17Β° to 22Β°
Cool & Cloudy
Part of the dry season, but with less sun than the months that follow and occasionally chilly.
π§₯ Light layersβοΈ Cloudy skies
18Β° to 23Β°
Dry Season Holds
Dry and mild, though still one of the cloudier months of the year.
π§₯ Light jacketβ Light rain jacket
21Β° to 25Β°
Warming Up
Dry and increasingly sunny, warming steadily toward the hotter months ahead.
βοΈ Sunscreenβ¨ Best cave-touring weather
23Β° to 29Β°
Best of the Dry Season
The mildest, least rainy month of the dry season, ideal for exploring the caves before the heat builds.
βοΈ Sunscreenβ¨ Best cave-touring weather
26Β° to 33Β°
Heat Builds
Rain stays light, but the heat climbs fast as the beach-holiday months begin.
π₯΅ Heat protectionποΈ Beach days
28Β° to 34Β°
Peak Heat
The hottest month of the year, with highs that can push past 38Β°C.
π₯΅ Heat protectionποΈ Beach days
27Β° to 34Β°
Scorching
Nearly as hot as June, still fairly dry, with the beach the best escape from the heat.
π₯΅ Heat protectionποΈ Beach days
27Β° to 33Β°
Rains Return
Heat remains intense, but rain starts picking up as the wet season approaches.
π₯΅ Heat protectionβ Light rain jacket
25Β° to 31Β°
Monsoon Arrives
The rainy season sets in hard, with much heavier, more frequent rain than the months before it.
β Heavy rain gearβ οΈ Flash-flood aware
23Β° to 28Β°
Wettest Month
The rainiest month of the year by a wide margin, with a real risk of flooding around Phong Nha.
β Heavy rain gearβ οΈ Flash-flood aware
21Β° to 26Β°
Deep Monsoon
Still very wet, with sustained rain and the northeast monsoon in full force.
β Heavy rain gearβ οΈ Flash-flood aware
18Β° to 23Β°
Rains Ease
The last monsoon rains linger but are usually light, easing toward the dry season ahead.
β Light rain jacketπ§₯ Light layers
β
β
β
peak season, β
β
β decent shoulder months, β
ββ true off-peak, based on rain frequency, heat, and haze.
Frequently asked questions
When is monsoon season in Dong Hoi?›
Dong Hoi's monsoon season runs roughly from September through November, with October historically the wettest, averaging around 650mm of rain across 19 days.
What is the best time of year to visit Dong Hoi?›
January through April make up Dong Hoi's dry season, with April historically the mildest and least rainy, the easiest window for exploring Phong Nha's caves without rain complicating boat access.
What is the least favorable time to visit Dong Hoi?›
September through November bring the bulk of the year's rain, with October the wettest month by a wide margin and a real risk of flooding around Phong Nha.
Which month has the most rain in Dong Hoi?›
October is historically the wettest month, averaging around 650mm of rain across 19 days.
Which month is the driest in Dong Hoi?›
February is historically the driest month, averaging around 41mm of rain.
How hot does Dong Hoi get?›
June is historically the hottest month, with highs that can push past 38Β°C.
What should I pack for Dong Hoi during the rainy season?›
Rain gear is worth having from around September through November, when the northeast monsoon brings the bulk of the year's rain.
Is Son Doong Cave difficult to visit?›
Yes. Visiting Son Doong, the world's largest cave, requires a multi-day expedition booked through a single licensed operator, costs around $3,000, and is capped at roughly 1,000 permits a year, often selling out 6 to 12 months ahead. Tours only run in the dry season, January through August.
How many hours of sunshine does Dong Hoi get per day on average?›
It ranges from around 2.5 hours a day in December up to about 7.5 hours a day in May.
Does flooding affect the Phong Nha caves?›
September through November brings the bulk of the year's rain, and flooding around the Phong Nha caves and rivers is a real possibility during this window.