Thanh Hóa climate
Thanh Hóa (Vietnam) has a monsoon-influenced humid subtropical climate (Köppen Cwa). The average temperature over the year is 24 °C75 °F, and about 1,613 mm63 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Thanh Hóa climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2170 | 1355 | 1763 | 301.2 |
| Feb | 2475 | 1559 | 1967 | 180.7 |
| Mar | 2780 | 1864 | 2272 | 451.8 |
| Apr | 3086 | 2170 | 2678 | 642.5 |
| May | 3290 | 2476 | 2883 | 1626.4 |
| Jun | 3290 | 2678 | 2984 | 1445.7 |
| Jul | 3290 | 2679 | 2984 | 2439.6 |
| Aug | 3188 | 2678 | 2883 | 29912 |
| Sep | 3087 | 2476 | 2781 | 30912 |
| Oct | 2882 | 2171 | 2577 | 2038.0 |
| Nov | 2577 | 1864 | 2271 | 652.6 |
| Dec | 2171 | 1456 | 1864 | 301.2 |
| Year | 3290 | 1355 | 2475 | 1,61363 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 83% | 74% | 2.5 | 11:03 |
| Feb | 83% | 77% | 2.9 | 11:28 |
| Mar | 83% | 80% | 3.2 | 11:59 |
| Apr | 81% | 74% | 4.3 | 12:35 |
| May | 81% | 78% | 5.4 | 13:04 |
| Jun | 82% | 84% | 5.5 | 13:19 |
| Jul | 83% | 84% | 5.2 | 13:13 |
| Aug | 85% | 85% | 4.7 | 12:48 |
| Sep | 85% | 77% | 4.4 | 12:13 |
| Oct | 85% | 66% | 3.6 | 11:39 |
| Nov | 84% | 63% | 3.3 | 11:10 |
| Dec | 82% | 71% | 2.5 | 10:56 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Thanh Hóa is like
The warmest month is June, with an average high of 32 °C90 °F and a low of 26 °C78 °F. The coldest is January, when highs average 21 °C70 °F and lows 13 °C55 °F. There is a clear seasonal cycle, with 12.2 °C21.9 °F between the average temperature of the warmest and the coolest month.
It is wet, with about 1,613 mm63 in of precipitation per year. The wettest three-month stretch is July–September, which brings 53% of the annual total. Months with less than 20 mm0.8 in on average: February. The wettest month is September (309 mm12 in), the driest is February (18 mm0.7 in).
Relative humidity ranges from 81% in April to 85% in August. The clearest skies (lowest average cloud amount, 63%) are typical of November. Average wind speed near the ground ranges from 6 km/h (4 mph) in August to 9 km/h (5 mph) in December. Daylight lasts from about 10.9 hours in December to 13.3 hours in June.
Best time to visit Thanh Hóa
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December–March: average highs of 21 °C70 °F to 27 °C80 °F with 18 mm0.7 in to 45 mm1.8 in of precipitation per month.
The most challenging month is August, which is hot, with average highs of 31 °C88 °F, very wet (299 mm12 in) and humid (85% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Thanh Hóa
- Wetter months (May–October) — highs 2882 to 32 °C90 °F, lows 2171 to 26 °C79 °F, about 227 mm8.9 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (November–April) — highs 2170 to 30 °C86 °F, lows 1355 to 21 °C70 °F, about 42 mm1.7 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Thanh Hóa compares
Compared with Hanoi, about 136 km to the north, Thanh Hóa is on average 0.4 °C0.7 °F warmer and receives a similar amount of precipitation. The difference is largest in December (1 °C1.8 °F warmer).
Of the 75 places in Vietnam covered by World Climates, Thanh Hóa is the 52nd warmest by annual mean temperature and the 29th wettest by annual precipitation. See all of them on the Vietnam climate page.
Places in other countries with the most similar temperature and rainfall pattern: Xiuying (China, Aw), Zhanjiang (China, Cwa) and Beihai (China, Cwa).
Nearby places
- Nghi Sơn 53 km · 24 °C75 °F · 1,701 mm67 in
- Hoa Lư 56 km · 24 °C75 °F · 1,637 mm64 in
- Nam Định 83 km · 24 °C75 °F · 1,637 mm64 in
- Phủ Lý 84 km · 24 °C75 °F · 1,590 mm63 in
- Vinh 126 km · 25 °C78 °F · 1,774 mm70 in
- Thanh Xuân 133 km · 24 °C75 °F · 1,606 mm63 in
- Hanoi 136 km · 24 °C75 °F · 1,606 mm63 in
- Gia Lâm 137 km · 24 °C75 °F · 1,616 mm64 in
Frequently asked questions
What is the warmest month in Thanh Hóa?
June is the warmest month in Thanh Hóa, with an average high of 32 °C (90 °F) and an average low of 26 °C (78 °F).
What is the coldest month in Thanh Hóa?
January is the coldest month, with an average high of 21 °C (70 °F) and an average low of 13 °C (55 °F).
When does it rain the most in Thanh Hóa?
September is the wettest month with about 309 mm (12.2 in) of precipitation; February is the driest with about 18 mm (0.7 in).
What is the best time to visit Thanh Hóa?
Judging by long-term averages, the most comfortable months are December–March.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 74 m, while Thanh Hóa lies at about 5 m. Temperatures on this page were therefore adjusted by +0.5 °C0.8 °F using the standard lapse rate of 6.5 °C per 1,000 m.