Long Thành climate — normals and trends
Long Thành (Vietnam) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.8 °C and it receives 1,953 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 (28.6 °C on average) and the coldest is December (25.6 °C). Rainfall peaks in September.
Long Thành averages 0 frost days, 259 hot days (≥ 30 °C) and 222 rainy days per year.
Long Thành has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.4 °C (on 28 April 1975) and the coldest 16.3 °C (on 14 January 1963).
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
Long ThànhDong Nai
- coords
- 10.79°, 106.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.8°C
Average daily high
31.0°C
Average daily low
24.1°C
Annual rainfall
1,953mm
Sunshine / day
10.0h
Mean relative humidity
81%
Average peak wind
12.6km/h
Seasonal range
3.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
259 d/yr
Rainy days (≥ 1 mm)
222 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.6 °C
Average feels-like low
28.4 °C
Average peak gust
30.4 km/h
Tropical nights (≥ 20 °C)
358 d/yr
Solar radiation
18.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.79 · 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
38.4 °C
28 April 1975
Coldest day
16.3 °C
14 January 1963
Wettest day
150 mm
4 October 1985
Windiest day
33.1 km/h
7 November 1988
Strongest gust
74.5 km/h
18 August 1957
Hottest feels-like
44.1 °C
18 May 2010
Coldest feels-like
16.6 °C
30 December 1975
Sunniest day
12.2 h
13 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 | 29.7 °C | -0.7 °C | 34 mm | +13 mm |
| Feb | 31.0 °C | -0.8 °C | 31 mm | +20 mm |
| Mar | 32.3 °C | -0.5 °C | 23 mm | -2 mm |
| Apr | 33.3 °C | +0.1 °C | 53 mm | -16 mm |
| May | 32.9 °C | +0.7 °C | 265 mm | +68 mm |
| Jun | 31.2 °C | +0.3 °C | 306 mm | +44 mm |
| Jul | 31.2 °C | +0.8 °C | 258 mm | -25 mm |
| Aug | 31.3 °C | +1.0 °C | 306 mm | +15 mm |
| Sep | 30.8 °C | +0.6 °C | 392 mm | +73 mm |
| Oct | 30.9 °C | +0.8 °C | 299 mm | +30 mm |
| Nov | 30.2 °C | +0.3 °C | 180 mm | +38 mm |
| Dec | 30.3 °C | +0.7 °C | 70 mm | +7 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 Long Thành?
Long Thành has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.8 °C and it receives 1,953 mm of precipitation per year.
What is the hottest day ever recorded in Long Thành?
The hottest day measured in Long Thành between 1940 and 2025 was 28 April 1975, reaching 38.4 °C.
What is the coldest day in Long Thành?
The coldest day measured in Long Thành between 1940 and 2025 was 14 January 1963, at 16.3 °C.
Does it snow in Long Thành?
Almost never: Long Thành sees virtually no snow, with about 0 frost days per year.
Has the climate of Long Thành warmed?
Yes: Long Thành warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Long Thành?
The wettest day measured in Long Thành between 1940 and 2025 was 4 October 1985, with 150 mm of rain in 24 hours.
What was the windiest day in Long Thành?
The windiest day measured in Long Thành between 1940 and 2025 was 7 November 1988, with winds reaching 33.1 km/h.
What is the warmest month in Long Thành?
The warmest month in Long Thành is April (28.6 °C on average); the coldest is December (25.6 °C).
How much does it rain in Long Thành?
Long Thành receives on average 1,953 mm of precipitation per year, spread over about 222 rainy days.
Is it sunny in Long Thành?
Long Thành gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Long Thành?
Yes: Long Thành has on average 358 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Long Thành?
In Long Thành, between 1940 and 2025, the highest apparent temperature reached 44.1 °C on 18 May 2010, and the lowest was 16.6 °C on 30 December 1975.
Compare Long Thành with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Long Thành