FPTO40 NFTF 191700



FUA'AMOTU WEATHER FORECASTING CENTRE


WEATHER BULLETIN ISSUED AT 06:00AM WEDNESDAY 20 MAY 2026


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WARNING FOR LAND AREAS


THE STRONG WIND WARNING THAT HAS BEEN IN FORCE FOR VAVA'U AND THE NIU
AS LAND
AREAS HAS BEEN CANCELLED.



SITUATION


An elongated trough lies over the over the Niuas and across the easte
rn
vicinity of Tonga and it is expected to move away by later today. Mea
nwhile,
cool southerly wind flow prevails over most parts of the Group.



FORECAST TO MIDNIGHT TONIGHT FOR TONGA


FOR THE NIUA:
Light to moderate southerly over Niuafo'ou, while west to northwest o
ver
Niuatoputapu and then becoming southerly later today. Cloudy with occ
asional
showers and a potential of thunderstorms. Becoming fine later this mo
rning

FOR VAVA'U, HA'APAI, TONGATAPU AND 'EUA:
Light to moderate south to southwester winds.
Mainly fine apart from cloudy periods with showers. Existing patches 
of fog
this morning. Cooler air temperature at night times.



OUTLOOK FOR THURSDAY


FOR ALL OF TONGA:
Light to moderate south to southwesterly winds, fresh at times.
Mainly fine apart from cloudy periods with possible few showers. Cool
er air
temperature at night times.



TEMPERATURE FORECAST FOR NUKU'ALOFA


MAXIMUM FOR TODAY: 26C
MINIMUM FOR TONIGHT: 17C




MARINE WEATHER BULLETIN



WARNINGS FOR COASTAL WATERS


THE STRONG WIND WARNING AND SMALL CRAFT ADVISORY THAT WERE IN FORCE F
OR THE
NIUAS AND VAVA'U COASTAL WATERS IS NOW CANCELLED BUT REMAIN IN FORCE 
FOR
TELE-KI-TONGA AND TELE-KI-TOKELAU COASTAL WATERS.

AN EXTREME HIGH TIDE WARNING REMAINS IN FORCE FOR ALL OF TONGA COASTA
L WATERS.

A SMALL CRAFT ADVISORY REMAINS IN FORCE FOR TONGATAPU, 'EUA, TELE-KI-
TONGA AND
TELE-KI-TOKELAU COASTAL WATERS.



FORECAST TO MIDNIGHT TONIGHT FOR TONGA COASTAL WATERS


FOR NIUATOPUTAPU COASTAL WATERS
West to northwest winds 10-15 knots and then becoming southerly later
 today.
Slight to moderate seas (up to 2metres). Possible flooding in low lyi
ng coastal
areas due to extreme high tide.

FOR NIUAFO'OU, VAVA'U HA'APAI, TONGATAPU AND 'EUA COASTAL WATERS:
South to southwesterly winds 10-15 knots. Slight to moderate seas (up
 to 2
metres). A moderate southeasterly swell (up to 3 metres) especially o
ver
Tongatapu and 'Eua. Possible flooding in low lying coastal areas due 
to extreme
high tide.

FOR TELE-KI-TONGA AND TELE-KI-TOKELAU COASTAL WATERS:
East to southeast winds 10-15 knots, rising up to 25 knots at times l
ater this
evening. Moderate seas (up to 2.5 metres). A moderate southeasterly s
well (up
to 3 metres).





OUTLOOK FOR THURSDAY


FOR TELE-KI-TONGA AND TELE-KI-TOKELAU COASTAL WATERS:
South to southeast winds 15-20 knots, rising up to 25-30 knots at tim
es to the
southern waters. Moderate to rough seas (up to 2-3 metres). A moderat
e
southeasterly swell (up to 3.5 metres).

FOR THE REST OF COASTAL WATERS:
South to southwest winds 10-15 knots, rising up to 20 knots at times.
 Moderate
seas (up to 2.5 metres). A moderate southeasterly swell especially To
ngatapu
and 'Eua coastal waters (up to 2.5 metres).





TIDE PREDICTION IN NUKU'ALOFA TODAY


HIGH TIDE: 10:00AM
LOW TIDE: 4:30PM



SUN AND MOON IN NUKU'ALOFA TODAY


SUNRISE: 7:05AM...............SUNSET: 6:08PM
MOONRISE: 10:31AM.................MOONSET: 9:29PM



THE MEAN SEA LEVEL PRESSURE RECORDED AT FUA'AMOTU AIRPORT AT 06:00AM 
WAS 1011.1
MILLIBARS AND THE RELATIVE HUMIDITY WAS 91%


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FCD: SMV/PT/= CRS: UV/=