WhenToDive
A field guide to when & where

Where the water is right
right now.

A structured record of season, visibility, temperature, and sightings across the world's best dive sites. No rankings by affiliate payout. No SEO filler.

Photo: Stanislav Stelmakhovich / CC0

The dive year, at a glance

Aggregate score · 28 destinations
Jan 3.9
Feb 3.9
Mar 4.1
Apr 3.9
May 3.9
Jun 3.8
Jul 3.6
Aug 3.4
Sep 3.1
Oct 3.4
Nov 3.8
Dec 3.8
Global average score, 1 poor → 5 excellent

Start with what you know

Open full search →
By month

I have dates locked in.

Show destinations at their seasonal peak for a given month, ranked by conditions and wildlife.

By species

I'm chasing a creature.

Whale sharks, manta aggregations, sardine run — pick a species and we'll find the window.

By destination

I know where I want to go.

Jump to a destination page for the full 12-month profile, dive sites, and seasonal species notes.

Diving now — April's best

Full April guide →
  1. Fuvahmulah

    Fuvahmulah

    Maldives · indian ocean
    28–30°C water viz 20–30m

    Peak: Tiger Shark · Scalloped Hammerhead · Whale Shark

    5
  2. Jardines de la Reina

    Jardines de la Reina

    Cuba · caribbean
    25–27°C water viz 25–40m

    Peak: Silky Shark · Saltwater Crocodile (American Crocodile)

    5
  3. Malapascua

    Malapascua

    Philippines · southeast asia
    28–30°C water viz 20–30m

    Peak: Pelagic Thresher Shark · Frogfish

    5
  4. Marsa Alam

    Marsa Alam

    Egypt · red sea
    23–25°C water viz 20–30m

    Peak: Dugong

    5
  5. Ningaloo

    Ningaloo

    Australia · pacific
    25–27°C water viz 20–30m

    Peak: Whale Shark · Reef Manta Ray · Dugong

    5
  6. Palau

    Palau

    Palau · pacific
    28–30°C water viz 25–40m

    Peak: Reef Manta Ray · Mandarinfish · Pygmy Seahorse

    5
  7. Red Sea — Brothers, Daedalus & Elphinstone

    Red Sea — Brothers, Daedalus & Elphinstone

    Egypt · red sea
    23–25°C water viz 25–40m
    5
  8. Socorro (Revillagigedos)

    Socorro (Revillagigedos)

    Mexico · eastern pacific
    22–25°C water viz 20–30m

    Peak: Giant Oceanic Manta Ray · Humpback Whale · Silky Shark

    5

The marquee encounters

All species →

Browse the oceans

All destinations →
The method

Structured data, not travel-blog anecdotes.

Every destination is scored month-by-month on water temperature, visibility, conditions, and species presence — sourced from operator logs, ocean datasets, and dive report archives. Each field is citable. No sponsored rankings.

Read the methodology →
Destinations
28
globally significant dive sites
Species profiled
31+
with seasonal presence maps
Data points
1,008
destination × month × field
Last updated
April
2026