Ban Khoan climate — normals and trends
Ban Khoan (Laos) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.5 °C and it receives 1,967 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 (27.3 °C on average) and the coldest is January (19.6 °C). Rainfall peaks in August.
Ban Khoan averages 0 frost days, 201 hot days (≥ 30 °C) and 175 rainy days per year.
Ban Khoan has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.4 °C (on 29 April 1960) and the coldest 3.7 °C (on 27 December 1999).
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
Ban KhoanBokeo
- coords
- 20.35°, 100.09°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.5°C
Average daily high
30.4°C
Average daily low
20.1°C
Annual rainfall
1,967mm
Sunshine / day
9.4h
Mean relative humidity
78%
Average peak wind
7.6km/h
Seasonal range
7.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
201 d/yr
Rainy days (≥ 1 mm)
175 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.1 °C
Average feels-like low
23.2 °C
Average peak gust
25.4 km/h
Tropical nights (≥ 20 °C)
221 d/yr
Solar radiation
17.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.78 · 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
42.4 °C
29 April 1960
Coldest day
3.7 °C
27 December 1999
Wettest day
158 mm
27 August 1973
Windiest day
22.4 km/h
9 November 1990
Strongest gust
64.1 km/h
9 November 1990
Hottest feels-like
45.9 °C
11 May 2016
Coldest feels-like
1.4 °C
27 December 1999
Sunniest day
13.0 h
12 July 1941
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 | 27.7 °C | +0.3 °C | 0 mm | -20 mm |
| Feb | 31.9 °C | +1.3 °C | 3 mm | -12 mm |
| Mar | 34.5 °C | +1.2 °C | 5 mm | -33 mm |
| Apr | 35.0 °C | +0.8 °C | 31 mm | -62 mm |
| May | 32.8 °C | +0.4 °C | 239 mm | -8 mm |
| Jun | 32.4 °C | +1.2 °C | 251 mm | -42 mm |
| Jul | 30.5 °C | 0.0 °C | 502 mm | +148 mm |
| Aug | 31.8 °C | +1.5 °C | 477 mm | +84 mm |
| Sep | 32.0 °C | +1.7 °C | 212 mm | -99 mm |
| Oct | 31.8 °C | +2.1 °C | 112 mm | -24 mm |
| Nov | 27.9 °C | -0.2 °C | 109 mm | +63 mm |
| Dec | 28.0 °C | +1.7 °C | 2 mm | -19 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 Ban Khoan?
Ban Khoan has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.5 °C and it receives 1,967 mm of precipitation per year.
What is the hottest day ever recorded in Ban Khoan?
The hottest day measured in Ban Khoan between 1940 and 2025 was 29 April 1960, reaching 42.4 °C.
What is the coldest day in Ban Khoan?
The coldest day measured in Ban Khoan between 1940 and 2025 was 27 December 1999, at 3.7 °C.
Does it snow in Ban Khoan?
Almost never: Ban Khoan sees virtually no snow, with about 0 frost days per year.
Has the climate of Ban Khoan warmed?
Yes: Ban Khoan warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ban Khoan?
The wettest day measured in Ban Khoan between 1940 and 2025 was 27 August 1973, with 158 mm of rain in 24 hours.
What was the windiest day in Ban Khoan?
The windiest day measured in Ban Khoan between 1940 and 2025 was 9 November 1990, with winds reaching 22.4 km/h.
What is the warmest month in Ban Khoan?
The warmest month in Ban Khoan is April (27.3 °C on average); the coldest is January (19.6 °C).
How much does it rain in Ban Khoan?
Ban Khoan receives on average 1,967 mm of precipitation per year, spread over about 175 rainy days.
Is it sunny in Ban Khoan?
Ban Khoan gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
Are there tropical nights in Ban Khoan?
Yes: Ban Khoan has on average 221 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ban Khoan?
In Ban Khoan, between 1940 and 2025, the highest apparent temperature reached 45.9 °C on 11 May 2016, and the lowest was 1.4 °C on 27 December 1999.
Compare Ban Khoan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ban Khoan