Fiji Heavy Rain Alert as Trough Approaches: Flash Flood Risk and Thunderstorms Across the Islands

Weather Bulletin
Issued from the National Weather Forecasting Centre Nadi
5:30am Tuesday, 26 August 2025

A heavy rain alert remains in force for the whole Fiji group. For more information, refer to the Special Weather Bulletin issued by the National Weather Forecasting Center at https://www.met.gov.fj/alerts/

Situation: A moist easterly to northeasterly wind flow prevails over the Fiji group. A trough of low pressure is expected to approach from the west, bringing cloud, rain and showers from later today through Wednesday.

Forecast to midnight tonight for the Fiji group:
– Cloudy periods with showers over Eastern Macuata and Cakaudrove, Serua-Namosi, Navua-Suva-Nausori, Tailevu-Naitasiri-Ra-Rakiraki, Kadavu and nearby smaller islands, Lau and Lomaiviti groups. Isolated heavy falls possible. Localised heavy falls may lead to flash-flooding of low-lying areas.
– Elsewhere, fine apart from possible isolated afternoon or evening showers.
– Rain and thunderstorms developing from the west from later today and gradually spreading to the rest of the group.
– Moderate to fresh east to northeast winds.
– Moderate to rough seas.

Outlook for Wednesday: Occasional rain, heavy at times and a few thunderstorms over most places. Localised heavy falls may lead to flash-flooding of low-lying areas. Moderate to fresh north to northwest winds, gusty at times. Moderate to rough seas.

For Navua / Suva / Nausori:
– Cloudy periods with some showers. Rain and thunderstorms developing from later today.
– Min: 23, Max: 29.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 24, Max: 27.

For Nadi / Lautoka / Ba:
– Fine apart from possible isolated afternoon or evening showers. Rain and thunderstorms developing from later today.
– Min: 21, Max: 31.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 23, Max: 27.

For Sigatoka / Coral Coast:
– Fine apart from possible isolated afternoon or evening showers. Rain and thunderstorms developing from later today.
– Min: 22, Max: 31.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 23, Max: 27.

For Tavua / Rakiraki:
– Cloudy periods with some showers over Rakiraki. Fine apart from possible isolated afternoon or evening showers elsewhere. Rain and thunderstorms developing from later today.
– Min: 22, Max: 31.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 23, Max: 27.

For Natadradave / Korovou:
– Cloudy periods with some showers. Rain and thunderstorms developing from later today.
– Min: 24, Max: 29.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 24, Max: 27.

For Yasawa / Mamanuca group:
– Fine apart from possible isolated afternoon or evening showers. Rain and thunderstorms developing from later today.
– Min: 22, Max: 31.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 23, Max: 27.

For Labasa:
– Cloudy periods with some showers. Rain and thunderstorms developing from later today.
– Min: 22, Max: 31.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 23, Max: 27.

For Savusavu:
– Cloudy periods with some showers. Rain and thunderstorms developing from later today.
– Min: 22, Max: 30.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 23, Max: 27.

For Nabouwalu:
– Fine apart from possible isolated afternoon or evening showers. Rain and thunderstorms developing from later today.
– Min: 22, Max: 31.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 23, Max: 27.

For Taveuni:
– Cloudy periods with some showers. Rain and thunderstorms developing from later today.
– Min: 22, Max: 31.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 23, Max: 27.

For Lau and Lomaiviti Group:
– Cloudy periods with some showers. Rain and thunderstorms developing from later today.
– Min: 22, Max: 30.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 23, Max: 27.

For Kadavu:
– Cloudy periods with some showers. Rain and thunderstorms developing from later today.
– Min: 22, Max: 30.
– Outlook for Wednesday: Occasional rain, heavy at times and few thunderstorms. Min: 23, Max: 27.

For Rotuma:
A strong wind warning remains in force for Rotuma waters and is now cancelled for the land areas.
Situation: A moist easterly wind flow prevails. A weak trough of low pressure is expected to affect the island from later today.
Over waters: Easterly winds 20 to 25 knots, turning to northeasterly and easing to 15 to 20 knots from tomorrow.
Over land: Moderate to fresh easterly winds.
Rough seas. Seas becoming moderate to rough from tomorrow.
Cloudy periods with some showers.
Min: 25, Max: 30.
Outlook for Wednesday: Occasional showers, heavy at times and a few thunderstorms. Min: 25, Max: 30.

Note: A heavy rain alert remains in force for the Fiji group. If you’re in low-lying areas, keep an eye on surfaces that can flood and be ready to shelter if needed.