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Warmest beach in Florida in May

819 coastal locations in Florida ranked by their typical May sea temperature. State-wide average in May: 26.5°C.

Warmest in May

Lostmans River entrance, Florida

28.4°C

State May average

26.5°C

across 819 coastal locations in Florida

Vs annual mean

+1.1°C

above the year-round state average

What the Florida water feels like in May

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

Florida monthly average 20.1°C to 30.1°C
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  • Warmest month August 30.1°C
  • Coldest month January 20.1°C
  • Annual mean 25.4°C
  • Months above 20°C 12 of 12

Where May fits in the year

May sits inside the state pattern shown on the left. Browse a different month for a fresh ranking.

Florida sea temperature map (live)

Today's reading at every Florida beach we track. The list below uses the typical May mean from a decade of daily history.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest Florida beaches in May

Sorted by typical May mean. Click any beach for the full location page.

# Location May mean
1 Lostmans River entrance, Florida Florida 28.4°C
2 Onion Key Bay Florida 28.4°C
3 Onion Key, Lostmans River, Florida Florida 28.4°C
4 Shark River entrance, Florida Florida 28.4°C
5 Cape Sable, East Cape, Florida Florida 28.4°C
6 Flamingo, Florida Bay, Florida Florida 28.4°C
7 Crane Keys, north side, Florida Bay, Florida Florida 28.2°C
8 Tavernier Creek, Hwy. 1 bridge, Hawk Channel, Florida Florida 28.2°C
9 East Bahia Honda Key, south end, Florida Bay, Florida Florida 28.2°C
10 Channel Five, east side, Hawk Channel, Florida Florida 28.2°C
11 Channel Five, west side, Hawk Channel, Florida Florida 28.2°C
12 Channel Two, west side, Hawk Channel, Florida Florida 28.2°C
13 Conch Key, eastern end, Florida Florida 28.2°C
14 Duck Key, Hawk Channel, Florida Florida 28.2°C
15 Grassy Key, north side, Florida Bay, Florida Florida 28.2°C
16 Grassy Key, south side, Hawk Channel, Florida Florida 28.2°C
17 Grassy Key Florida 28.2°C
18 Jewfish Hole, Long Key, Florida Bay, Florida Florida 28.2°C
19 Long Key Bight, Long Key, Florida Florida 28.2°C
20 Long Key Lake, Long Key, Florida Florida 28.2°C
21 Long Key, western end, Florida Florida 28.2°C
22 Toms Harbor Channel, Hwy. 1 bridge, Florida Florida 28.2°C
23 Toms Harbor Cut, Florida Florida 28.2°C
24 Annette Key, north end, Big Spanish Channel, Florida Florida 28.1°C
25 Big Spanish Key, Florida Florida 28.1°C
Show 25 more ▸
26 Content Keys, Content Passage, Florida Florida 28.1°C
27 Crawl Key, Big Spanish Channel, Florida Florida 28.1°C
28 Horseshoe Keys, south end, Florida Florida 28.1°C
29 Howe Key, northwest end, Florida Florida 28.1°C
30 Johnson Keys, north end, Florida Florida 28.1°C
31 Little Pine Key, north end, Florida Florida 28.1°C
32 Little Spanish Key, Spanish Banks, Florida Florida 28.1°C
33 West Bahia Honda Key, Florida Florida 28.1°C
34 Chatham River entrance, Florida Florida 28.1°C
35 Indian Key, Florida Florida 28.1°C
36 Pavilion Key Florida 28.1°C
37 Alligator Reef Florida 28.1°C
38 Channel Two, east, Lower Matecumbe Key, Fla. Bay, Florida Florida 28.1°C
39 East Key, southern end, Florida Bay, Florida Florida 28.1°C
40 Indian Key Anchorage, Lower Matecumbe Key, Florida Florida 28.1°C
41 Indian Key, Hawk Channel, Florida Florida 28.1°C
42 Lignumvitae Key, NE side, Florida Bay, Florida Florida 28.1°C
43 Lignumvitae Key, west side, Florida Bay, Florida Florida 28.1°C
44 Little Basin, Upper Matecumbe Key, Florida Bay, Florida Florida 28.1°C
45 Matecumbe Bight, Lower Matecumbe Key, Fla. Bay, Florida Florida 28.1°C
46 Matecumbe Harbor, Lower Matecumbe Key, Fla. Bay, Florida Florida 28.1°C
47 Plantation Key, Hawk Channel, Florida Florida 28.1°C
48 Shell Key Channel, Florida Bay, Florida Florida 28.1°C
49 Shell Key, northwest side, Lignumvitae Basin, Florida Florida 28.1°C
50 Snake Creek, Hwy. 1 bridge, Windley Key, Florida Florida 28.1°C

Coldest 10 in Florida in May

Same data the other way.

# Location May mean
1 Amelia City, South Amelia River, Florida Florida 24.4°C
2 Boggy Creek, 2 mi. above entrance, Nassau River, Florida Florida 24.4°C
3 Chester, Bells River Florida 24.4°C
4 Crandall, St. Marys River Florida 24.4°C
5 Cuno, Lofton Creek, Nassau River, Florida Florida 24.4°C
6 Cut 1N front range, St. Marys River Florida 24.4°C
7 Cut 2N front range, St. Marys River Florida 24.4°C
8 Edwards Creek, Nassau River Florida 24.4°C
9 Halfmoon Island, highway bridge, Nassau River, Florida Florida 24.4°C
10 Kingsley Creek, RR. bridge, Florida Florida 24.4°C

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