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Nam Định, Vietnam climate

Cwa Monsoon-influenced humid subtropical

Nam Định has a mildly seasonal tropical climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is June with an average daily high near 34°C, while the coldest is January averaging around 14°C at night. Precipitation totals about 1461 mm a year and is strongly seasonal — August alone averages 290 mm while February barely receives 21 mm.

☀️ Summers

Hot

Highs near 34°C in June.

❄️ Winters

Mild

Lows near 14°C in January.

🌧️ Rain

Wet

About 1461 mm of rain a year.

Wettest in August

⛅ Sky & trend

Often grey

Overcast skies dominate much of the year.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Nam Định climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	20	21	23	27	31	34	33	32	31	29	26	22
Avg temp (°C)	17	18	21	25	28	30	30	29	28	26	23	19
Avg low (°C)	14	16	18	22	25	27	27	26	25	22	19	15
Precipitation (mm)	34	21	49	71	166	135	209	290	254	155	54	24

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	20	21	23	27	31	34
Avg temp (°C)	17	18	21	25	28	30
Avg low (°C)	14	16	18	22	25	27
Precipitation (mm)	34	21	49	71	166	135

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	33	32	31	29	26	22
Avg temp (°C)	30	29	28	26	23	19
Avg low (°C)	27	26	25	22	19	15
Precipitation (mm)	209	290	254	155	54	24

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	72	76	79	77	74	82	81	80	71	59	59	66
Relative humidity (%)	81	81	82	82	82	85	85	85	84	82	81	79
Wind speed (m/s)	2.9	3.0	3.0	2.8	2.6	2.6	2.5	2.1	2.2	2.6	2.6	2.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	72	76	79	77	74	82
Relative humidity (%)	81	81	82	82	82	85
Wind speed (m/s)	2.9	3.0	3.0	2.8	2.6	2.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	81	80	71	59	59	66
Relative humidity (%)	85	85	84	82	81	79
Wind speed (m/s)	2.5	2.1	2.2	2.6	2.6	2.8

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at Nam Dinh, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →