Marine Weather and Tide Forecast for Gulfport, MS

SHORT TERM
(This evening through Monday night)
Issued at 402 PM CST Sun Dec 14 2025

The area will experience the coldest air we have seen this season with lows falling into the 20s and lower 30s tonight and highs only warming into the mid to upper 40s on Monday. For areas north of I-10/12, a hard freeze and a threat to pipes will exist tonight as temperatures will remain below 25 degrees for several hours. In addition to the cold air temperatures, dangerous wind chills will take place tonight across the region as gusty north winds of 10 to 20 mph persist. Wind chill values will fall into the teens along and north of the I-10/12 corridor and the low to mid 20s further south. A cold weather advisory remains in effect for the entire area.

The thermal trough axis associated with the deep layer cold pool over the eastern third of the country will start to shift to the east Monday night, but that will not mean a return to milder conditions. After a chilly and sunny Monday with highs struggling to reach the mid to upper 40s per the latest 925mb temperature profiles, lows will easily fall back into the upper 20s and lower 30s for most of the region Monday night. Only the immediate coast of Louisiana and areas along the southshore of Lake Pontchartrain remaining in the mid to upper 30s.

LONG TERM
(Tuesday through Saturday night)
Issued at 402 PM CST Sun Dec 14 2025

A return to a much warmer and more humid airmass will quickly happen as we move into Tuesday and Wednesday. On Tuesday, the trough over the eastern CONUS will fully depart and a shortwave upper level ridge axis will slide in from the west. In the low to mid-levels, a broad high will also slide to the east. This will allow for a deep layer onshore flow pattern to develop, and PWATS will gradually climb back to more average levels for this time of year by Wednesday. A weak southern stream vort max will slip through on Wednesday night and Thursday, but limited mid and upper level moisture over the area will keep any shower activity isolated to widely scattered even as PWATS rise to over 1.2 inches. Once this system passes by, a zonal flow regime will develop over the area for Friday. A weak front will slightly cool temperatures, but only back to the averages for this time of year.
In the wake of the front, a zonal flow regime will dominate aloft as a broad high sits over the region. Temperatures will quickly rise back to warmer than average readings with lows in the 50s and highs in the lower 70s over the weekend.

AVIATION
(18Z TAFS) Issued at 402 PM CST Sun Dec 14 2025

VFR conditions will be in place at all of the terminals as cold and dry high pressure system moves in from the north. Winds will remain gusty from the north at all of the terminals through the overnight hours, but some improvement is expected tomorrow as the surface high becomes more centered over the region.

MARINE
Issued at 402 PM CST Sun Dec 14 2025

Strong northerly windsof between 25 and 30 knots with higher gusts will continue through Monday morning. Small Craft Advisories and Gale Warnings are in effect for the waters due to these winds. Another high will then quickly settle over the area on Tuesday, and this will allow winds to turn more easterly and fall back to less than 10 knots. Seas will also begin to subside as the winds decrease Monday night into Tuesday. Wednesday and Thursday will see a slight increase in the onshore flow to 10 to 15 knots as the pressure gradient over the waters tightens in response to a passing shortwave feature, and these winds will turn offshore on Friday. However, no signficant impacts to maritime activities are expected once we get past tonight and tomorrow morning.

PRELIMINARY POINT TEMPS/POPS
MCB 22 47 25 58 / 0 0 0 0 BTR 24 48 26 59 / 0 0 0 0 ASD 22 48 24 61 / 0 0 0 0 MSY 32 46 35 61 / 0 0 0 0 GPT 26 48 28 60 / 0 0 0 0 PQL 22 48 24 60 / 0 0 0 0

LIX WATCHES/WARNINGS/ADVISORIES
LA...Cold Weather Advisory from 9 PM this evening to 9 AM CST Monday for LAZ034>037-039-046>048-056>060-064>071-076>090.

GM...Small Craft Advisory until 9 AM CST Monday for GMZ530-532-534- 536-538-550-552-555-557.

Gale Warning until 9 AM CST Monday for GMZ570-572-575-577.

MS...Cold Weather Advisory from 9 PM this evening to 9 AM CST Monday for MSZ068>071-077-083>088.

GM...Small Craft Advisory until 9 AM CST Monday for GMZ532-534-536- 538-550-552-555-557.

Gale Warning until 9 AM CST Monday for GMZ572-575-577.