Borikhan climate — normals and trends
Borikhan (Laos) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 24.6 °C and it receives 2,406 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 (26.8 °C on average) and the coldest is January (20.4 °C). Rainfall peaks in August.
Borikhan averages 0 frost days, 192 hot days (≥ 30 °C) and 186 rainy days per year.
Borikhan 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 40.6 °C (on 6 May 2023) and the coldest 2.0 °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
BorikhanBolikhamsai
- coords
- 18.56°, 103.73°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.6°C
Average daily high
29.9°C
Average daily low
20.6°C
Annual rainfall
2,406mm
Sunshine / day
9.1h
Mean relative humidity
79%
Average peak wind
8.4km/h
Seasonal range
6.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
192 d/yr
Rainy days (≥ 1 mm)
186 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.3 °C
Average feels-like low
23.7 °C
Average peak gust
26.3 km/h
Tropical nights (≥ 20 °C)
237 d/yr
Solar radiation
16.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.65 · 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
40.6 °C
6 May 2023
Coldest day
2.0 °C
12 January 1955
Wettest day
186 mm
19 August 1941
Windiest day
30.7 km/h
23 August 1987
Strongest gust
79.2 km/h
23 August 1987
Hottest feels-like
46.7 °C
7 May 2023
Coldest feels-like
-1.4 °C
2 January 1974
Sunniest day
12.8 h
24 June 1956
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 | 27.5 °C | -0.1 °C | 0 mm | -10 mm |
| Feb | 30.1 °C | +0.7 °C | 20 mm | +1 mm |
| Mar | 32.0 °C | +0.3 °C | 11 mm | -37 mm |
| Apr | 33.7 °C | +1.1 °C | 56 mm | -48 mm |
| May | 32.7 °C | +1.6 °C | 239 mm | -55 mm |
| Jun | 31.2 °C | +1.1 °C | 434 mm | -13 mm |
| Jul | 29.3 °C | -0.4 °C | 620 mm | +130 mm |
| Aug | 31.0 °C | +1.6 °C | 454 mm | -69 mm |
| Sep | 30.9 °C | +0.9 °C | 466 mm | +116 mm |
| Oct | 31.5 °C | +1.0 °C | 91 mm | -8 mm |
| Nov | 28.8 °C | -0.8 °C | 36 mm | +19 mm |
| Dec | 29.6 °C | +2.0 °C | 8 mm | +3 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 Borikhan?
Borikhan has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 24.6 °C and it receives 2,406 mm of precipitation per year.
What is the hottest day ever recorded in Borikhan?
The hottest day measured in Borikhan between 1940 and 2025 was 6 May 2023, reaching 40.6 °C.
What is the coldest day in Borikhan?
The coldest day measured in Borikhan between 1940 and 2025 was 12 January 1955, at 2.0 °C.
Does it snow in Borikhan?
Almost never: Borikhan sees virtually no snow, with about 0 frost days per year.
Has the climate of Borikhan warmed?
Yes: Borikhan warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Borikhan?
The wettest day measured in Borikhan between 1940 and 2025 was 19 August 1941, with 186 mm of rain in 24 hours.
What was the windiest day in Borikhan?
The windiest day measured in Borikhan between 1940 and 2025 was 23 August 1987, with winds reaching 30.7 km/h.
What is the warmest month in Borikhan?
The warmest month in Borikhan is April (26.8 °C on average); the coldest is January (20.4 °C).
How much does it rain in Borikhan?
Borikhan receives on average 2,406 mm of precipitation per year, spread over about 186 rainy days.
Is it sunny in Borikhan?
Borikhan gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
Are there tropical nights in Borikhan?
Yes: Borikhan has on average 237 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Borikhan?
In Borikhan, between 1940 and 2025, the highest apparent temperature reached 46.7 °C on 7 May 2023, and the lowest was -1.4 °C on 2 January 1974.
Compare Borikhan with another city
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Nearby cities
The climate around Borikhan