Gold Coast
Boynton Beach Water Temperature
Boynton Inlet and the reef line a few hundred yards off the sand.
Sea-surface temperature
Very warmHolding steady · last two weeks
That is right about average for this time of year, and holding steady over the last two weeks. The November average here is 81°F.
Updated Saturday, November 7 — sea-surface temperature modeled for Boynton Beach by Open-Meteo.
Out in the open Gulf, NOAA buoy LKWF1 — 5 miles offshore — is reading 84°F. Deep water offshore runs cooler than the shallows in summer and warmer in winter, so it won't match the beach.
For swimming
Very warm
Bath-warm. Pleasant, though it stops being much relief from the heat of the day.
For fishing
Hot — fish the edges of the day
Early and late is the play. Through the middle of the day fish drop into deeper channels and passes where there's moving water and more oxygen.
The last two weeks
| Date | Average |
|---|---|
| Oct 25 | 82.9°F |
| Oct 26 | 82.9°F |
| Oct 27 | 82.9°F |
| Oct 28 | 82.4°F |
| Oct 29 | 82.8°F |
| Oct 30 | 82.9°F |
| Oct 31 | 82.9°F |
| Nov 1 | 82.8°F |
| Nov 2 | 82.4°F |
| Nov 3 | 82.2°F |
| Nov 4 | 81.5°F |
| Nov 5 | 81.7°F |
| Nov 6 | 81.9°F |
| Nov 7 | 81.9°F |
Boynton Beach water temperature by month
Averaged from 3 years of daily sea-surface temperature (2023–2025). The range column is the coolest and warmest daily average recorded in that month over the period — a guide to how much any given year can differ, not a record high and low.
| Month | Range | Average |
|---|---|---|
JanJanuary Warm | 73–78°F | 75°F |
FebFebruary Warm | 73–78°F | 76°F |
MarMarch Warm | 74–78°F | 76°F |
AprApril Warm | 76–80°F | 78°F |
MayMay Warm | 78–84°F | 81°F |
JunJune Very warm | 82–86°F | 84°F |
JulJuly Very warm | 84–89°F | 87°F |
AugAugust Bath water | 86–89°F | 88°F |
SepSeptember Very warm | 85–88°F | 87°F |
OctOctober Very warm | 82–86°F | 84°F |
NovNovembernow Warm | 78–83°F | 81°F |
DecDecember Warm | 76–82°F | 78°F |
Warmest
88°FAugust
Coolest
75°FJanuary
Warmest on average in August at 88°F; coolest in January at 75°F.
The water at Boynton Beach
Boynton Inlet is small, narrow, and ferocious — a huge volume of Lake Worth Lagoon squeezing through a short cut, which makes it one of the most reliable snook and tarpon spots on the Gold Coast and one of the trickier ones to run. Just outside, the reef line sits within a few hundred yards of the beach, holding mutton snapper, permit, and kingfish on a very short run.
Boynton Inlet & the Atlantic
What moves the water temperature here
The Gulf shelf off this coast is shallow, which is why the water swings so much more between summer and winter than open ocean at the same latitude does. Shallow water heats fast and gives that heat up fast: a single strong winter cold front can pull the inshore bays several degrees down in a couple of days, while the beaches a mile offshore barely move. Wind direction matters too — a sustained offshore breeze can pull cooler water up from below and drop the beach temperature noticeably in a morning.
Inshore bays, canals and flats run warmer than the beach through the summer and colder through the winter, for the same reason. The reading above is for the open water at Boynton Beach; expect the back bays to be a few degrees either side of it depending on the season.
Common questions
- What is the water temperature at Boynton Beach right now?
- The water at Boynton Beach is currently about 82°F (28°C). The November average here is 81°F.
- Is the water warm enough to swim at Boynton Beach in November?
- November averages 81°F at Boynton Beach, which most people would call warm. About as good as it gets — warm enough to stay in for hours without getting chilled.
- When is the water warmest at Boynton Beach?
- August is the warmest month on average at 88°F, and January the coolest at 75°F. 12 months of the year average 75°F or above.
- Why does the water temperature change so quickly here?
- The Gulf shelf off this coast is shallow, so it heats and cools far faster than deep open ocean. A strong winter cold front can pull the inshore water down several degrees in a couple of days, and a sustained offshore wind can drop beach temperatures in a single morning by pulling cooler water up from below.