821  
FZPN28 KNHC 122115  
OFFPZ8  
 
OFFSHORE WATERS FORECAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
215 PM PDT FRI SEP 12 2025  
 
OFFSHORE WATERS FORECAST FOR THE E PACIFIC WITHIN 250 NM OF  
CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR  
 
SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE AVERAGE  
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE  
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
PMZ101-130915-  
SYNOPSIS FOR THE E PACIFIC WITHIN 250 NM OF CENTRAL AMERICA,  
COLOMBIA, AND WITHIN 750 NM OF ECUADOR  
215 PM PDT FRI SEP 12 2025  
   
SYNOPSIS
 
MODERATE TO FRESH SOUTHERLY WINDS WILL PREVAIL SOUTH  
OF THE MONSOON TROUGH THROUGH THIS WEEKEND. A LONG-PERIOD  
SOUTHERN HEMISPHERE SWELL WILL MOVE THROUGH THE REGIONAL WATERS  
THIS WEEKEND LEADING TO ROUGH SEAS OFFSHORE OF SOUTH AMERICA, AND  
OVER THE CENTRAL AMERICA WATERS BY EARLY NEXT WEEK.  
 

 
 
PMZ111-130915-  
GUATEMALA AND EL SALVADOR TO 250 NM OFFSHORE-  
215 PM PDT FRI SEP 12 2025  
   
TONIGHT
 
NE WINDS 10 KT IN THE EVENING, BECOMING VARIABLE  
WINDS LESS THAN 5 KT. SEAS 3 TO 5 FT IN SW SWELL. PERIOD  
15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE  
NIGHT.    
SAT
 
NE WINDS 10 KT IN THE MORNING, BECOMING VARIABLE WINDS  
LESS THAN 5 KT. SEAS 3 TO 5 FT IN S TO SW SWELL. PERIOD  
14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE  
DAY.    
SAT NIGHT
 
E TO SE WINDS 10 KT IN THE EVENING, BECOMING  
VARIABLE WINDS LESS THAN 5 KT. SEAS 4 TO 6 FT IN S TO SW SWELL.  
PERIOD 14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH  
THE NIGHT.    
SUN
 
VARIABLE WINDS LESS THAN 5 KT. SEAS 5 TO 7 FT IN S TO SW  
SWELL. PERIOD 19 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS  
THROUGH THE DAY.    
SUN NIGHT
 
E WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW SWELL.  
PERIOD 18 SECONDS.    
MON
 
SE WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL. PERIOD  
17 SECONDS.    
MON NIGHT
 
SE WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
TUE
 
VARIABLE WINDS LESS THAN 5 KT. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 15 SECONDS.    
TUE NIGHT
 
VARIABLE WINDS LESS THAN 5 KT. SEAS 6 TO 8 FT IN S  
TO SW SWELL. PERIOD 14 SECONDS.    
WED
 
SW WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL. PERIOD  
14 SECONDS.    
WED NIGHT
 
VARIABLE WINDS LESS THAN 5 KT. SEAS 5 TO 7 FT IN S  
TO SW SWELL. PERIOD 14 SECONDS.  
 

 
 
PMZ113-130915-  
EL SALVADOR TO NORTH COSTA RICA INCLUDING THE GULFS OF FONSECA  
AND PAPAGAYO-  
215 PM PDT FRI SEP 12 2025  
   
TONIGHT
 
SE TO S WINDS 10 KT. SEAS 4 TO 6 FT IN SW SWELL.  
PERIOD 15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH  
THE NIGHT.    
SAT
 
NE WINDS 10 KT, SHIFTING TO SE IN THE AFTERNOON. SEAS  
4 TO 6 FT IN SW SWELL. PERIOD 15 SECONDS. SCATTERED SHOWERS AND  
ISOLATED TSTMS THROUGH THE DAY.    
SAT NIGHT
 
SE WINDS 10 KT. SEAS 4 TO 6 FT IN S TO SW SWELL.  
PERIOD 14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH  
THE NIGHT.    
SUN
 
E TO SE WINDS 10 KT, SHIFTING TO S IN THE AFTERNOON.  
SEAS 5 TO 7 FT IN S TO SW SWELL. PERIOD 19 SECONDS. SCATTERED  
SHOWERS AND ISOLATED TSTMS THROUGH THE DAY.    
SUN NIGHT
 
S WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 18 SECONDS.    
MON
 
S WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL. PERIOD  
17 SECONDS.    
MON NIGHT
 
VARIABLE WINDS LESS THAN 5 KT OFFSHORE GULF OF  
PAPAGAYO, AND S TO SW 10 KT ELSEWHERE. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 15 SECONDS.    
TUE
 
SW WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL. PERIOD  
15 SECONDS.    
TUE NIGHT
 
VARIABLE WINDS LESS THAN 5 KT OFFSHORE GULF OF  
PAPAGAYO, AND SW 10 KT ELSEWHERE. SEAS 5 TO 7 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS.    
WED
 
VARIABLE WINDS LESS THAN 5 KT OFFSHORE GULF OF PAPAGAYO,  
AND W 10 KT ELSEWHERE. SEAS 5 TO 7 FT IN S TO SW SWELL. PERIOD  
14 SECONDS.    
WED NIGHT
 
VARIABLE WINDS LESS THAN 5 KT OFFSHORE GULF OF  
PAPAGAYO, AND SW TO W 10 TO 15 KT ELSEWHERE. SEAS 5 TO 7 FT IN S  
TO SW SWELL. PERIOD 14 SECONDS.  
 

 
 
PMZ115-130915-  
NORTH COSTA RICA TO WEST PANAMA TO 250 NM OFFSHORE-  
215 PM PDT FRI SEP 12 2025  
   
TONIGHT
 
SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT IN S TO SW  
SWELL. PERIOD 15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS  
THROUGH THE NIGHT.    
SAT
 
NEAR THE AZUERO PENINSULA, VARIABLE WINDS LESS THAN 5 KT,  
BECOMING W 10 KT IN THE AFTERNOON. ELSEWHERE, SW WINDS 10 TO  
15 KT. SEAS 5 TO 7 FT IN S TO SW SWELL. PERIOD 15 SECONDS.  
SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE DAY.    
SAT NIGHT
 
SW TO W WINDS 10 KT. SEAS 5 TO 7 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS  
THROUGH THE NIGHT.    
SUN
 
NEAR THE AZUERO PENINSULA, VARIABLE WINDS LESS THAN 5 KT,  
BECOMING SW TO W 10 KT IN THE AFTERNOON. ELSEWHERE, SW WINDS  
10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW SWELL. PERIOD 19 SECONDS.  
SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE DAY.    
SUN NIGHT
 
VARIABLE WINDS LESS THAN 5 KT NEAR THE AZUERO  
PENINSULA, AND SW TO W 10 KT ELSEWHERE. SEAS 6 TO 8 FT IN S TO  
SW SWELL. PERIOD 18 SECONDS.    
MON
 
SW TO W WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 16 SECONDS.    
MON NIGHT
 
W WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
TUE
 
SW TO W WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
TUE NIGHT
 
SW TO W WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO  
SW SWELL. PERIOD 15 SECONDS.    
WED
 
SW TO W WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS.    
WED NIGHT
 
SW TO W WINDS 15 TO 20 KT. SEAS 6 TO 9 FT IN S TO  
SW SWELL. PERIOD 14 SECONDS.  
 

 
 
PMZ117-130915-  
EAST PANAMA AND COLOMBIA INCLUDING THE GULF OF PANAMA-  
215 PM PDT FRI SEP 12 2025  
   
TONIGHT
 
SW WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
15 SECONDS. SCATTERED TSTMS THROUGH THE NIGHT.    
SAT
 
SW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN SW SWELL. PERIOD  
15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE  
DAY.    
SAT NIGHT
 
SW TO W WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN SW  
SWELL. PERIOD 15 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS  
THROUGH THE NIGHT.    
SUN
 
SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN SW SWELL. PERIOD  
19 SECONDS. SCATTERED SHOWERS AND ISOLATED TSTMS THROUGH THE  
DAY.    
SUN NIGHT
 
SW TO W WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN SW  
SWELL. PERIOD 18 SECONDS.    
MON
 
SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN SW SWELL. PERIOD  
17 SECONDS.    
MON NIGHT
 
