WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE
25TH OF JUNE 2026 AT 16:10 UTC.
FOR SOUTH-EAST SECTOR OF METAREA. VII, PREPARED BY REUNION, SEE AREA 2
BELOW.
NOTE: WX OBSERVATIONS.
======================
COULD ALL VESSELS EXPERIENCING UNEXPECTED, SEVERE WX/SEA STATE PLEASE
MAKE EVERY EFFORT TO REPORT THIS TO SAWS VIA CAPE TOWN RADIO.
AREA 1:
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FORECAST VALID FROM 252200 TO 262200 UTC:
WIND IN KNOTS, WAVE HEIGHTS IN METERS. NO SEA STATE GIVEN IF WAVES LESS THAN 3M.
NOTE THE WIND SPEEDS QUOTED HERE ARE THE EXPECTED AVERAGE SPEEDS.
INDIVIDUAL GUSTS MAY EXCEED THESE VALUES BY A FACTOR OF UP TO 1.5.
WAVE HEIGHTS ARE SIGNIFICANT WAVE HEIGHTS, WHICH MAY BE ACCOMPANIED BY INDIVIDUAL WAVES 1.5 TO 2.0 TIMES HIGHER.
GALE FORCE WARNINGS:
====================
NIL.
SYNOPTIC CHART 12:00Z
=====================
High 1032 hPa 32s03w, High 41s29e
Low 1019 hPa 31s17e
1. Cold Front: 31s38w 41s16w 46s04e 57s00e into 56s14w
2. Cold Front: 35s43e 43s57e 50s71e into 56s78e
AREA FORECAST:
==============
ASCENSION (06S/15S, 00E/20W):
WIND : SE 15 to 25.
VIS : Good.
SEA STATE: 3.0 to 3.5m, with S to SE swell.
ANGOLA (06S/15S, 00E/00N):
WIND : S to SE 15 to 20, but S to SW 05 to 15 in the east.
VIS : Good.
SEA STATE: 3.0m, with S swell.
ST HELENA (15S/30S, 00E/20W):
WIND : SE to S 15 to 25, but anticyclonic 05 to 15 over the southern
parts.
VIS : Good.
SEA STATE: 3.0 to 3.5m, except in the south, with S to SE swell.
TRADES (15S/30S, 00E/WEST COAST):
WIND : S to SE 05 to 15, reaching 20 in some places.
VIS : Good.
SEA STATE: 3.0m with S swell.
TRISTAN (30S/40S, 00E/20W):
WIND : Anticyclonic 05 to 15 in the north-east, otherwise NW to W 10 to
20 reaching 25 to 30 in the south-east at first.
VIS : Good, but moderate to poor in showers and rain over the southern
half and in the north-west.
SEA STATE: 3.0 to 4.0m (except in the north-east), reaching 4.5 to 5.0m in
the south-west, with W swell.
CAPE WEST (30S/40S, 00E/20E):
WIND : NW 15 to 25 in the south-west reaching 30 at times, otherwise SE
05 to 15.
VIS : Good, but moderate in showers and rain in the south-west from mid-
period.
SEA STATE: 3.0 to 4.0m (except in the extreme north-west), with S to SW swell
but NW in the south-west.
CAPE EAST (32.5S/40S, 20E/50E):
WIND : S to SE 05 to 15 in the east reaching 20 at times, otherwise E to
NE 15 to 25, reaching 30 to 35 in places over the central parts.
VIS : Good, but moderate to poor in showers and thundershowers over the
central parts reaching very poor in some areas.
SEA STATE: 3.0 to 4.0m, with SW swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : NE 10 to 20 in the south-west, otherwise E to SE 05 to 15,
reaching 20 in the north at times.
VIS : Good.
MOZAMBIQUE CHANNEL:
WIND : S to SE 10 to 20, reaching 25 in the extreme south-east while
variable 05 to 10 in the north-east.
VIS : Good, but moderate in showers and rain in places over the western
half.
MADAGASCAR EAST (10S/25S, EAST COAST/55E):
WIND : E to SE 15 to 25.
VIS : Moderate in showers and rain in places.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : Anticyclonic 05 to 15 in the north-west, spreading to the north-
east by mid-period, otherwise W to SW 15 to 25, becoming N to NW
15 to 25 in the south-west towards mid-period reaching 30 at times
and spreading to the south-east by the end of the period.
VIS : Good.
SEA STATE: 3.0 to 4.0m, reaching 5.0 to 7.0m in places over the southern
half, with SW swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK (AMSTERDAM-CROZET-KERGUELEN)
26/06/25 AT 1600UTC
AVERAGED WIND SPEED ON BEAUFORT SCALE. (WIND GUSTS MAY BE ABOUT 40%
STRONGER THAN THE AVERAGES GIVEN HERE).
PART 1: WARNING
NIL.
PART 2: GENERAL SYNOPSIS, 26/06/25 AT 1200UTC
- HIGH 1040 HPA NEAR 40S/78E, MOVING SLOWLY EASTWARD.
- COLD FRONT AXIS 40S/50E, 42S/55E, 46S/63E, MOVING
EAST-NORTHEASTWARD 20KT.
PART 3: FORECAST FOR 24 HOURS FROM 26/06/25 AT 1800UTC TO 26/06/26
AT 1800UTC
WAM (30S/40S, 50E/65E)
FRONTAL SHOWERS OVER SOUTHERN.
WIND:VARIABLE 3 OVER NORTHERN. NORTH-WEST 4 TO 6 OVER SOUTHERN
AHEAD THE FRONT, BACKING SOUTH-WESTERLY 4 TO 5 BEHIND. ANTICLOCKWISE
3 TO 5 BY WESTERN AT END.
SEA: MODERATE, ROUGH OVER SOUTHERN BY SOUTH-WEST SWELL 2 TO 3 M.
VISI: POOR UNDER PRECIPITATION.
AMS (30S/40S, 65E/80E)
FRONTAL SHOWERS.
WIND: ANTICLOCKWISE 3 TO 4 SETTING-UP NORTH-WEST 6 TO 7 BY
SOUTH-WESTERN SOON, AND BACKING SOUTH-WEST 6 TO 7 BEHIND AT END.
SEA: MODERATE TO ROUGH.
VISI : POOR UNDER PRECIPITATION.
CRO (40S/50S, 50E/65E)
FRONTAL SHOWERS.
WIND: NORTH-WEST 6 TO 7 OVER NORTH-EASTERN AHEAD THE FRONT, BACKING
WESTERLY 5 TO 7 BEHIND, THEN SOUTH-WEST 6 TO 7 BY WESTERN SOON.
ANTICLOCKWISE 3 TO 4 BY NORTH-WESTERN AT END.
SEA : ROUGH TO VERY ROUGH. SOUTHWEST SWELL INCREASING 3 TO 5 M FROM
NORTH TO SOUTH AT END.
VISI: POOR IN PRECIPITATION.
KER (40S/50S, 65E/80E)
FRONTAL SHOWERS.
WIND: NORTH-WEST 5 TO 7 AHEAD THE FRONT, BACKING SOUTH-WEST 5 TO 6 BY
WESTERN SOON, INCREASING LOCALLY 7.
SEA: ROUGH TO VERY ROUGH. WESTERLY SWELL 3 TO 4 M.
VISI: POOR IN PRECIPITATION.=