Fr. Polynesia · Moorea / Tahiti

Best Time to Dive in Moorea / Tahiti, French Polynesia

17.48°S 149.86°W

Aim for July to October, when the downpours ease — 2 days a month of heavy rain instead of 6. The marine life holds steady all year, so the weather picks the month.

Best time
Jul–Oct
Water
2729 °C
Visibility
520 m
Dived from
day boat
Tidal range
0.10.3 m
Species logged
9

Worth knowing: 94% of days see seas over 1.5 m.

Where it is

Fr. Polynesia
25 kmN

111 km across · coastline from Natural Earth 10m

Diving in Moorea / Tahiti, French Polynesia — monthly breakdown

Best months at this destination

A year of scuba diving conditions at a glance. Hover a month to isolate it.

Month by month conditions, water temperature, visibility and marine life
JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
ConditionsPoorPoorExcellentPoorGoodPoorGoodGoodExcellentModerateModeratePoor
Water temp (°C)292929292928272727272828
Visibility (m)51510205155155155155155155151020515515
Marine lifeSteadySteadySteadySteadyBusySteadySteadySteadyBusySteadySteadySteady
Best timePeakPeakPeakPeak
Excellent Good Moderate PoorPeak season Jul–Oct

Long-term averages, 2016–2025. Visibility is estimated from satellite chlorophyll-a. Water temperature is the surface mean; it is cooler at depth.

The Moorea / Tahiti, French Polynesia diving season

3 seasons

May to September · Peak season

5 months
Water temperature
2729 °C
Visibility
515 m
Rain
13 days a month

Diving conditionsThe wind is up. It rains less.

October to November · Shoulder season

2 months
Water temperature
2728 °C
Visibility
1020 m
Rain
18 days a month

Diving conditionsRain is frequent topside.

December to April · Off season

5 months
Water temperature
2829 °C
Visibility
515 m
Rain
22 days a month

Diving conditionsIt rains more.

  • Water temperature is satellite sea-surface temperature, so expect it cooler below the thermocline.
  • Visibility is estimated from satellite chlorophyll-a.

French Polynesia water temperature and weather

1,042 underwater observation records · 23 surveyed years of ocean data · 10 years of sea temperature

Water & weather

Moorea / Tahiti, French Polynesia water temperature by month

The dashed line is the monthly average. Eight days in ten fall inside the band.

2627282930JanFebMarAprMayJunJulAugSepOctNovDecSea temperature (°C)

10th to 90th percentile rangemonthly mean

23
rough days a month

Seas top 1.5 m on 77% of days. Enough to cancel a day boat

1
blowy days a month

Gusts over 40 km/h, about where a day boat stays in port

18
wet days a month

4 of them bring heavy rain

Monthly sea state, wind, rain, air temperature and daylight
MonthSwellGusts over 40 km/hWet daysHeavy rainAirDaylight
January2.3 m2%24828 °C12.9 h
February2.7 m5%22828 °C12.6 h
March2.1 m1%21429 °C12.1 h
April2.8 m1%21628 °C11.6 h
May3.1 m2%14328 °C11.2 h
June3.1 m4%14327 °C11.0 h
July3.1 m2%12227 °C11.0 h
August3.0 m4%13127 °C11.4 h
September2.9 m1%14227 °C11.9 h
October2.7 m2%16427 °C12.4 h
November2.6 m1%20527 °C12.8 h
December2.2 m1%23928 °C13.0 h

Swell is the rough end of the month: nine days in ten come in under it. Sea temperature covers 10 years, waves 4.

Pick your week

48 weeks from the daily record. Darker is better, against this site's own year. Pick a month for the detail.

Conditions by week, four weeks per month
Week 1January week 1: ModerateFebruary week 1: PoorMarch week 1: GoodApril week 1: ModerateMay week 1: ModerateJune week 1: ModerateJuly week 1: GoodAugust week 1: GoodSeptember week 1: GoodOctober week 1: GoodNovember week 1: GoodDecember week 1: Poor
Week 2January week 2: PoorFebruary week 2: PoorMarch week 2: GoodApril week 2: ModerateMay week 2: ModerateJune week 2: PoorJuly week 2: ModerateAugust week 2: GoodSeptember week 2: ExcellentOctober week 2: GoodNovember week 2: ModerateDecember week 2: Poor
Week 3January week 3: PoorFebruary week 3: PoorMarch week 3: ExcellentApril week 3: PoorMay week 3: GoodJune week 3: PoorJuly week 3: GoodAugust week 3: ExcellentSeptember week 3: ExcellentOctober week 3: ModerateNovember week 3: PoorDecember week 3: Moderate
Week 4January week 4: PoorFebruary week 4: ModerateMarch week 4: ExcellentApril week 4: PoorMay week 4: ExcellentJune week 4: PoorJuly week 4: GoodAugust week 4: ExcellentSeptember week 4: ExcellentOctober week 4: ModerateNovember week 4: GoodDecember week 4: Moderate
Excellent Good Moderate PoorBest week to go: second of September

September, week by week

WeekConditionsWaterSwellWindRain chance
Week 1Good27 °C3.3 m25 km/h41%
Week 2Excellent27 °C2.9 m23 km/h38%
Week 3Excellent27 °C2.5 m23 km/h50%
Week 4Excellent27 °C2.5 m22 km/h54%

10 years of daily records, averaged into weeks.

Gear & storms

What to wear

Off the coldest water of each month, not the average — that is what the suit has to cope with.

Wetsuit thickness by month
JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
SuitJanuary: skinFebruary: skinMarch: skinApril: skinMay: skinJune: skinJuly: 3 mmAugust: 3 mmSeptember: 3 mmOctober: 3 mmNovember: skinDecember: skin
  • Nov–Junskin or 3 mm shorty
  • Jul–Oct3 mm full suit

Swell through the year

The rough end of each month — nine days in ten come in under it.

JanJanuary: 2.3 metresFebFebruary: 2.7 metresMarMarch: 2.1 metresAprApril: 2.8 metresMayMay: 3.1 metresJunJune: 3.1 metresJulJuly: 3.1 metresAugAugust: 3.0 metresSepSeptember: 2.9 metresOctOctober: 2.7 metresNovNovember: 2.6 metresDecDecember: 2.2 metres

Amber is over 1.5 m.

Tides

springs 0.3 mneaps 0.1 mneapsone lunar month
Daily tidal range across one lunar month.

Tropical storms

2 of the last 30 Februarys saw a tropical storm pass within 250 km. Anything has been recorded Jan–Feb, Nov.

JanJanuary: 1 of 30 yearsFebFebruary: 2 of 30 yearsMarMarch: 0 of 30 yearsAprApril: 0 of 30 yearsMayMay: 0 of 30 yearsJunJune: 0 of 30 yearsJulJuly: 0 of 30 yearsAugAugust: 0 of 30 yearsSepSeptember: 0 of 30 yearsOctOctober: 0 of 30 yearsNovNovember: 1 of 30 yearsDecDecember: 0 of 30 years

Share of the last 30 years with a storm that month.

  • NOAASea surface temperature, from OISST and MUR
  • ERA5Wind, waves, rain and air temperature, via Open-Meteo
  • OBISMarine species records within 60 km
  • IBTrACSTropical cyclone tracks, 1996 to 2025

Moorea / Tahiti, French Polynesia marine life — what you'll see diving

1,042 records within 60 km
SpeciesWhenObserved windowReliabilityEvidenceRecords
Blacktip reef sharkAll yearNear-guaranteed
21/23
255
Humpback whaleAug–SepNear-guaranteed
15/23
392
Green turtleAll yearLikely
12/23
132
Hawksbill turtleAll yearLikely
12/23
59
Ocellated eagle rayAll yearLikely
8/23
62
Napoleon wrasseAll yearLikely
9/23
24
Spinner dolphinMay, SepLikely
10/23
59
Whitetip reef sharkFeb, Aug, OctHit-or-miss
6/23
11
Grey reef sharkJul, OctHit-or-miss
5/23
9
Peak Present
Observed window
Months with records. Peak is where most of them fall.
Reliability
  • Near-guaranteed in 60% of surveyed years or more
  • Likely 30% to 60%
  • Hit-or-miss under 30%
Evidence
Years it was seen, out of the years anyone surveyed.
Records
OBIS sightings within 60 km.

These are sightings people logged, not a full survey of the reef. A species missing from a month may just mean nobody recorded one.

Diving Moorea / Tahiti, French Polynesia — common questions

When is the best time to dive Moorea / Tahiti, French Polynesia?
Aim for July to October, when the downpours ease — 2 days a month of heavy rain instead of 6. The marine life holds steady all year, so the weather picks the month.
When is the diving season in Moorea / Tahiti, French Polynesia?
The diving season in Moorea / Tahiti, French Polynesia runs July to October.
Is the diving in Moorea / Tahiti, French Polynesia good for beginners?
Yes. It suits Open Water divers, so it works for a first trip after certification.
How warm is the water in Moorea / Tahiti, French Polynesia?
Between 27 and 29 °C at the surface across the year, coldest in August and warmest in March. It runs cooler below the thermocline.
What wetsuit do I need in Moorea / Tahiti, French Polynesia?
A 3 mm full suit covers the coldest water of the year. In the warmest months a skin or 3 mm shorty is enough.
What is the visibility like in Moorea / Tahiti, French Polynesia?
Roughly 5 to 20 m depending on the month. That is estimated from satellite chlorophyll-a rather than measured in the water.
What will I see diving Moorea / Tahiti, French Polynesia?
The most consistently recorded species are Blacktip reef shark (near-guaranteed), Humpback whale (near-guaranteed) and Green turtle (likely), from 1,042 records within 60 km.
Does Moorea / Tahiti, French Polynesia get tropical storms?
Yes. Over 30 years of records a storm passed within 250 km in Jan–Feb, Nov, most often in February at 2 of 30 years.
Is there current in Moorea / Tahiti, French Polynesia?
The tide rises and falls 0.3 m around the full and new moon, against 0.1 m in between. How much of that becomes current depends on the shape of the channel.
When should I avoid Moorea / Tahiti, French Polynesia?
February is the weakest month for conditions.
How do you dive Moorea / Tahiti, French Polynesia?
Mostly from day boats. Trips run through the season, Jul–Oct.

Elsewhere in French Polynesia

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