Sunset on the detached island on snorkeling trip Phu Quoc
The weather-related information is definitely helpful for those looking for reliable information about Phu Quoc travel and especially particular regard for sea activities such as snorkeling, spearfishing, diving, sailing, kayaking in Phu Quoc.

In general, the weather in Phu Quoc Island, Vietnam is generally divided into two seasons: Sunny and Rainy, the Sunny season, also known as the dry season, starts from October and lasts until the end of April, the rainy season is also the beginning of summer, from May to October.

This article is shared very carefully and detailed based on OnBird Phu Quoc’s observations and research on weather changes (rainfall, sunshine) and sea water conditions (sea waves, temperature, current…) in Phu Quoc Island in each period of a year, especially useful for tourists who are interested in weather information to prepare for your trip and vacation in Phu Quoc Island.

Based on observations about Phu Quoc monthly weather developments to serve the construction of suitable sea experience activities in each phase as well as build our own weather forecast model, we divide Phu Quoc weather into 4 phases:



欢迎黄昏于荒岛- 富国岛旅行 - 富国岛出海 - May Rut Trong岛
Brilliant, romantic sunset in the dry season at Phu Quoc Island, Vietnam


Some weather characteristics of the dry season: In general, Phu Quoc dry season is divided into 3 phases.

In the early stages of the dry season (October) there may still be rains at night or in the early morning or during the day due to the influence of storms and tropical depressions. The majority of sunny days, Phu Quoc’s sea is affected by the northeast monsoon, so the east coast will have waves (from Thom beach – Bai Sao – Bai Kem, the south shore of Mui Ong Doi in Premier Village resort) The sun is hot, the sea water is cool. In the period of October – November, December – February, the water turns a bit cold. In the period of March – April, the sea water gradually warms up.


October – November: Season transition from rainy season into dry season

  • Rainfall: markedly reduced, sunshine begins to appear evenly, the sky is clear and cloudy, but there may still be heavy rain in early October or rain at night and early morning or due to the influence of tropical depression or storms form in the Vietnam East Sea.
  • Sea Waves: the water on the west coast becomes calm whereas the east coast start to have light waves, because it is still raining sometimes thereby on the next day after the rain the sea water can be cloudy.
  • Water temperature: Cool not too cold.


November – February: Dry season – Northeast monsoon starts to affect Phu Quoc:

  • Rainfall: The raining times are almost over, weather transitioning into the northeast monsoon, it is sunny in daytime but become cool at night as the Northeast monsoon bring cold air to the island.
  • Sea Waves: The water on the west coast becomes calm, the east coast become wavy, the water on the west coast becomes clearer.
  • Water temperature: Cool and a bit cold, especially December and February are the period of Christmas (Noel) and Lunar New Year of Vietnam


March – April: Season transition from dry season into rainy season:

From March to mid-April considered one of the most beautiful times of the year in Phu Quoc, there is almost no rain, the sea warms up, the sea often get calmer, the sunset is beautiful and glorious. By the end of April, the beginning of summer is also the beginning of the Phu Quoc rainy season, some heavy rains come, but the time and rainfall is not long and not large. This is the ideal period to participate in marine experiences including snorkeling & scuba diving to see Phu Quoc coral.



Phu Quoc’s rainy season is divided into 2 phases like other areas in Vietnam, but due to its particular location near the equator, the rainy season here is more pronounced than in other regions of Vietnam, but overall it is still divided into two phases. into two main periods: season transition and peak time with persistent rains.


May – the end of July: Season transition – early rainy season

This is also the summer in Vietnam and Phu Quoc, after small rains, scattered at the end of April and can last until early May, scattered and not ominous rains, called cloud rain, In the central area of Duong Dong and the North of the island, due to the mountainous terrain, water vapor accumulates, so it has more rains than in the southern part of the island. You can still enjoy glorious sunset in May.

  • Rainfall: unevenly distributed and scattered by area, heavy or small rain comes and passes suddenly and then the sun rises again. Overall not worrisome.
  • Phu Quoc sea water becomes warmer and cooler as it passes through July, the number of sunny days lasts until the end of June. It is an ideal period for experiences in the South of the island, at this time the West and North coasts of the island. (Rach Vem, Bai Sao Bien) becomes rough and turbid, so it is not ideal for fun.
Private speedboat tour in Phu Quoc Island, Vietnam
Sea water in June in Phu Quoc Island can be as clean as 4 – 9m


August – September: Peak time of the rainy season

Entering in August, the weather on Phu Quoc island start to change more clearly due to the influence of low pressure waves forming in the East Sea combined with southwesterly winds. The western sea was violently rough, and the strong southwesterly winds blew with greater intensity, shaking the trees on the island. Do not swim in the West Coast at this time because it is very dangerous.

Heavy and persistent rain occurs more densely in combination with strong winds, the central and northern areas of the island always have more rain than the south of the island, the rainfall is non-uniform, some times light, some times heavy, the sky is cloudy. The wind howls from time to time, at some times strong winds will result in a temporary shutdown of entertainment activities as Hon Thom Cable Car, which may stop accepting guests during times of strong wind to ensure safety. Even heavy rain combined with strong winds also halted operations at Phu Quoc airport to ensure safety.

However, in August, after tropical depression gone, Phu Quoc sea becomes calm and beautiful again with sunny weather, the clear sea gives a good underwater visibility, very suitable for diving & diving activities to see corals.

In August, September, there are also calm sea days, but the number of calm sea days will be less than those of rough sea days. For scuba diving and snorkeling experiences organized by OnBird, guests will be provided weather and water conditions forecast, hydrological conditions about 1 week before departure date with accuracy up to 90% – 95%. From there, guests plan to prepare for the journey in the most accurate and flexible way as well as experience the best Phu Quoc coral viewing possible.

