Loei climate — normals and trends
Loei (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.1 °C and it receives 1,375 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 (27.5 °C on average) and the coldest is December (20.7 °C). Rainfall peaks in September.
Loei averages 0 frost days, 206 hot days (≥ 30 °C) and 167 rainy days per year.
Loei has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.4 °C (on 27 April 2024) and the coldest 2.4 °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
LoeiLoei
- coords
- 17.49°, 101.73°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.1°C
Average daily high
30.3°C
Average daily low
20.9°C
Annual rainfall
1,375mm
Sunshine / day
9.7h
Mean relative humidity
75%
Average peak wind
9.4km/h
Seasonal range
6.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
206 d/yr
Rainy days (≥ 1 mm)
167 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.2 °C
Average feels-like low
23.8 °C
Average peak gust
27.5 km/h
Tropical nights (≥ 20 °C)
248 d/yr
Solar radiation
17.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.75 · 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
40.4 °C
27 April 2024
Coldest day
2.4 °C
12 January 1955
Wettest day
167 mm
15 September 1969
Windiest day
26.0 km/h
26 October 1943
Strongest gust
75.2 km/h
22 October 1952
Hottest feels-like
46.5 °C
15 April 1953
Coldest feels-like
-1.1 °C
12 January 1955
Sunniest day
12.8 h
4 July 2021
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 | -0.3 °C | 0 mm | -11 mm |
| Feb | 30.8 °C | +0.3 °C | 50 mm | +32 mm |
| Mar | 32.9 °C | 0.0 °C | 4 mm | -44 mm |
| Apr | 34.2 °C | +0.8 °C | 75 mm | -21 mm |
| May | 32.6 °C | +0.6 °C | 215 mm | +8 mm |
| Jun | 32.4 °C | +1.0 °C | 135 mm | -37 mm |
| Jul | 30.9 °C | 0.0 °C | 203 mm | +30 mm |
| Aug | 31.7 °C | +1.3 °C | 288 mm | +58 mm |
| Sep | 31.0 °C | +1.0 °C | 217 mm | -52 mm |
| Oct | 30.7 °C | +1.3 °C | 70 mm | -49 mm |
| Nov | 27.4 °C | -0.7 °C | 74 mm | +47 mm |
| Dec | 27.6 °C | +0.9 °C | 21 mm | +14 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 Loei?
Loei has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.1 °C and it receives 1,375 mm of precipitation per year.
What is the hottest day ever recorded in Loei?
The hottest day measured in Loei between 1940 and 2025 was 27 April 2024, reaching 40.4 °C.
What is the coldest day in Loei?
The coldest day measured in Loei between 1940 and 2025 was 12 January 1955, at 2.4 °C.
Does it snow in Loei?
Almost never: Loei sees virtually no snow, with about 0 frost days per year.
Has the climate of Loei warmed?
Yes: Loei warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Loei?
The wettest day measured in Loei between 1940 and 2025 was 15 September 1969, with 167 mm of rain in 24 hours.
What was the windiest day in Loei?
The windiest day measured in Loei between 1940 and 2025 was 26 October 1943, with winds reaching 26.0 km/h.
What is the warmest month in Loei?
The warmest month in Loei is April (27.5 °C on average); the coldest is December (20.7 °C).
How much does it rain in Loei?
Loei receives on average 1,375 mm of precipitation per year, spread over about 167 rainy days.
Is it sunny in Loei?
Loei gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
Are there tropical nights in Loei?
Yes: Loei has on average 248 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Loei?
In Loei, between 1940 and 2025, the highest apparent temperature reached 46.5 °C on 15 April 1953, and the lowest was -1.1 °C on 12 January 1955.
Compare Loei with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Loei