Tan An climate — normals and trends
Tan An (Vietnam) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.0 °C and it receives 1,820 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is April (28.7 °C on average) and the coldest is January (25.6 °C). Rainfall peaks in September.
Tan An averages 0 frost days, 282 hot days (≥ 30 °C) and 220 rainy days per year.
Tan An has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.0 °C (on 21 May 1983) and the coldest 16.1 °C (on 4 January 1940).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Tan AnTay Ninh
- coords
- 10.54°, 106.41°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.0°C
Average daily high
31.2°C
Average daily low
24.3°C
Annual rainfall
1,820mm
Sunshine / day
10.2h
Mean relative humidity
81%
Average peak wind
13.0km/h
Seasonal range
3.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
282 d/yr
Rainy days (≥ 1 mm)
220 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.8 °C
Average feels-like low
28.7 °C
Average peak gust
31.4 km/h
Tropical nights (≥ 20 °C)
359 d/yr
Solar radiation
18.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.77 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
38.0 °C
21 May 1983
Coldest day
16.1 °C
4 January 1940
Wettest day
108 mm
25 November 2018
Windiest day
29.8 km/h
18 August 1957
Strongest gust
70.9 km/h
27 June 1992
Hottest feels-like
44.9 °C
22 May 2024
Coldest feels-like
15.5 °C
12 January 1955
Sunniest day
12.2 h
12 June 1946
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 29.8 °C | -0.4 °C | 13 mm | -8 mm |
| Feb | 31.1 °C | -0.2 °C | 34 mm | +23 mm |
| Mar | 32.1 °C | -0.5 °C | 18 mm | -8 mm |
| Apr | 33.4 °C | 0.0 °C | 69 mm | -6 mm |
| May | 33.0 °C | +0.3 °C | 265 mm | +72 mm |
| Jun | 31.6 °C | 0.0 °C | 247 mm | +20 mm |
| Jul | 31.6 °C | +0.6 °C | 208 mm | -31 mm |
| Aug | 31.9 °C | +1.0 °C | 248 mm | +2 mm |
| Sep | 31.3 °C | +0.5 °C | 334 mm | +35 mm |
| Oct | 31.6 °C | +1.1 °C | 290 mm | +10 mm |
| Nov | 30.4 °C | +0.2 °C | 205 mm | +61 mm |
| Dec | 30.6 °C | +0.9 °C | 95 mm | +34 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Tan An?
Tan An has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.0 °C and it receives 1,820 mm of precipitation per year.
What is the hottest day ever recorded in Tan An?
The hottest day measured in Tan An between 1940 and 2025 was 21 May 1983, reaching 38.0 °C.
What is the coldest day in Tan An?
The coldest day measured in Tan An between 1940 and 2025 was 4 January 1940, at 16.1 °C.
Does it snow in Tan An?
Almost never: Tan An sees virtually no snow, with about 0 frost days per year.
Has the climate of Tan An warmed?
Yes: Tan An warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tan An?
The wettest day measured in Tan An between 1940 and 2025 was 25 November 2018, with 108 mm of rain in 24 hours.
What was the windiest day in Tan An?
The windiest day measured in Tan An between 1940 and 2025 was 18 August 1957, with winds reaching 29.8 km/h.
What is the warmest month in Tan An?
The warmest month in Tan An is April (28.7 °C on average); the coldest is January (25.6 °C).
How much does it rain in Tan An?
Tan An receives on average 1,820 mm of precipitation per year, spread over about 220 rainy days.
Is it sunny in Tan An?
Tan An gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
Are there tropical nights in Tan An?
Yes: Tan An has on average 359 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tan An?
In Tan An, between 1940 and 2025, the highest apparent temperature reached 44.9 °C on 22 May 2024, and the lowest was 15.5 °C on 12 January 1955.
Compare Tan An with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tan An