When is the diving season in Grenada?

The diving season in Grenada runs March to May.

Is the diving in Grenada good for beginners?

It is better with some experience. It suits Advanced Open Water divers or equivalent, so newer divers should ask the local operator which sites fit their level.

How warm is the water in Grenada?

Between 27 and 30 °C at the surface across the year, coldest in February and warmest in September. It runs cooler below the thermocline.

What wetsuit do I need in Grenada?

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 Grenada?

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 Grenada?

The most consistently recorded species are Sperm whale (hit-or-miss) and Green turtle (likely), from 65 records within 60 km.

Does Grenada get tropical storms?

Yes. Over 30 years of records a storm passed within 250 km in Jun–Oct, most often in September at 6 of 30 years.

Is there current in Grenada?

The tide rises and falls 0.6 m around the full and new moon, against 0.3 m in between. How much of that becomes current depends on the shape of the channel.

When should I avoid Grenada?

June is the weakest month for conditions.

How do you dive Grenada?

Mostly from day boats. Trips run through the season, Mar–May.

Caribbean

Best Time to Dive in Grenada

12.03°N 61.79°W

The wildlife shows no season worth planning around, so go when the weather is best: March to May.

Best time: Mar–May
Water: 27–30 °C
Visibility: 5–20 m
Dived from: day boat
Tidal range: 0.3–0.6 m
Species logged: 2

Where it is

Caribbean

111 km across · coastline from Natural Earth 10m

Diving in Grenada — 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
	January	February	March	April	May	June	July	August	September	October	November	December
Conditions	Excellent	Good	Excellent	Excellent	Excellent	Poor	Moderate	Moderate	Poor	Good	Good	Excellent
Water temp (°C)	27	27	27	28	28	28	29	29	30	30	29	28
Visibility (m)	10–20	10–20	10–20	10–20	10–20	5–15	10–20	5–15	5–15	5–15	10–20	10–20
Marine life	Steady	Steady	Steady	Quiet	Quiet	Quiet	Busy	Quiet	Quiet	Steady	Steady	Steady
Best time			Peak	Peak	Peak

Excellent Good Moderate PoorPeak season Mar–May

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

The Grenada diving season

2 seasons

June to September · Shoulder season

4 months

JFMAMJJASOND

Water temperature: 28–30 °C
Rain: 22 days a month

Diving conditionsThe sea is calmer. It rains more.

October to May · Peak season

8 months

JFMAMJJASOND

Water temperature: 27–30 °C
Visibility: 10–20 m
Rain: 17 days a month

Diving conditionsThe sea is rougher. It rains less.

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

Grenada water temperature and weather

65 underwater observation records · 15 surveyed years of ocean data · 10 years of sea temperature

Water & weather

Grenada water temperature by month

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

10th to 90th percentile rangemonthly mean

rough days a month

Seas top 1.5 m on 15% of days. Enough to cancel a day boat

blowy days a month

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

wet days a month

1 of them bring heavy rain

Monthly sea state, wind, rain, air temperature and daylight
Month	Swell	Gusts over 40 km/h	Wet days	Heavy rain	Air	Daylight
January	1.7 m	0%	15	0	28 °C	11.4 h
February	1.8 m	0%	13	0	28 °C	11.6 h
March	1.7 m	0%	15	0	28 °C	11.9 h
April	1.5 m	0%	13	0	29 °C	12.3 h
May	1.4 m	0%	16	1	29 °C	12.6 h
June	1.7 m	0%	22	2	29 °C	12.7 h
July	1.5 m	0%	24	3	29 °C	12.6 h
August	1.2 m	0%	23	3	29 °C	12.4 h
September	1.0 m	0%	19	2	30 °C	12.1 h
October	1.4 m	0%	21	3	29 °C	11.7 h
November	1.5 m	0%	22	4	29 °C	11.4 h
December	1.7 m	0%	19	1	28 °C	11.3 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 1	January week 1: Excellent	February week 1: Excellent	March week 1: Excellent	April week 1: Excellent	May week 1: Excellent	June week 1: Poor	July week 1: Poor	August week 1: Poor	September week 1: Poor	October week 1: Good	November week 1: Excellent	December week 1: Excellent
Week 2	January week 2: Excellent	February week 2: Moderate	March week 2: Good	April week 2: Excellent	May week 2: Excellent	June week 2: Poor	July week 2: Poor	August week 2: Poor	September week 2: Moderate	October week 2: Good	November week 2: Good	December week 2: Excellent
Week 3	January week 3: Good	February week 3: Moderate	March week 3: Excellent	April week 3: Excellent	May week 3: Excellent	June week 3: Poor	July week 3: Poor	August week 3: Good	September week 3: Poor	October week 3: Moderate	November week 3: Good	December week 3: Good
Week 4	January week 4: Excellent	February week 4: Excellent	March week 4: Excellent	April week 4: Excellent	May week 4: Excellent	June week 4: Poor	July week 4: Good	August week 4: Good	September week 4: Moderate	October week 4: Moderate	November week 4: Good	December week 4: Excellent

Excellent Good Moderate PoorBest week to go: first of May

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Excellent	28 °C	1.6 m	23 km/h	51%
Week 2	Excellent	27 °C	1.6 m	23 km/h	51%
Week 3	Good	27 °C	1.7 m	24 km/h	49%
Week 4	Excellent	27 °C	1.7 m	24 km/h	46%

