Muang Phonsavan climate — normals and trends
Muang Phonsavan (Laos) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 19.7 °C and it receives 1,355 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 June (22.8 °C on average) and the coldest is December (15.1 °C). Rainfall peaks in August.
Muang Phonsavan averages 0 frost days, 9 hot days (≥ 30 °C) and 189 rainy days per year.
Muang Phonsavan has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.7 °C (on 22 June 2019) and the coldest -3.1 °C (on 2 January 1974).
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
Muang PhonsavanXiangkhoang
- coords
- 19.45°, 103.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.7°C
Average daily high
25.3°C
Average daily low
15.5°C
Annual rainfall
1,355mm
Sunshine / day
9.0h
Mean relative humidity
82%
Average peak wind
9.8km/h
Seasonal range
7.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
189 d/yr
Annual snowfall
0.0 cm
Average feels-like high
27.4 °C
Average feels-like low
16.6 °C
Average peak gust
28.3 km/h
Tropical nights (≥ 20 °C)
54 d/yr
Solar radiation
16.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.65 · 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
35.7 °C
22 June 2019
Coldest day
-3.1 °C
2 January 1974
Wettest day
193 mm
25 June 2011
Windiest day
29.0 km/h
4 September 1951
Strongest gust
80.3 km/h
16 September 2017
Hottest feels-like
38.6 °C
22 June 2019
Coldest feels-like
-7.0 °C
2 January 1974
Sunniest day
12.8 h
13 June 2013
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 | 22.3 °C | -0.3 °C | 0 mm | -18 mm |
| Feb | 24.9 °C | +0.3 °C | 28 mm | +4 mm |
| Mar | 26.8 °C | +0.4 °C | 15 mm | -52 mm |
| Apr | 27.1 °C | 0.0 °C | 138 mm | +17 mm |
| May | 27.4 °C | +0.2 °C | 137 mm | -26 mm |
| Jun | 27.7 °C | +0.8 °C | 205 mm | +15 mm |
| Jul | 26.0 °C | -0.3 °C | 359 mm | +141 mm |
| Aug | 27.0 °C | +1.0 °C | 318 mm | +63 mm |
| Sep | 26.8 °C | +0.9 °C | 325 mm | +138 mm |
| Oct | 26.0 °C | +1.1 °C | 39 mm | -39 mm |
| Nov | 22.7 °C | -0.8 °C | 32 mm | +9 mm |
| Dec | 23.2 °C | +1.3 °C | 21 mm | +11 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 Muang Phonsavan?
Muang Phonsavan has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 19.7 °C and it receives 1,355 mm of precipitation per year.
What is the hottest day ever recorded in Muang Phonsavan?
The hottest day measured in Muang Phonsavan between 1940 and 2025 was 22 June 2019, reaching 35.7 °C.
What is the coldest day in Muang Phonsavan?
The coldest day measured in Muang Phonsavan between 1940 and 2025 was 2 January 1974, at -3.1 °C.
Does it snow in Muang Phonsavan?
Almost never: Muang Phonsavan sees virtually no snow, with about 0 frost days per year.
Has the climate of Muang Phonsavan warmed?
Yes: Muang Phonsavan warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Muang Phonsavan?
The wettest day measured in Muang Phonsavan between 1940 and 2025 was 25 June 2011, with 193 mm of rain in 24 hours.
What was the windiest day in Muang Phonsavan?
The windiest day measured in Muang Phonsavan between 1940 and 2025 was 4 September 1951, with winds reaching 29.0 km/h.
What is the warmest month in Muang Phonsavan?
The warmest month in Muang Phonsavan is June (22.8 °C on average); the coldest is December (15.1 °C).
How much does it rain in Muang Phonsavan?
Muang Phonsavan receives on average 1,355 mm of precipitation per year, spread over about 189 rainy days.
Is it sunny in Muang Phonsavan?
Muang Phonsavan gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
Are there tropical nights in Muang Phonsavan?
Yes: Muang Phonsavan has on average 54 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Muang Phonsavan?
In Muang Phonsavan, between 1940 and 2025, the highest apparent temperature reached 38.6 °C on 22 June 2019, and the lowest was -7.0 °C on 2 January 1974.
Compare Muang Phonsavan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Muang Phonsavan