Phu Quoc by month: dry season, rain, and the sea on the west and east coasts
Phu Quoc is dry November to March and rainy May to September. The west-coast sea is calm November to March, with waves up to 1.5–2 m in summer. Weather by month, storms and ferries.
Short answer: Phu Quoc is dry from November to March and rainy from May to September, with April and October as transition months. Long-term averages for the Phu Quoc weather station show from 4 rainy days in February to 24 in August. Days are warm all year, around 30–32 °C. The sea on the west coast (Bai Truong, Long Beach) is calm from November to March, while from June to September it can have waves of 1.5–2 m.
When is the dry season and when is the rainy season on Phu Quoc?
The dry season on Phu Quoc runs November to March and the rainy season May to September, writes vietnamtourism.com (updated 11 Oct 2026). Vietnam Airlines gives November–April as dry and May–October as rainy, so treat April and October as transition months. The Phu Quoc station averages (QCVN 02:2022/BXD) show it: in January and February it rains 4–5 days a month, in April about 12, and from May to October 19 to 24 days. Rain is usually short but heavy, mostly in the evening. This is a guide, not a forecast for your dates.
What is the weather on Phu Quoc month by month?
| Month | Day / night | Rainy days | What to expect |
|---|---|---|---|
| January | 30,6 / 23,0 °C | 4,6 | dry; calm sea on the west coast |
| February | 31,1 / 23,7 °C | 3,7 | dry; calm sea on the west coast |
| March | 32,1 / 24,9 °C | 6,6 | dry; slightly more rain |
| April | 32,5 / 25,6 °C | 11,7 | transition month: rain picks up, wind uneven |
| May | 31,6 / 25,8 °C | 19,0 | rainy, south-west monsoon; water can be murky |
| June | 30,4 / 25,6 °C | 21,0 | rainy; waves of 1.5–2 m on the west coast |
| July | 29,8 / 25,2 °C | 22,5 | rainy; skip Sao Beach |
| August | 29,6 / 25,2 °C | 23,6 | rainy; skip Sao Beach |
| September | 29,5 / 25,0 °C | 22,8 | heaviest rain and wind of the year |
| October | 30,2 / 24,5 °C | 21,5 | transition month: uneven wind, still a lot of rain |
| November | 30,7 / 24,4 °C | 13,8 | rain easing; start of the dry and high season |
| December | 30,3 / 23,4 °C | 6,2 | dry; many tourists |
"Day" is the average daily maximum, "night" the average nightly minimum. The hottest month is April (about 32.5 °C by day); the coolest nights are in January and December (about 23 °C). Sea temperature: about 27 °C in December–January, about 28 °C near An Thoi from December to April, and April has the warmest water of the year (vietnamtourism.com).
How does the south-west monsoon affect the sea from May to September?
From May to September the south-west wind blows straight onto Phu Quoc's west coast, and from June to August it blows steadily at 15–25 knots (vietnamtourism.com). At Bai Truong (Long Beach) waves of 1.5–2 m are common from June to September, the water is murky and jellyfish appear. Khem Beach, as Vietnam Airlines describes it, is sheltered by mountains and fit for swimming even in the rainy season, although the water can be murky in rainy months. On Sao Beach, vietnamtourism.com advises staying away in July and August because of the south-west wind. Bai Thom in the north-east is calmer then, but has little infrastructure.
What is the sea like in the dry season, November to March?
From November to March the north-east monsoon blows off the land, so the west coast is sheltered from the wind. Bai Truong is calm in these months, and Ong Lang beach north of Duong Dong is good for swimming from December to March (vietnamtourism.com). The east coast, by the same source, is rougher in these months, but Sao Beach is named as a good time to visit from November to April. What else to see on the island is in the attractions section.
Is it safe to swim on Phu Quoc?
Swim where the water is calm and there are signs, and stay out if a red flag is up or the waves look much bigger than usual. We found no data on rip currents or drownings on Phu Quoc in verified sources, so there are no figures. From June to September Bai Truong has waves up to 1.5–2 m (vietnamtourism.com): children and weak swimmers are better off in a sheltered bay such as Khem Beach. Ask your hotel which beach is calmer today.
Do storms happen and are ferries cancelled?
Yes: in rough seas the high-speed boats and ferries from the mainland do not run. On 13 July 2024 all passenger services between Phu Quoc and the ports of Ha Tien and Rach Gia were stopped because of bad weather, and resumption depended on the weather (VOH). On 27 September 2022 boats to Phu Quoc were stopped because of Storm No. 4 (SGGP). vietnamtourism.com calls September the worst month of the year for wind and rain. If you travel from May to October, keep a spare day and check transfers; tickets can be refunded or moved through the agent.
When is Phu Quoc busiest?
Most tourists come from November to January: vietnamtourism.com calls November the start of the high season and December and January busy with expensive hotels. Tet adds more crowds; its date changes every year (in 2026 it was 17 February), so check the calendar for your year. We found no verified figures on visitor numbers or Russian tourists, so we give none. Book accommodation and trips ahead for holidays: tours and travel agencies, diving.
What does "Kien Giang is now An Giang" and "special zone" mean?
Since 1 July 2025 Kien Giang no longer exists as a separate province: it was merged with An Giang into An Giang province (National Assembly Resolution 202/2025/QH15, Article 1). Phu Quoc became a special zone (đặc khu) within An Giang — so writes SGGP, citing Resolution 1654/NQ-UBTVQH15 of 16 June 2025. Maps and older articles still say "Phu Quoc city" and "Kien Giang" — it is the same island.
FAQ
When should I go to Phu Quoc to avoid rain? November to March. At the Phu Quoc station January–February have 4–5 rainy days a month, with 30–31 °C by day.
Which beach is calmer in summer? From June to September Bai Truong has waves up to 1.5–2 m. Khem Beach, per Vietnam Airlines, is sheltered by mountains and fit for swimming even in the rainy season; Bai Thom in the north-east is calmer too.
Can I go to Sao Beach in July? vietnamtourism.com advises against Sao Beach in July and August because of the south-west wind, and names November–April as the time for this beach.
What is the sea temperature on Phu Quoc? About 27 °C in December–January, about 28 °C near An Thoi from December to April; April has the warmest water.
Are ferries and boats to Phu Quoc cancelled? Yes, in rough seas: on 13 July 2024 all services between Phu Quoc and Ha Tien and Rach Gia stopped. Tickets can be refunded or moved through the agent.
What is the weather on Phu Quoc in September? The rainiest and windiest month: about 23 rainy days, around 29.5 °C by day. Keep a spare day.
What is the weather on Phu Quoc in January? Dry: about 5 rainy days, around 30.6 °C by day, about 23 °C at night. The sea on the west is calm.
Sources and verification
Temperature and rainy days are long-term averages for the Phu Quoc station (no. 150) from Vietnam's national standard QCVN 02:2022/BXD, tables A.3, A.4 and A.28; checked 23 Oct 2026 (annual values match the monthly averages). Seasons, winds, waves by beach, sea temperature, high season and Tet — vietnamtourism.com on when to visit Phu Quoc (updated 11 Oct 2026). Khem Beach and the rainy season — Vietnam Airlines on Khem Beach (no date on the page). Services stopped on 13 Jul 2024 — VOH. Boats stopped on 27 Sep 2022 — SGGP. Special zone — SGGP (1 Jul 2025, citing Resolution 1654/NQ-UBTVQH15). Provincial merger — text of Resolution 202/2025/QH15 on hoatieu.vn. We found no verified data on rip currents, drownings, visitor numbers or Russian tourists, so the text has none. Text updated 23 October 2026.