February, week by week

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Excellent	27 °C	1.7 m	25 km/h	45%
Week 2	Moderate	27 °C	1.8 m	27 km/h	48%
Week 3	Moderate	27 °C	1.8 m	26 km/h	49%
Week 4	Excellent	27 °C	1.5 m	24 km/h	45%

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Excellent	27 °C	1.6 m	25 km/h	48%
Week 2	Good	27 °C	1.8 m	25 km/h	48%
Week 3	Excellent	27 °C	1.7 m	25 km/h	46%
Week 4	Excellent	27 °C	1.7 m	25 km/h	47%

April, week by week

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Excellent	27 °C	1.6 m	25 km/h	42%
Week 2	Excellent	27 °C	1.5 m	25 km/h	40%
Week 3	Excellent	28 °C	1.4 m	24 km/h	46%
Week 4	Excellent	28 °C	1.3 m	24 km/h	46%

May, week by week

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Excellent	28 °C	1.3 m	25 km/h	42%
Week 2	Excellent	28 °C	1.4 m	26 km/h	46%
Week 3	Excellent	28 °C	1.5 m	25 km/h	56%
Week 4	Excellent	28 °C	1.4 m	25 km/h	61%

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Poor	28 °C	1.5 m	25 km/h	68%
Week 2	Poor	28 °C	1.7 m	26 km/h	70%
Week 3	Poor	28 °C	1.7 m	25 km/h	71%
Week 4	Poor	28 °C	1.7 m	25 km/h	78%

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Poor	28 °C	1.6 m	25 km/h	81%
Week 2	Poor	28 °C	1.5 m	24 km/h	79%
Week 3	Poor	29 °C	1.4 m	23 km/h	77%
Week 4	Good	29 °C	1.3 m	22 km/h	74%

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Poor	29 °C	1.2 m	21 km/h	75%
Week 2	Poor	29 °C	1.2 m	21 km/h	76%
Week 3	Good	29 °C	1.1 m	20 km/h	72%
Week 4	Good	30 °C	1.1 m	19 km/h	68%

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Poor	30 °C	1.0 m	19 km/h	62%
Week 2	Moderate	30 °C	1.0 m	18 km/h	58%
Week 3	Poor	30 °C	1.0 m	19 km/h	62%
Week 4	Moderate	30 °C	1.1 m	20 km/h	66%

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Good	30 °C	1.2 m	20 km/h	71%
Week 2	Good	30 °C	1.2 m	20 km/h	70%
Week 3	Moderate	30 °C	1.4 m	20 km/h	65%
Week 4	Moderate	29 °C	1.5 m	21 km/h	65%

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Excellent	29 °C	1.5 m	21 km/h	70%
Week 2	Good	29 °C	1.5 m	22 km/h	77%
Week 3	Good	29 °C	1.5 m	22 km/h	75%
Week 4	Good	29 °C	1.6 m	23 km/h	68%

December, week by week

Week	Conditions	Water	Swell	Wind	Rain chance
Week 1	Excellent	28 °C	1.7 m	23 km/h	61%
Week 2	Excellent	28 °C	1.7 m	23 km/h	61%
Week 3	Good	28 °C	1.7 m	24 km/h	68%
Week 4	Excellent	28 °C	1.6 m	24 km/h	62%

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
	January	February	March	April	May	June	July	August	September	October	November	December
Suit	January: 3 mm	February: 3 mm	March: 3 mm	April: skin	May: skin	June: skin	July: skin	August: skin	September: skin	October: skin	November: skin	December: skin

Jan–Mar3 mm full suit
Apr–Decskin or 3 mm shorty

Swell through the year

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

JanFebMarAprMayJunJulAugSepOctNovDec

Amber is over 1.5 m.

Tides

Daily tidal range across one lunar month.

Tropical storms

6 of the last 30 Septembers saw a tropical storm pass within 250 km. Anything has been recorded Jun–Oct.

JanFebMarAprMayJunJulAugSepOctNovDec

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

Grenada marine life — what you'll see diving

65 records within 60 km

Only 65 records have been logged within 60 km. A thin record is not an empty reef.

Species	When	Observed window	Reliability	Evidence	Records
Sperm whale	Mar, Jul		Hit-or-miss	3/15	16
Green turtle	Jul, Oct, Dec		Likely	5/15	8

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 Grenada — common questions

When is the best time to dive Grenada?: The wildlife shows no season worth planning around, so go when the weather is best: March to May.
When is the diving season in Grenada?: The diving season in Grenada runs March to May.
Is the diving in Grenada good for beginners?: It is better with some experience. It suits Advanced Open Water divers or equivalent, so newer divers should ask the local operator which sites fit their level.
How warm is the water in Grenada?: Between 27 and 30 °C at the surface across the year, coldest in February and warmest in September. It runs cooler below the thermocline.
What wetsuit do I need in Grenada?: 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 Grenada?: 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 Grenada?: The most consistently recorded species are Sperm whale (hit-or-miss) and Green turtle (likely), from 65 records within 60 km.
Does Grenada get tropical storms?: Yes. Over 30 years of records a storm passed within 250 km in Jun–Oct, most often in September at 6 of 30 years.
Is there current in Grenada?: The tide rises and falls 0.6 m around the full and new moon, against 0.3 m in between. How much of that becomes current depends on the shape of the channel.
When should I avoid Grenada?: June is the weakest month for conditions.
How do you dive Grenada?: Mostly from day boats. Trips run through the season, Mar–May.