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Best diving in September

In September, conditions peak in Cozumel, Togean Islands, Malta. We rated 10 dive regions in season this month on 5 years of wind, rain and temperature data — ranked below with their best dive sites, plus where to skip.

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Where to dive in September

  1. 1

    Cozumel

    🇲🇽 Mexico
    Peak season ☀ 31°C ☂ 4.9 mm/day ≋ 8.1 kn

    Best months: Sep · 26 dive sites

    Diving in Mexico guide →
  2. 2

    Togean Islands

    🇮🇩 Indonesia
    Peak season ☀ 30°C ☂ 5.1 mm/day ≋ 7.1 kn

    Best months: Sep, Oct · 31 dive sites

    Diving in Indonesia guide →
  3. 3

    Bunaken & Lembeh

    🇮🇩 Indonesia
    Peak season ☀ 30°C ☂ 5.9 mm/day ≋ 7.3 kn

    Best months: Aug, Sep, Oct · 38 dive sites

    Diving in Indonesia guide →
  4. 4

    Malta & Gozo

    🇲🇹 Malta
    Good season ☀ 27°C ☂ 1.3 mm/day ≋ 13.1 kn

    Best months: Jun, Jul, Aug · 38 dive sites

    Diving in Malta guide →
  5. 5

    Sharm el-Sheikh & Ras Mohammed

    🇪🇬 Egypt
    Good season ☀ 36°C ☂ 0 mm/day ≋ 14.5 kn

    Best months: Oct · 39 dive sites

    Diving in Egypt guide →
  6. 6

    San Andrés

    🇨🇴 Colombia
    Good season ☀ 29°C ☂ 7.2 mm/day ≋ 12.8 kn

    Best months: Sep · 29 dive sites

    Diving in Colombia guide →
  7. 7

    Hurghada

    🇪🇬 Egypt
    Good season ☀ 34°C ☂ 0 mm/day ≋ 17.5 kn

    Best months: Jul, Nov · 88 dive sites

    Diving in Egypt guide →
  8. 8

    Kyrenia

    🇨🇾 Cyprus
    Peak season ☀ 31°C ☂ 0.1 mm/day ≋ 9.4 kn

    Best months: Sep, Oct · 4 dive sites

    Diving in Cyprus guide →
  9. 9

    Guadeloupe

    🇫🇷 France
    Peak season ☀ 30°C ☂ 5.4 mm/day ≋ 9.3 kn

    Best months: Sep · 9 dive sites

    Diving in France guide →
  10. 10

    Hyères & Port-Cros

    🇫🇷 France
    Good season ☀ 25°C ☂ 1.8 mm/day ≋ 13.1 kn

    Best months: Aug · 20 dive sites

    Diving in France guide →

Skip in September

  • Apo Reef (Philippines) — rainy season
  • Coron (Philippines) — rainy season
  • Phuket & the Similan Islands (Thailand) — rainy season

Top dive sites in season

Playa del Carmen — Bull Shark Season Mexico Diving
🇲🇽 Mexico

Playa del Carmen — Bull Shark Season

Pregnant female bull sharks gather off Playa from November to March. 25m sand bottom dive, 8-15 sharks at close range.

Advanced 22–28m 18m Jan·Feb·Mar+
Cozumel — Palancar Caves Mexico Diving
🇲🇽 Mexico

Cozumel — Palancar Caves

Palancar Caves near Cozumel offers intermediate divers a chance to explore dramatic underwater formations and tunnels in Mexico's Caribbean.

Intermediate 15–35m
Palancar Reef Mexico Diving
🇲🇽 Mexico

Palancar Reef

Palancar Reef is a world-class dive site off Cozumel, Mexico, featuring healthy coral formations and abundant marine life year-round.

Intermediate 20m Jan·Feb·Mar+
Donut Reef Indonesia Diving
🇮🇩 Indonesia

Donut Reef

Donut Reef near Takulak Island offers year-round diving in Central Sulawesi with healthy coral communities and strong community documentation.

Beginner
Mushroom Rock Indonesia Diving
🇮🇩 Indonesia

Mushroom Rock

Mushroom Rock is an Indonesia dive site offering year-round access with documented marine life and moderate community video coverage.

Beginner Jan·Feb·Mar+
No Fear Indonesia Diving
🇮🇩 Indonesia

No Fear

No Fear dive site near Takulak Island, Central Sulawesi. Year-round diving with documented marine life and active community content.
Lembeh — Hairball Indonesia Diving
🇮🇩 Indonesia

Lembeh — Hairball

Lembeh Hairball is an intermediate dive site in Indonesia offering macro encounters in shallow water.

Intermediate 5–25m 15m
Lembeh Strait Indonesia Diving
🇮🇩 Indonesia

Lembeh Strait

Black-sand muck diving capital of the world. Pygmy seahorses, mimic octopus, blue-ringed octopus, frogfish, rhinopias — small weird stuff.

Beginner 3–25m 12m Mar·Apr·May+
Lembeh — Aer Bajo (Black Sand) Indonesia Diving
🇮🇩 Indonesia

Lembeh — Aer Bajo (Black Sand)

Aer Bajo is an intermediate black-sand dive in Lembeh, Indonesia, known for macro life and unusual critters in shallow water.

Intermediate 5–20m Jan·Feb·Mar+
The Washing Machine Malta Diving
🇲🇹 Malta

The Washing Machine

The Washing Machine is a year-round dive site off Malta featuring strong currents and rocky formations. Named for its turbulent water action, it draws experienced divers seeking dynamic conditions.

Advanced Jan·Feb·Mar+
Crystal Lagoon Dive Site Malta Diving
🇲🇹 Malta

Crystal Lagoon Dive Site

Crystal Lagoon near Comino offers year-round diving in clear Mediterranean waters with consistent marine life sightings and an active community of divers.