W WINDS 10 KT. SEAS 6 TO 8 FT IN SW SWELL. PERIOD  
16 SECONDS.    
TUE
 
SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN SW SWELL. PERIOD  
15 SECONDS.    
TUE NIGHT
 
SW TO W WINDS 10 KT GULF OF PANAMA, AND SW 15 TO  
20 KT ELSEWHERE. SEAS 6 TO 8 FT IN SW SWELL. PERIOD 15 SECONDS.    
WED
 
SW WINDS 15 TO 20 KT. SEAS 6 TO 9 FT IN SW SWELL. PERIOD  
14 SECONDS.    
WED NIGHT
 
SW WINDS 15 TO 20 KT. SEAS 6 TO 9 FT IN SW SWELL.  
PERIOD 14 SECONDS.  
 

 
 
PMZ119-130915-  
ECUADOR INCLUDING THE GULF OF GUAYAQUIL TO 250 NM OFFSHORE-  
215 PM PDT FRI SEP 12 2025  
   
TONIGHT
 
S TO SW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN SW  
SWELL. PERIOD 15 SECONDS.    
SAT
 
GULF OF GUAYAQUIL, VARIABLE WINDS LESS THAN 5 KT,  
BECOMING W 10 TO 15 KT IN THE AFTERNOON. ELSEWHERE, S TO SW  
WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN SW SWELL. PERIOD  
14 SECONDS.    
SAT NIGHT
 
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN SW  
SWELL. PERIOD 19 SECONDS.    
SUN
 
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN SW SWELL.  
PERIOD 19 SECONDS.    
SUN NIGHT
 
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN SW  
SWELL. PERIOD 16 SECONDS.    
MON
 
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN SW SWELL.  
PERIOD 15 SECONDS.    
MON NIGHT
 
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN SW  
SWELL. PERIOD 15 SECONDS.    
TUE
 
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN SW SWELL.  
PERIOD 15 SECONDS.    
TUE NIGHT
 
S TO SW WINDS 15 TO 20 KT. SEAS 6 TO 8 FT IN S TO  
SW SWELL. PERIOD 14 SECONDS.    
WED
 
S TO SW WINDS 15 TO 20 KT. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS.    
WED NIGHT
 
S TO SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO  
SW SWELL. PERIOD 13 SECONDS.  
 

 
 
PMZ121-130915-  
ECUADOR BETWEEN 250 AND 500 NM OFFSHORE-  
215 PM PDT FRI SEP 12 2025  
   
TONIGHT
 
S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
SAT
 
S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO SW SWELL.  
PERIOD 18 SECONDS.    
SAT NIGHT
 
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 19 SECONDS.    
SUN
 
S WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN S TO SW SWELL.  
PERIOD 18 SECONDS.    
SUN NIGHT
 
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 16 SECONDS.    
MON
 
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
MON NIGHT
 
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 15 SECONDS.    
TUE
 
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 14 SECONDS.    
TUE NIGHT
 
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS.    
WED
 
S WINDS 15 TO 20 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 14 SECONDS.    
WED NIGHT
 
S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO SW  
SWELL. PERIOD 13 SECONDS.  
 

 
 
PMZ123-130915-  
OFFSHORE GALAPAGOS ISLANDS-  
215 PM PDT FRI SEP 12 2025  
   
TONIGHT
 
SE TO S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS.    
SAT
 
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 19 SECONDS.    
SAT NIGHT
 
S WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN S TO SW  
SWELL. PERIOD 19 SECONDS.    
SUN
 
SE TO S WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN S TO SW  
SWELL. PERIOD 18 SECONDS.    
SUN NIGHT
 
SE TO S WINDS 10 TO 15 KT. SEAS 6 TO 9 FT IN S TO  
SW SWELL. PERIOD 15 SECONDS.    
MON
 
SE TO S WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 15 SECONDS.    
MON NIGHT
 
S WINDS 10 KT. SEAS 6 TO 8 FT IN S TO SW SWELL.  
PERIOD 14 SECONDS.    
TUE
 
SE TO S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS.    
TUE NIGHT
 
S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS.    
WED
 
SE TO S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT IN S TO SW  
SWELL. PERIOD 14 SECONDS.    
WED NIGHT
 
S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. PERIOD  
14 SECONDS.  
 

 
 
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