Through August – September, the rains occur denser and longer, but after this period the rain will stop, Phu Quoc weather gradually change to welcome the dry season weather from October.

See more of our Guest Experience articles here.


The area consists of Phu Quoc, Ca Mau, and Kien Giang was once considered a Holy Land of 100 years without storms. Because of its special location in the South East Sea (Vietnam), the probability of storm occurrence is very low, most of which are caused by storms. tropical depressions or circulating storms that hit central and northern Vietnam after forming off the coast of the Philippines. According to records from historical documents, there have been no storms in the southernmost region of Vietnam in the past hundred years (Ca Mau, Kien Giang, Phu Quoc).

However, on the morning of November 1, 1997, a historical disaster occurred and remained in the memories of many people on Phu Quoc island in particular and Kien Giang and Ca Mau at that time. An area of ​​low pressure about 300 km southeast of the Spratlys and quickly strengthened into the fifth storm in the South China Sea in the same year, international name Linda. The historic storm moved quickly, on the morning of November 2, 1997, it reached a strength of 9-10 (winds of 105 km/h), 100 km east of Con Dao. On the night of November 2, the center of the storm entered Bac Lieu – Ca Mau, affecting most of the Southwest region and the entire Phu Quoc island. The powerful sweeping force when the storm sweeps in the low latitudes, right next to the coast where many people and fishermen live and fish near the shore. According to the report of damage caused by Typhoon Linda: nearly 3,000 people died (778 victims were found, more than 2123 victims were stuck at sea and could not find their bodies), more than 3000 fishing boats were sunk, 107,890 simple houses were destroyed, 120,000 hectares of aquaculture and 320,000 hectares of rice field were flooded, in Ca Mau (shield for Phu Quoc island) 128 people died, 1,164 people were missing and 600 people were injured.

In Phu Quoc, fishermen in An Thoi felt it more clearly, Many people have a subjective mentality that the storm would not roll through because they had never known what a storm is in their whole life before. Single houses with corrugated iron roofs were swept away in the night, the wind howled, boats were wrecked and drifted. Mr. Ho Phi Thuy, the founder of Ngoc Hien Pearl Farm, also nearly lost his life that day when he was floating on his boat off the An Thoi archipelago (his boat now is on display at Ngoc Hien Pearl Showroom). The storm hit Phu Quoc in the night, everything was too fast, the next day he woke up on his boat and he no longer believed that he was still alive, from then on he decided to quit his job at sea and move through pearl culture and made the brand name Pearl Ngoc Hien Phu Quoc as it is today.

Evidence shows that although it is an area that is almost not affected by storms, anything can happen, especially in the period of September-October-November when low lying areas in the East Sea form continuously, but in terms of Overview Phu Quoc island is still a land favored by mother nature, one of the most peaceful and peaceful seas in Vietnam.



Private speedboat tour in Phu Quoc Island, Vietnam
American guests enjoying sunset time in May 2022 in Phu Quoc Island, Vietnam on OnBird’s snorkeling trip

According to observations and weather data OnBird collected and evaluated: from October to April is the most ideal period to travel in Phu Quoc with all kinds of fun, not too worried about the weather outside. excluding the element of rough seas (for coral diving activities).

Early summer (April – end of July): the weather changes to the rainy season, but the rainfall is still small and the hours are short (rainy clouds) so it is not a concern, the number of bad weather days compared to good weather is about 2 -5%.

From August, especially September and may last until October due to the influence of some storms and low pressure in the East Sea, may cause Phu Quoc tourism to completely stop due to violent seas. and prolonged heavy rain, this period is especially limited to go to Phu Quoc. However, mixed with days of low pressure and storms, in general, the weather still has sunny days.

In case you have come to Phu Quoc and have a need to check the weather, especially the weather, the hydrological conditions of the sea water to plan a visit to the islands or participate in the experience of scuba diving and snorkeling. snorkeling) or scuba diving can contact OnBird 1 week in advance to receive accurate weather advice.



Here are some pictures taken by OnBird during the coral exploration experiences (scuba diving and snorkeling) in Phu Quoc during the early rainy season (May – July), thank to our own proactive weather and water conditions forecasting model and the understanding of hydrological conditions in Phu Quoc then we can organize snorkeling trips with appropriate timeframes and dates to give guest the best experiences.

Not like regular thinkings, the beginning of the rainy season (May to August) with warm water temperature and many sunny days with days of calm water too creates ideal conditions for exploring some of the coral reefs in the South Island of Phu Quoc. Some coral reefs are very beautiful but are almost only accessible during the rainy season (summer) while the dry season is almost inaccessible due to adverse hydrological conditions: big waves and strong currents.

The coral reefs that are beautiful and suitable for safe scuba diving in the early and peak stages of the rainy season in Phu Quoc that OnBird tracked and observed include:

  • Northeast Coral Reef: coral city (early rainy season diving spot) with about 18 different species
  • Coral Mountain: Phu Quoc’s largest Cactus coral reef
  • Shallow reef: Table coral kingdom, where there are the largest table coral colonies in Phu Quoc
  • Coral Steep: small coral field


So what are the ideal periods for snorkeling & scuba diving to discover Phu Quoc coral?

The dry season and the beggining of summer time (May – July) are still the most ideal time to explore the coral reefs of Phu Quoc with a lot of sunny days. The beautiful coral reef for diving & snorkeling in this period are:

  • Half-moon Reef
  • Coral Mountain
  • Coral Steep
  • U-Turn
  • North-east Coral Reef


See more details about scuba diving and snorkeling experiences with OnBird here.