Skip to content
seatemperatures.net

Warmest sea in United States in July

4,477 coastal locations in United States ranked by their typical July sea temperature. Region-wide average in July: 22.2°C. The top of the list is where to find the warmest swimming this month.

Warmest in July

Apollo Beach

30.8°C July mean in United States

Regional July average

22.2°C

across all 4,477 coastal locations in United States

Vs annual mean

+6.0°C

above the year-round regional average

What the United States sea feels like in July

Water at this temperature is very pleasant to swim in. If you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.

United States monthly average 10.0°C to 22.6°C
J
F
M
A
M
J
J
A
S
O
N
D
  • Warmest month August 22.6°C
  • Coldest month February 10.0°C
  • Annual mean 16.2°C
  • Months above 20°C 3 of 12

Where July fits in the year

July sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve United States month rankings:

United States sea temperature map (live)

The map shows today's latest reading at every United States location. The list below is based on the typical July mean, useful for trip planning weeks or months ahead.

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 United States locations in July

Sorted by the typical July mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location July mean
1 Apollo Beach Florida 30.8°C
2 Bayshore Gardens Florida 30.8°C
3 Bradenton Florida 30.8°C
4 Coquina Beach Florida 30.8°C
5 Cortez Florida 30.8°C
6 Cypress Point Park Florida 30.8°C
7 Feather Sound Florida 30.8°C
8 Gandy Florida 30.8°C
9 Gibsonton Florida 30.8°C
10 Gulf Gate Estates Florida 30.8°C
11 Holmes Beach Florida 30.8°C
12 Lido Key Florida 30.8°C
13 Longboat Key Florida 30.8°C
14 Ruskin Florida 30.8°C
15 Safety Harbor Florida 30.8°C
16 Sarasota Florida 30.8°C
17 Siesta Key Florida 30.8°C
18 South Pasadena Florida 30.8°C
19 St Petersburg Florida 30.8°C
20 Tampa Bay Florida 30.8°C
21 Tampa Florida 30.8°C
22 Whitfield Florida 30.8°C
23 Anna Maria Key, city pier, Florida Florida 30.8°C
24 Apollo Beach, Hillsborough Bay, Tampa Bay, Florida Florida 30.8°C
25 Ballast Point, Tampa Florida 30.8°C
Show 25 more ▸
26 Bay Aristocrat Village, Old Tampa Bay, Florida Florida 30.8°C
27 CSX Rockport, Mckay Bay Entrance Florida 30.8°C
28 Davis Island, Hillsborough Bay, Florida Florida 30.8°C
29 Davis Islands Florida 30.8°C
30 East Bay (Tampa) Florida 30.8°C
31 Gandy Bridge, Old Tampa Bay, Florida Florida 30.8°C
32 Gulfport, Boca Ciega Bay, Florida Florida 30.8°C
33 Isla Del Sol Florida 30.8°C
34 Little Manatee Heights Florida 30.8°C
35 Little Manatee River Florida 30.8°C
36 Mullet Key Channel (Skyway), Tampa Bay Florida 30.8°C
37 Newman Branch, Tampa Bay Florida 30.8°C
38 Pass-a-Grille Beach, Boca Ciega Bay, Florida Florida 30.8°C
39 Pendola Point, Hillsborough Bay, Florida Florida 30.8°C
40 Point Pinellas, Florida Florida 30.8°C
41 Port Manatee, Tampa Bay Florida 30.8°C
42 Port Tampa, Old Tampa Bay Florida 30.8°C
43 Redfish Point, Manatee River, Florida Florida 30.8°C
44 Safety Harbor, Old Tampa Bay Florida 30.8°C
45 Saint Petersburg Florida 30.8°C
46 Shell Point, Florida Florida 30.8°C
47 St. Petersburg, Tampa Bay Florida 30.8°C
48 Cape Sable, East Cape, Florida Florida 30.8°C
49 Lostmans River entrance, Florida Florida 30.8°C
50 Onion Key Bay Florida 30.8°C

Coldest 10 in United States in July

Same data the other way. Helpful if you want to know which United States coasts to avoid for swimming in July.

# Location July mean
1 Prudhoe Bay #2 Alaska -0.3°C
2 Cross Island (Dinkum Sands) Alaska -0.1°C
3 Prudhoe Bay Alaska 0.1°C
4 Barrow Alaska 0.4°C
5 Point Barrow, Alaska Alaska 0.7°C
6 Point Barrow Alaska 0.7°C
7 Barrow (offshore) Alaska 0.7°C
8 Flaxman Island Alaska 0.8°C
9 Barter Island Alaska 1.8°C
10 Lake Sakakawea North Dakota 3.5°C

More on this region