Island

Average Weather and Water Temp

Sometimes when we are planning dive trips we are looking for a place where the water and air will be warm at the time we will be there. I compiled this chart from many sources for some of the places I like to dive. Hopefully many of you will be able to make use of the information posted here.

The maps above are not real time. They are maps from June, 2013.

Island		Jan			Feb			Mar			Apr			May			Jun			Jul			Aug			Sep			Oct			Nov			Dec
	Ave. Water Temp	Ave. High Air temp	Ave. Rain	Ave. Water Temp	Ave. High Air temp	Ave. Rain	Ave. Water Temp	Ave. High Air temp	Ave. Rain	Ave. Water Temp	Ave. High Air temp	Ave. Rain	Ave. Water Temp	Ave. High Air temp	Ave. Rain	Ave. Water Temp	Ave. High Air temp	Ave. Rain	Ave. Water Temp	Ave. High Air temp	Ave. Rain	Ave. Water Temp	Ave. High Air temp	Ave. Rain	Ave. Water Temp	Ave. High Air temp	Ave. Rain	Ave. Water Temp	Ave. High Air temp	Ave. Rain	Ave. Water Temp	Ave. High Air temp	Ave. Rain	Ave. Water Temp	Ave. High Air temp	Ave. Rain
Florida Keys	69	70	1.3	70	71	2	75	73	2.3	79	77	3.6	83	80	4.1	86	82	4.5	87	84	4.8	87	84	5.1	86	83	5.3	82	79	4.6	76	74	4.2	72	71	3.8
Bahamas North	73	74	2.1	74	74	1.8	75	76	1.7	77	80	1.9	79	82	3	80	85	3.5	84	86	4.5	86	83	6.2	85	80	6.9	81	77	4.3	79	73	2.7	75	71	2
Bahamas South	74	76	1.9	74	78	1.6	75	74	1.4	76	85	1.9	78	85	4.8	81	86	4.7	83	86	6.1	86	85	6.3	80	83	7.4	78	80	8.7	75	75	2.3	74	72	1.6
Turks & Caicos	74	81	1.8	74	82	1.8	76	84	1.6	78	85	2	80	87	4.5	82	88	4.4	84	90	6.2	84	90	6.6	85	86	8	80	85	8.2	77	84	2.2	74	80	1.5
Puerto Rico	79	83	3	79	84	2.2	79	85	22.3	79	86	3.7	81	87	6.1	82	89	4.4	82	88	4.5	82	89	5.3	84	89	5.3	84	88	5.6	82	86	5.8	81	84	4.7
U.S.V.I.	79	84	3.1	79	84	1.8	79	85	2.1	79	86	3.5	81	87	6.5	82	88	3.8	82	89	3.9	82	89	4.8	83	89	5.1	84	88	4.8	82	87	5.1	81	85	4.3
Caymans	78	80	1	80	80	0	80	82	1	80	83	3	83	85	9	83	86	5	85	87	4	85	87	6	86	86	7	84	85	8	81	83	4	80	82	3
Cozumel	78	80	5.3	79	80	1.7	80	80	2.1	80	80	1.5	81	85	3.5	81	85	5.4	82	90	2.3	83	90	4.3	83	85	8.8	81	80	8.7	79	80	5.1	78	80	3.7
Belize	78	80	4.5	77	80	2.6	77	83	1.9	79	85	1.7	80	87	4.1	83	87	8.6	84	86	8.1	84	86	7	85	86	9.5	84	84	10	82	82	7	79	80	6.7
Roatan	79	81	8.6	79	82	4.7	79	83	3.2	79	85	2.3	81	86	2.7	83	86	5.8	85	86	10.4	85	86	6.9	85	87	6.1	83	87	17.8	81	84	16.4	81	84	14
Saba/St. Kits	78	82	3.2	78	82	1.9	79	83	2	80	84	2.8	80	85	3.7	81	88	3.1	82	88	3.9	84	88	4.9	84	88	5.2	82	87	4.6	79	85	5	78	83	3.6
ABCs	79	84	2.1	80	85	1.1	80	86	0.7	81	87	0.9	81	88	0.8	82	88	0.8	82	89	1.3	82	89	1.7	81	89	1.7	80	88	3.2	80	87	3.6	79	85	3.7

Cold <74	NO! Don't dive in water this cold unless you have a very good reason. Instead, find a nice warm sunny beach or bar to pass the time.
Cool 74-77	Maybe 2 dives a day and the rest of the day in the sun to warm up
Warm 78-79	With 3/2 wetsuit we can be comfortable for 3 or 4 dives
Warmer 80-82	5 dives: no problem
Hot >82	Skin or swim suit is all I will need

Average Monthly water Temperatures on Florida's Gulf Coast
Location	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC
Key West FL (average degrees in Fahrenheit)	69	70	75	78	82	85	87	87	86	82	76	72
Naples FL (averages)	66	66	71	77	82	86	87	87	86	81	73	68
St. Petersburg FL (averages)	62	64	68	74	80	84	86	86	84	78	70	64
Cedar Key FL (averages)	58	60	66	73	80	84	86	86	83	76	66	60
Pensacola FL (averages)	56	58	63	71	78	84	85	86	82	74	65	58

The above data is from the National Oceanographic data center. For current water temperatures you can visit their site at http://www.nodc.noaa.gov/dsdt/cwtg/egof.html.

So, how thick should my wet suit be for these different temperatures?

Here is guide to suggest what you might want to pack:

Water Temperature	For Warm-Blooded Divers	For Divers Prone to Cold
85 Degrees F (29 C) and Above	Dive Skin	2 mm to 1 mm shorty
80 to 84 Degrees (26-28 C)	2 mm shorty to dive skin	2 mm to 1 mm fullsuit
73 to 79 Degrees (22-25 C)	3 mm fullsuit to 2 mm shorty	5 mm to 3 mm fullsuit
66 to 72 Degrees (18-21 C)	5 mm to 3 mm fuillsuit	7 mm to 5 mm fullsuit
50 to 65 Degrees (10-17 C)	8/7 mm semidry to 7 mm wetsuit	Drysuit
Below 50 Degrees (Below 10 C)	8/7 mm semidry or drysuit	Enjoy the water from the nearest coffee shop.

To see pictures from other dive trips, click on the button below to go to my SCUBA page.

It has links to other pages of pictures and dive reports from many different dive trips over the years.

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