Dong Hoi weather by month & the best time to visit
Vietnam · beach resort · tropical monsoon climate
The best time to visit Dong Hoi is February — its sunniest month (Sunshine Score 82/100), with March and January close behind. Dong Hoi averages about 1,435 hours of sunshine a year. Daytime highs around 23°C / 73°F and roughly 24 mm of rain in February.
When is the best time to visit Dong Hoi?
For sunshine, the best time to visit Dong Hoi is February, then March and January. The dullest month is July (59/100, 156 mm of rain). The full month-by-month picture is in the table below.
How sunny is Dong Hoi?
Dong Hoi isn't a sunny place by world standards: about 1,435 hours of sunshine a year. February (82/100) is noticeably better than July (59). It ranks #18 of 22 destinations in Vietnam for annual sunshine, below the national median of 2,124 hours. Rain has a clear season: the wettest stretch, around September, carries about 57% of the annual 1,930 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 78 | 22° / 72°F | 20° / 68°F | 46 mm | 5 | 21° / 70°F |
| February | 82 | 23° / 73°F | 20° / 68°F | 24 mm | 6 | 22° / 72°F |
| March | 79 | 25° / 77°F | 22° / 72°F | 41 mm | 6 | 23° / 73°F |
| April | 76 | 27° / 81°F | 24° / 75°F | 57 mm | 8 | 27° / 81°F |
| May | 66 | 30° / 86°F | 26° / 79°F | 114 mm | 9 | 29° / 84°F |
| June | 69 | 31° / 88°F | 27° / 81°F | 95 mm | 9 | 31° / 88°F |
| July | 59 | 31° / 88°F | 27° / 81°F | 156 mm | 9 | 30° / 86°F |
| August | 59 | 30° / 86°F | 27° / 81°F | 229 mm | 9 | 31° / 88°F |
| September | 59 | 30° / 86°F | 27° / 81°F | 404 mm | 8 | 31° / 88°F |
| October | 59 | 28° / 82°F | 26° / 79°F | 466 mm | 6 | 29° / 84°F |
| November | 59 | 26° / 79°F | 24° / 75°F | 188 mm | 5 | 26° / 79°F |
| December | 67 | 23° / 73°F | 21° / 70°F | 110 mm | 4 | 24° / 75°F |
Sea temperature in Dong Hoi by month
The sea off Dong Hoi is warmest in June at around 31°C / 88°F, and coolest in January at 21°C / 70°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Head-to-head
How Dong Hoi compares month by month: Dong Hoi vs Huế · Dong Hoi vs Da Nang · Dong Hoi vs Vinh · Dong Hoi vs Ubon Ratchathani · all comparisons
Dong Hoi: questions and answers
What kind of destination is Dong Hoi?
Dong Hoi is a beach resort in Vietnam with a tropical monsoon climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Dong Hoi get a year?
Dong Hoi gets about 1,435 hours of sunshine a year, at its best around February.
When is the best time to visit Dong Hoi?
The sunniest time to visit Dong Hoi is February, when the Sunshine Score peaks at 82/100 (with March and January close behind). Expect daytime highs around 23°C / 73°F.
What is the least sunny month in Dong Hoi?
July is the least sunny month in Dong Hoi, scoring 59/100 with about 156 mm of rain.
What is the sea temperature in Dong Hoi?
The sea in Dong Hoi ranges from about 21°C (January) to 31°C (June). Month-by-month sea temperatures are on this page.
How strong is the sun in Dong Hoi?
The typical midday UV index in Dong Hoi peaks around 9 (very high) in May, easing to about 4 (moderate) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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