Nam Định climate
Nam Định (Vietnam) has a monsoon-influenced humid subtropical climate (Köppen Cwa). The average temperature over the year is 24 °C75 °F, and about 1,637 mm64 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Nam Định climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2169 | 1355 | 1762 | 331.3 |
| Feb | 2373 | 1558 | 1966 | 210.8 |
| Mar | 2578 | 1763 | 2170 | 481.9 |
| Apr | 2984 | 2170 | 2577 | 702.8 |
| May | 3188 | 2476 | 2882 | 1746.9 |
| Jun | 3189 | 2679 | 2984 | 1837.2 |
| Jul | 3189 | 2679 | 2984 | 27911 |
| Aug | 3188 | 2679 | 2883 | 32413 |
| Sep | 3087 | 2576 | 2781 | 26610 |
| Oct | 2883 | 2271 | 2577 | 1556.1 |
| Nov | 2578 | 1864 | 2271 | 572.3 |
| Dec | 2171 | 1457 | 1864 | 271.1 |
| Year | 3189 | 1355 | 2475 | 1,63764 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 81% | 75% | 2.4 | 11:01 |
| Feb | 82% | 79% | 2.7 | 11:27 |
| Mar | 83% | 84% | 2.9 | 11:59 |
| Apr | 82% | 78% | 3.9 | 12:36 |
| May | 83% | 76% | 5.1 | 13:06 |
| Jun | 85% | 84% | 5.3 | 13:22 |
| Jul | 85% | 81% | 5.1 | 13:15 |
| Aug | 86% | 82% | 4.6 | 12:49 |
| Sep | 84% | 73% | 4.5 | 12:14 |
| Oct | 83% | 59% | 4.0 | 11:38 |
| Nov | 82% | 59% | 3.4 | 11:08 |
| Dec | 79% | 68% | 2.7 | 10:54 |
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 Nam Định is like
The warmest month is June, with an average high of 31 °C89 °F and a low of 26 °C79 °F. The coldest is January, when highs average 21 °C69 °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 1,637 mm64 in of precipitation per year. The wettest three-month stretch is July–September, which brings 53% of the annual total. The wettest month is August (324 mm13 in), the driest is February (21 mm0.8 in).
Relative humidity ranges from 79% in December to 86% in August. The clearest skies (lowest average cloud amount, 59%) are typical of November. Average wind speed near the ground ranges from 7 km/h (4 mph) in August to 11 km/h (7 mph) in February. Daylight lasts from about 10.9 hours in December to 13.4 hours in June.
Best time to visit Nam Định
Based on these averages, the most comfortable months for sightseeing and outdoor activities are November–March: average highs of 21 °C69 °F to 25 °C78 °F with 21 mm0.8 in to 57 mm2.3 in of precipitation per month.
The most challenging month is August, which is hot, with average highs of 31 °C88 °F, very wet (324 mm13 in) and humid (86% 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 Nam Định
- Wetter months (May–October) — highs 2883 to 31 °C89 °F, lows 2271 to 26 °C79 °F, about 230 mm9.1 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 2169 to 29 °C84 °F, lows 1355 to 21 °C70 °F, about 43 mm1.7 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Nam Định compares
Compared with Haiphong, about 71 km to the northeast, Nam Định has practically the same average temperature and receives a similar amount of precipitation.
Of the 75 places in Vietnam covered by World Climates, Nam Định is the 53rd warmest by annual mean temperature and the 24th 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: Beihai (China, Cwa), Zhanjiang (China, Cwa) and Maoming (China, Cfa).
The same NASA POWER grid cell also contains Hưng Yên (pop. 118,646). Their long-term averages in this dataset are essentially the same as for Nam Định, so they do not have separate pages.
Nearby places
- Hoa Lư 28 km · 24 °C75 °F · 1,637 mm64 in
- Phủ Lý 30 km · 24 °C75 °F · 1,590 mm63 in
- Hải Dương 59 km · 24 °C75 °F · 1,616 mm64 in
- Gia Lâm 70 km · 24 °C75 °F · 1,616 mm64 in
- Haiphong 71 km · 24 °C75 °F · 1,643 mm65 in
- Thanh Xuân 74 km · 24 °C75 °F · 1,606 mm63 in
- Hanoi 74 km · 24 °C75 °F · 1,606 mm63 in
- Thanh Hóa 83 km · 24 °C75 °F · 1,613 mm63 in
Frequently asked questions
What is the warmest month in Nam Định?
June is the warmest month in Nam Định, with an average high of 31 °C (89 °F) and an average low of 26 °C (79 °F).
What is the coldest month in Nam Định?
January is the coldest month, with an average high of 21 °C (69 °F) and an average low of 13 °C (55 °F).
When does it rain the most in Nam Định?
August is the wettest month with about 324 mm (12.8 in) of precipitation; February is the driest with about 21 mm (0.8 in).
What is the best time to visit Nam Định?
Judging by long-term averages, the most comfortable months are November–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.