FUA'AMOTU WEATHER FORECASTING CENTRE
WEATHER BULLETIN ISSUED AT 07:00PM WEDNESDAY 16 SEPTEMBER 2026
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WARNING FOR LAND AREAS
	A HEAVY RAIN WARNING AND FLASH FLOOD ADVISORY IS NOW IN FORCE FOR THE NIUAS 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 condition with occasional rain. Meanwhile, southeasterly winds prevails across Tonga.
FORECAST TO MIDNIGHT TOMORROW FOR TONGA
	FOR THE NIUAS: Moderate to fresh southeasterly winds, strong at times. Cloudy and overcast with occasional rain, possibly heavy at times with isolated thunderstorm. Possible flooding in low lying areas due to heavy rain. FOR VAVA'U: Moderate to fresh southeasterly winds, strong at times. Cloudy with occasional rain, possibly heavy at times with isolated thunderstorm. FOR HA'APAI, TONGATAPU AND 'EUA: Moderate to fresh southeasterly winds. Mainly fine apart from cloudy periods with possible isolated showers.
OUTLOOK FOR FRIDAY
	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 TOMORROW: 25C MINIMUM FOR TONIGHT: 18C
MARINE WEATHER BULLETIN
WARNINGS FOR COASTAL WATERS
	THE STRONG WIND WARNING AND SMALL CRAFT ADVISORY THAT WAS IN FORCE FOR THE NIUAS COASTAL WATERS IS NOW UPGRADED TO GALE WARNING BUT REMAIN IN FORCE FOR THE REST OF TONGA COASTAL WATERS. A HIGH SURF WARNING REMAIN IN FORCE FOR ALL OF TONGA COASTAL WATERS.
FORECAST TO MIDNIGHT TOMORROW FOR TONGA COASTAL WATERS
	FOR THE NIUAS COASTAL WATERS: Southeasterly winds 20-25 knots, rising up to 30-40 knots at times. Rough seas (up to 3.5-4 metres). A moderate southwesterly swell (up to 2-3 metres). FOR THE REST OF TONGA COASTAL WATERS: 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 FRIDAY
	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: 11:25PM LOW TIDE: 5:50AM early tomorrow
SUN AND MOON IN NUKU'ALOFA
	MOONSET: 11:11PM SUNRISE: 6:35AM tomorrow
	THE MEAN SEA LEVEL PRESSURE RECORDED AT FUA'AMOTU AIRPORT AT 07:00PM WAS 1014.8 MILLIBARS AND THE RELATIVE HUMIDITY WAS 79%
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FCD: SV/IL= CRS: HT/