FUA'AMOTU WEATHER FORECASTING CENTRE
WEATHER BULLETIN ISSUED AT 06:00AM WEDNESDAY 16 SEPTEMBER 2026
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WARNING FOR LAND AREAS
A STRONG WIND WARNING REMAINS IN FORCE FOR THE NIUAS AND VAVA'U LAND AREAS.
SITUATION
A trough lies over the Niuas and Vava'u with associated cloudy and occasional rain expected to affect these areas especially the Niuas until tomorrow. Meanwhile, southeasterly winds prevails across Tonga.
FORECAST TO MIDNIGHT TONIGHT FOR TONGA
FOR THE NIUAS AND VAVA'U:
Moderate to fresh southeasterly winds and strong at times over the Niuas and Vava'u.
Cloudy with scattered showers, becoming overcast by later this afternoon with occasional rain and heavy at times with chances of thunderstorm especially over the Niuas

FOR HA'APAI, TONGATAPU AND 'EUA:
Moderate to fresh southeasterly winds.
Mainly fine apart from cloudy periods with showers.
OUTLOOK FOR THURSDAY
FOR THE NIUAS:
Moderate to fresh southeasterly winds
Cloudy and overcast with occasional rain and heavy at times with thunderstorms and becoming fine later in the afternoon.

FOR VAVA'U, HA'APAI, TONGATAPU AND 'EUA:
Light to moderate east to southeasterly winds.
Mainly fine apart from cloudy periods with showers.
TEMPERATURE FORECAST FOR NUKU'ALOFA
MAXIMUM FOR TODAY: 24C
MINIMUM FOR TONIGHT: 18C
MARINE WEATHER BULLETIN
WARNINGS FOR COASTAL WATERS
A STRONG WIND, HIGH SURF WARNING AND SMALL CRAFT ADVISORY REMAIN IN FORCE FOR ALL COASTAL WATERS OF TONGA. 
FORECAST TO MIDNIGHT TONIGHT FOR TONGA COASTAL WATERS
FOR ALL COASTAL WATERS OF TONGA:
Southeasterly winds 10-20 knots, rising up to 25-30 knots at times.
Moderate to rough seas (up to 2-3 metres). A moderate southwesterly swell (up to 2-3 metres).
 
OUTLOOK FOR THURSDAY
FOR THE NIUAS, VAVA'U AND HA'APAI COASTAL WATERS:
Southeasterly winds 10-15 and rising up to 20-25 knots at times. Moderate to rough seas (up to 2-3 metres).

FOR TONGATAPU, 'EUA COASTAL WATERS:
Southeasterly winds 10-15 knots, rising up to 20 knots at times. Slight to moderate seas (up to 2 metres).

FOR TELE-KI-TONGA AND TELE-KI-TOKELAU COASTAL WATERS:
East to northeast winds 10-15 knots, rising up to 20 knots at times. Slight to moderate seas (up to 2 metres).
TIDE PREDICTION IN NUKU'ALOFA
HIGH TIDE: 11:15AM
LOW TIDE: 5:15PM
SUN AND MOON IN NUKU'ALOFA
SUNRISE: 6:36AM.............SUNSET: 6:35PM
MOONRISE: 9:27AM.........MOONSET: 11:11PM
THE MEAN SEA LEVEL PRESSURE RECORDED AT FUA'AMOTU AIRPORT AT 6:00AM WAS 1016.2 MILLIBARS AND THE RELATIVE HUMIDITY WAS 73%
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FCD: AA/PT/= CRS: FL/=