Trip base · Micronesia
Truk Lagoon
Wreck diving in Chuuk Lagoon, where dozens of Japanese ships and aircraft sank in 1944. The Fujikawa Maru has Zero fighters in its hold and the San Francisco Maru, at 60 m, is a technical dive. Every site here is Advanced.
Good fit for September
Wrecks
- Strength: 3 of 4 sites are wrecks
- Strength: 3 of 4 sites are in season in September
- Strength: Calm seas on almost every day
- Trade-off: Rain on almost every day
Pack a shorty or 3 mm wetsuit for September.
Why this match: 30 + 23 + 19 + 6 = 78
- Season30 / 38
- 3 of 4 sites are in season in September; calm on almost every day.
- Interests23 / 31
- Wrecks: 3 of 4 sites.
- Your level19 / 19
- No level picked, so all 4 sites count.
- Weather6 / 13
- Rain on almost every day; no real storm risk.
Month by month
Season: best April and July. Marine life uses the same scale (Best = reliable, Good = likely, Possible = possible, Off = not seen; ? = we don't know yet). Water and rain are 1991–2020 averages.
| Month | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | January: Good | February: Good | March: Good | April: Best | May: Good | June: Good | July: Best | August: Good | September: Good | October: Good | November: Good | December: Good |
| Mantas | January: Possible | February: Possible | March: Possible | April: Possible | May: Possible | June: Possible | July: Possible | August: Possible | September: Possible | October: Possible | November: Possible | December: Possible |
| Whale sharks | January: We don't know yet | February: We don't know yet | March: We don't know yet | April: We don't know yet | May: We don't know yet | June: We don't know yet | July: We don't know yet | August: We don't know yet | September: We don't know yet | October: We don't know yet | November: We don't know yet | December: We don't know yet |
| Hammerheads | January: We don't know yet | February: We don't know yet | March: We don't know yet | April: We don't know yet | May: We don't know yet | June: We don't know yet | July: We don't know yet | August: We don't know yet | September: We don't know yet | October: We don't know yet | November: We don't know yet | December: We don't know yet |
| Reef sharks | January: Likely | February: Likely | March: Likely | April: Likely | May: Likely | June: Likely | July: Likely | August: Likely | September: Likely | October: Likely | November: Likely | December: Likely |
| Turtles | January: Possible | February: Possible | March: Possible | April: Possible | May: Possible | June: Possible | July: Possible | August: Possible | September: Possible | October: Possible | November: Possible | December: Possible |
| Dolphins | January: We don't know yet | February: We don't know yet | March: We don't know yet | April: We don't know yet | May: We don't know yet | June: We don't know yet | July: We don't know yet | August: We don't know yet | September: We don't know yet | October: We don't know yet | November: We don't know yet | December: We don't know yet |
| Water | 29° | 28° | 29° | 29° | 29° | 29° | 29° | 29° | 30° | 30° | 29° | 29° |
| Rain days | 23 | 20 | 22 | 26 | 29 | 28 | 29 | 28 | 27 | 29 | 27 | 26 |
| Calm days | 5 | 4 | 7 | 14 | 22 | 26 | 29 | 28 | 27 | 27 | 18 | 6 |
| Storm risk | – | 7% | – | – | 7% | – | – | – | – | – | 17% | 7% |
Rain days: days with 1 mm or more in the ERA5 grid cell (about 30 km across); over tropical seas it counts more light-rain days than a local rain gauge would. Calm days: waves under 1.5 m and wind under 25 km/h. Storm risk: share of years with a named storm within 250 km that month (– means under 5%).
Dive sites here
4 sites on Divetip. Today's Dive scores are for reference only: live scores cover the next 48 hours, not your trip month.
Getting there
Fly to Chuuk (TKK). Road on Weno to the resort; liveaboards include the airport transfer: about 30 minutes.
Day boat or liveaboard.
What diving costs
A day of diving from about €103
A day of diving
Truk Stop Hotel Dive Center: USD 115 for 2 dives (about €103)
2 dives (morning/afternoon). Page lists the dive permit (USD 50), equipment rental and Nitrox as separate items; lunch and tax not stated. Single-diver surcharge USD 35. 2-tank outer reef dive USD 140.
Liveaboards
Truk Odyssey: USD 3,795 for 7 nights (about €3,399)
2026 rate per person, double occupancy, 6 diving days; includes all meals and drinks incl. alcohol, 30% Nitrox for certified divers, tanks and weights. Plus 5% sales tax, USD 50 dive permit, USD 30 Chuuk departure tax; rental gear extra.
Pacific Master (Master Liveaboards): USD 2,695 for 7 nights (about €2,414)
From price per person for 7 nights (USD 385 per night). Marine, park and port fees, gases and alcohol paid on board (amounts not published); USD 30 departure tax at the airport (per https://www.masterliveaboards.com/faq/truk-lagoon/).
SS Thorfinn: USD 295 for 1 night (about €264)
E-Plan price per person per day (double occupancy), 3 air dives daily, meals, airport/hotel transfers; flexible trip length. Plus 5% tax, USD 50 dive permit, Nitrox USD 12 per fill. Sunrise Plan (up to 5 dives, free EAN32) USD 371/day. Page titled 2025/2026.
Older price list, not used to compare: Rates page for 2023-24.
Prices as published by each operator (a few by a named booking agent), read on 8 November 2026. Euro amounts at the ECB reference rate of 6 November 2026. Park fees, permits and equipment are often extra. Prices change, so check with the operator before you book.
Non-divers: snorkeling by boat only
Non-divers can join a snorkeling trip (four-person minimum) or ride along on the dive boat as a passenger, but no source describes notable shore snorkeling.
Sources: trukstop.com
Book your Truk Lagoon trip
- Find dive trips and snorkeling tours on Klook (partner link, opens in a new tab)
- Search flights on Aviasales (partner link, opens in a new tab)
Partner links: we may earn a commission if you book, at no extra cost to you. Partners never change the ranking.
Where this comes from
- Water temperature: NOAA OISST v2.1 daily sea surface temperature, 1991–2020.
- Storms: NOAA IBTrACS tracks, 1991–2020. Rain, waves and wind: ERA5 reanalysis, 1991–2020. Contains modified Copernicus Climate Change Service information 2026.
- Coral heat stress: Bleaching Watch (The water is warmer than its usual warmest month, NOAA's lowest heat-stress level. Satellite data, highest level in the 7 days to 7 November 2026.) Coral bleaching: NOAA Coral Reef Watch daily 5 km Bleaching Alert Area (7-day maximum), checked twice a day.
- Seasons by site: our dive site pages. Getting there: transfer source.
Marine life sources (3 species)
- Mantas: dive-the-world.com
- Reef sharks: dive-the-world.com, bluewaterdivetravel.com
- Turtles: dive-the-world.com, bluewaterdivetravel.com, liveaboard.com
Typical values are 1991–2020 averages and our site seasons. Always check local conditions with your dive centre. Spotted something wrong? Report a correction.