shark recorded here Apr–May (3 records)

    Triaenodon obesusmost recent 2018

  • Green Turtle recorded here Apr, Jul (2 records)

    Chelonia mydasmost recent 2013

  • Humphead Wrasse recorded here Aug, Oct (2 records)

    Cheilinus undulatusmost recent 2009

  • Bigeye Barracuda recorded here Apr (1 record)

    Sphyraena forsterimost recent 2018

  • Blue-streak Cleaner Wrasse recorded here Apr (1 record)

    Labroides dimidiatusmost recent 2001

  • Bluespotted Lagoon Ray recorded here Apr (1 record)

    Taeniura lymmamost recent 2001

  • Branching Fire Coral recorded here Aug (1 record)

    Millepora alcicornismost recent 2009

  • Carangoides coeruleopinnatus recorded here Apr (1 record)

    most recent 2018

Newest record here: 2018. Counts are occurrence records near this site from public biodiversity datasets (GBIF), grouped by calendar month across all sampled years. Sightings vary — past records are context, not a prediction.

Fills & rentals nearby

Facts from OpenStreetMap, corrected by the community — listed by distance only. Details change; confirm with the shop.

Shop facts come from OpenStreetMap and community corrections, shown nearest first. PickADive lists facts and contacts only — no listing is sponsored or ranked.

Data updated June 2026

Site details

The smallest of the four Tiran reefs but considered the most marine-life-rich, typically dived as a drift on its current-swept walls. Its celebrated 'Thomas Arches' are a series of deep coral arches beginning around 35m and descending to roughly 90m, reserved for technical divers, while strong and shifting currents make even the recreational profile demanding.

boatcavedriftreefwall

Very strong currents with unpredictable direction changes; the Thomas Arches lie at technical depths (~35-90m); exposed position

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