Catalina Island
Catalina Islands are located 12 kilometres off the coast of Northern Guanacaste in Costa Rica on the
Explore Guanacaste
Guanacaste is located in the northwest of Costa Rica, bordering the Pacific Ocean, and is known for its beaches and rich biodiversity, both above and below the water. This area embodies what the Pacific Ocean has to offer. It may not be the location to visit if flourishing, colorful coral reefs are what divers are looking for, but it does provide some really stunning and unique volcanic rock formation topography and an abundance of larger marine species for divers to admire. This tropical area has pleasant weather conditions throughout the year with water temperatures ranging between 23°C–32°C/73°F–90°F. The colder winter months, January and February, bring with them migratory species, including humpback whales, manta rays, and pilot whales, while the rainy season, which runs from May to November, increases the nutrients in the water and attracts more shark species, including whitetip reef sharks and bull sharks. The main three areas visited from the dive centers and dive resorts here are Catalina Island, Playa del Coco, and Bat Island.
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Diving in Guanacaste
Guanacaste, located in northwestern Costa Rica, offers a variety of top-notch dive sites that attract diving enthusiasts worldwide. The Catalina Islands are renowned for their thrilling drift dives where divers can encounter large schools of manta rays. For those interested in wrecks, the "Bajo Negro" site near the Santa Catalina Islands boasts sunken vessels teeming with marine life, making it a highlight for wreck diving aficionados.
For shore diving, Playa Hermosa provides easy access to vibrant coral reefs and an array of marine species, offering a fantastic option for divers who prefer staying on land. Additionally, night dives in the Gulf of Papagayo reveal a mesmerizing display of bioluminescent organisms and nocturnal marine life, creating a unique underwater spectacle. With both shore and liveaboard diving options available, Guanacaste caters to diverse preferences, ensuring an unforgettable experience for all divers.
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The best Months to Dive in Guanacaste
Guanacaste, a province in northwestern Costa Rica, offers excellent diving conditions throughout the year. The water temperatures range from 23°C/73°F in cooler months to 29°C/84°F during warmer months, making it a comfortable diving destination year-round. Visibility typically ranges from 5 meters/16 feet to 30 meters/98 feet, influenced mainly by plankton blooms and seasonal weather changes.
Diving is possible all year, though December to April offers the best conditions due to the dry season's calm seas and reduced runoff. From May to November, the rainy season can bring stronger winds and currents, slightly decreasing visibility. Despite these factors, dedicated divers can still enjoy the rich marine life during these months, as the conditions remain generally favorable.
The best Months to Dive in Guanacaste
Guanacaste, Costa Rica, is rich in marine biodiversity, offering divers an opportunity to explore a vibrant underwater world. Among the common reef fish are species such as angelfish, butterflyfish, and parrotfish, which grace the colorful coral formations. These species can be seen year-round, making them a staple of the diving experience in this region.
Seasonally, divers may encounter larger marine life such as the majestic manta ray, most likely from November to April. Sightings of sea turtles, including the Olive Ridley and Pacific green turtles, are also common during these months as they migrate through the area. Additionally, white-tip reef sharks are frequently spotted, particularly around the deeper reefs and rocky outcrops. These species highlight the richness of Guanacaste’s marine life and provide exciting opportunities for divers throughout the year.
Wildlife Sightings are Based on User Generated Content
The image shown is a representative illustration and does not depict every individual animal in this category.
Total number of species approx.: 200
Alamy-WaterFrame
Moray Eel
2.2k Sightings
J
182
F
88
M
172
A
147
M
195
J
199
J
334
A
270
S
116
O
100
N
204
D
182
The image shown is a representative illustration and does not depict every individual animal in this category.
Total number of species approx.: 25
iStock/Juliosanjuan
Eagle Ray
1.3k Sightings
J
91
F
44
M
143
A
84
M
106
J
93
J
192
A
170
S
65
O
61
N
90
D
117
The image shown is a representative illustration and does not depict every individual animal in this category.
Total number of species approx.: 300
Alamy/Reinhard Dirscherl
Octopus
707 Sightings
J
17
F
18
M
51
A
35
M
73
J
78
J
159
A
113
S
21
O
33
N
46
D
63
iStock/Divepic
Giant Oceanic Manta Ray
577 Sightings
J
71
F
70
M
186
A
117
M
56
J
17
J
7
A
0
S
16
O
6
N
20
D
11
Shutterstock-Shane Myers Photography
Green Turtle
398 Sightings
J
34
F
25
M
11
A
11
M
22
J
15
J
43
A
70
S
21
O
36
N
53
D
57
iStock/HakBak1979
Bull Shark
270 Sightings
J
1
F
0
M
1
A
8
M
46
J
43
J
73
A
53
S
35
O
5
N
5
D
0
Alamy/National Geographic Image Collection
Oceanic Whitetip Shark
179 Sightings
J
25
F
13
M
22
A
23
M
3
J
10
J
19
A
22
S
6
O
0
N
19
D
17
Shutterstock-Andrey Armyagov
Hawksbill Turtle
112 Sightings
J
8
F
1
M
6
A
0
M
16
J
10
J
5
A
16
S
10
O
5
N
12
D
23
iStock-crisod
Reef Manta Ray
92 Sightings
J
2
F
7
M
32
A
23
M
15
J
1
J
1
A
3
S
1
O
3
N
0
D
4
iStock-June Jacobsen
Whitetip Reef Shark
3k Sightings
J
265
F
147
M
266
A
220
M
234
J
217
J
321
A
334
S
151
O
147
N
289
D
373
