Savannakhet climate — normals and trends
Savannakhet (Laos) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.8 °C and it receives 1,562 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 (28.4 °C on average) and the coldest is January (22.0 °C). Rainfall peaks in August.
Savannakhet averages 0 frost days, 235 hot days (≥ 30 °C) and 167 rainy days per year.
Savannakhet has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.5 °C (on 30 April 2024) and the coldest 5.7 °C (on 12 January 1955).
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
SavannakhetSavannakhet Province
- coords
- 16.57°, 104.76°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.8°C
Average daily high
30.8°C
Average daily low
21.9°C
Annual rainfall
1,562mm
Sunshine / day
9.7h
Mean relative humidity
75%
Average peak wind
14.9km/h
Seasonal range
6.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
235 d/yr
Rainy days (≥ 1 mm)
167 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.6 °C
Average feels-like low
24.4 °C
Average peak gust
34.0 km/h
Tropical nights (≥ 20 °C)
269 d/yr
Solar radiation
18.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.55 · 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
42.5 °C
30 April 2024
Coldest day
5.7 °C
12 January 1955
Wettest day
220 mm
5 September 1977
Windiest day
37.7 km/h
2 November 2009
Strongest gust
80.6 km/h
30 August 1990
Hottest feels-like
46.7 °C
21 April 2015
Coldest feels-like
1.4 °C
12 January 1955
Sunniest day
12.5 h
17 June 1948
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 | 28.4 °C | -0.4 °C | 0 mm | -6 mm |
| Feb | 31.7 °C | +0.8 °C | 1 mm | -14 mm |
| Mar | 33.1 °C | 0.0 °C | 18 mm | -24 mm |
| Apr | 35.5 °C | +1.6 °C | 57 mm | -23 mm |
| May | 32.9 °C | +0.4 °C | 218 mm | +25 mm |
| Jun | 31.9 °C | +0.5 °C | 234 mm | +2 mm |
| Jul | 30.5 °C | -0.2 °C | 353 mm | +94 mm |
| Aug | 31.5 °C | +1.2 °C | 305 mm | -1 mm |
| Sep | 30.6 °C | +0.5 °C | 295 mm | +7 mm |
| Oct | 31.1 °C | +1.1 °C | 174 mm | +64 mm |
| Nov | 28.2 °C | -1.2 °C | 105 mm | +79 mm |
| Dec | 29.4 °C | +1.3 °C | 0 mm | -4 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 Savannakhet?
Savannakhet has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.8 °C and it receives 1,562 mm of precipitation per year.
What is the hottest day ever recorded in Savannakhet?
The hottest day measured in Savannakhet between 1940 and 2025 was 30 April 2024, reaching 42.5 °C.
What is the coldest day in Savannakhet?
The coldest day measured in Savannakhet between 1940 and 2025 was 12 January 1955, at 5.7 °C.
Does it snow in Savannakhet?
Almost never: Savannakhet sees virtually no snow, with about 0 frost days per year.
Has the climate of Savannakhet warmed?
Yes: Savannakhet warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Savannakhet?
The wettest day measured in Savannakhet between 1940 and 2025 was 5 September 1977, with 220 mm of rain in 24 hours.
What was the windiest day in Savannakhet?
The windiest day measured in Savannakhet between 1940 and 2025 was 2 November 2009, with winds reaching 37.7 km/h.
What is the warmest month in Savannakhet?
The warmest month in Savannakhet is April (28.4 °C on average); the coldest is January (22.0 °C).
How much does it rain in Savannakhet?
Savannakhet receives on average 1,562 mm of precipitation per year, spread over about 167 rainy days.
Is it sunny in Savannakhet?
Savannakhet gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
Are there tropical nights in Savannakhet?
Yes: Savannakhet has on average 269 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Savannakhet?
In Savannakhet, between 1940 and 2025, the highest apparent temperature reached 46.7 °C on 21 April 2015, and the lowest was 1.4 °C on 12 January 1955.
Compare Savannakhet with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Savannakhet