Beginner Jan·Feb·Mar+
Cirkewwa - Right Arch (Dive Site) Malta Diving
🇲🇹 Malta

Cirkewwa - Right Arch (Dive Site)

Cirkewwa Right Arch is a year-round Malta dive featuring an underwater rock formation with documented marine life. Accessible from the northern harbour.

Beginner Jan·Feb·Mar+
Ras Mohammed — Shark & Yolanda Reef Egypt Diving
🇪🇬 Egypt

Ras Mohammed — Shark & Yolanda Reef

Egypt's most famous dive — twin reefs at the tip of Sinai with strong currents, schooling barracuda, and the cargo of the Yolanda wreck.

Advanced 12–40m 30m Mar·Apr·May+
SS Thistlegorm Egypt Diving
🇪🇬 Egypt

SS Thistlegorm

WWII British cargo ship sunk by German bombers in 1941, holds full of motorcycles, trucks, rifles. World's best wreck dive.

Advanced 15–32m 20m Mar·Apr·May+
Ras Bob Reef Egypt Diving
🇪🇬 Egypt

Ras Bob Reef

Ras Bob Reef offers year-round diving in Egypt's Red Sea with healthy coral and diverse marine life. A accessible reef destination for divers of all levels.

Intermediate 25m Jan·Feb·Mar+
Trilogia Colombia Diving
🇨🇴 Colombia

Trilogia

Trilogia is a year-round dive destination in Colombia's Bahía de Las Sardinas. Limited depth and visibility data available; check local operators for current conditions.

Beginner
La Piramide Colombia Diving
🇨🇴 Colombia

La Piramide

La Piramide is a year-round dive destination in Colombia's Bahía de Las Sardinas, offering accessible underwater exploration with diverse marine life.

Jan·Feb·Mar+
Cantil del Hospital Colombia Diving
🇨🇴 Colombia

Cantil del Hospital

Cantil del Hospital offers year-round diving off Colombia's coast with documented marine life and accessible conditions for most skill levels.

Beginner Jan·Feb·Mar+
Dolphin House Egypt Diving
🇪🇬 Egypt

Dolphin House

Dolphin House is a year-round dive site in Egypt known for frequent dolphin encounters and vibrant reef life.

Intermediate 25m Jan·Feb·Mar+
Sha'ab El Erg Egypt Diving
🇪🇬 Egypt

Sha'ab El Erg

Sha'ab El Erg is a year-round Red Sea dive site in Egypt with healthy coral and strong species diversity.

Beginner 25m Jan·Feb·Mar+
Makadi Garden Egypt Diving
🇪🇬 Egypt

Makadi Garden

Makadi Garden offers year-round diving with healthy coral and abundant marine life in Egypt's Red Sea.

Beginner 30m Jan·Feb·Mar+
Liberty Cyprus Diving
🇨🇾 Cyprus

Liberty

Liberty is a year-round dive destination in Cyprus within a marine protected area, known for diverse marine life and accessible wreck diving.

Intermediate
Nemesis III Cyprus Diving
🇨🇾 Cyprus

Nemesis III

Nemesis III is a year-round dive site in Cyprus within a marine protected area, offering 12 recorded species observations.
Comar Cyprus Diving
🇨🇾 Cyprus

Comar

Comar is a year-round dive site in Cyprus near the St. Nicholas church in Paralimni, offering access to a submerged wreck and local marine life.

Beginner Jan·Feb·Mar+
Le Jardin de Corail France Diving
🇫🇷 France

Le Jardin de Corail

Le Jardin de Corail is a protected coral garden in Guadeloupe's national park, offering year-round diving with healthy reefs and diverse marine life.

Beginner Jan·Feb·Mar+
Pointe Carangue France Diving
🇫🇷 France

Pointe Carangue

Pointe Carangue is a year-round dive site within Guadeloupe's protected Réserve Cousteau, featuring healthy coral and abundant marine life.

Beginner Jan·Feb·Mar+
Bouée Anticyclonique France Diving
🇫🇷 France

Bouée Anticyclonique

Bouée Anticyclonique is a protected dive site in Guadeloupe's national park, known for year-round access and healthy coral ecosystems.

Beginner Jan·Feb·Mar+
Wildcat France Diving
🇫🇷 France

Wildcat

Wildcat is a year-round dive site in France's Sanctuaire Pelagos marine protected area, with 12 recorded species observations.

Jan·Feb·Mar+
Wrack 'Prosper Schiaffino' (Alias Donator) France Diving
🇫🇷 France

Wrack 'Prosper Schiaffino' (Alias Donator)

Dive the Prosper Schiaffino wreck in France's Pelagos Sanctuary. A protected site with year-round access and rich marine life.

Advanced
Ramon Membru France Diving
🇫🇷 France

Ramon Membru

Ramon Membru is a year-round dive site in the Sanctuaire Pelagos, a protected marine area off France offering encounters with pelagic species.

Intermediate Jan·Feb·Mar+

Dive guides by destination

Common questions

Where is the best diving in September?
The strongest picks for September: Cozumel (Mexico, ~31°C), Togean Islands (Indonesia, ~30°C), Bunaken (Indonesia, ~30°C), Malta (Malta, ~27°C), Sharm el-Sheikh (Egypt, ~36°C). Ranked on 5 years of climate data (wind, rain, air temperature) per dive region.
Where should you avoid diving in September?
Out of season in September: Apo Reef (rainy season), Coron (rainy season), the Similans (rainy season).
How warm is it for diving in September?
Across the recommended regions, air temperatures run about 25–36°C in September.
How are these destinations rated?
Each region is scored against its own year and against fixed diver thresholds for rain, wind and warmth — data, not a travel brochure.
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