Tonga

Koulo

Koulo in Ha‘apai, Tonga, is a small coastal locale with limited diving activity. The Ha‘apai Islands offer scattered reefs and calm waters, but Koulo itself has no established dive centers or prolific dive sites. For divers, the region is more about boat access to nearby reefs and potential visits to surrounding islets, with conditions generally warm and clear when accessible. If you’re focusing on a dedicated dive trip, plan to base in a larger hub within Tonga for day trips to known sites, or explore freshwater options nearby if available in the broader archipelago, though local options are limited.

Essential information for traveling in Tonga

About Tonga

Sea
South Pacific Ocean
Timezone
Pacific/Tongatapu
Languages
EN TO
Demonym
Tongan
Phone prefix
+676

Practicalities

Currency
TOP
Voltage
240
Plug type
Type I
Airports
TBU VAV HPA

Diving specifics

Temperature
°C
Depth units
meters
Pressure
bar
Regulators
DIN Yoke (INT)

Dive sites and dive centers around Koulo

Nearby Dive Sites (1)

Nearby cities for scuba diving around Koulo

The best time to dive in Koulo

The best months to dive in Koulo are from January to Febuary. Temperatures are confortable (27°C), currents are mild and the visibility is at its best.

Excellent Good Fair Mitigated
01 - Jan.
27 °C 28 °C 4/10
02 - Feb.
27 °C 29 °C 4/10
03 - Mar.
27 °C 28 °C 4/10
04 - Apr.
27 °C 28 °C 4/10
05 - May
25 °C 26 °C 4/10
06 - Jun.
25 °C 26 °C 4/10
07 - Jul.
23 °C 25 °C 5/10
08 - Aug.
23 °C 25 °C 5/10
09 - Sept.
23 °C 25 °C 5/10
10 - Oct.
24 °C 25 °C 5/10
11 - Nov.
25 °C 26 °C 4/10
12 - Dec.
26 °C 27 °C 5/10

Based on last year's weather. Scores compare months for this destination only and are indicative. A mitigated month may still suit many divers.

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