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Loei, Thailand climate
Aw Tropical savanna (dry winter)
Loei has a mildly seasonal tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is April with an average daily high near 36°C, while the coldest is December averaging around 15°C at night. Precipitation totals about 1333 mm a year and is strongly seasonal — September alone averages 284 mm while January barely receives 9 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Loei climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 33 | 35 | 36 | 34 | 33 | 33 | 32 | 32 | 31 | 31 | 29 |
| Avg temp (°C) | 23 | 25 | 28 | 29 | 29 | 29 | 28 | 28 | 27 | 27 | 25 | 22 |
| Avg low (°C) | 15 | 17 | 20 | 23 | 24 | 24 | 24 | 24 | 23 | 22 | 19 | 15 |
| Precipitation (mm) | 9 | 44 | 55 | 87 | 182 | 183 | 178 | 207 | 284 | 75 | 14 | 14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 33 | 35 | 36 | 34 | 33 |
| Avg temp (°C) | 23 | 25 | 28 | 29 | 29 | 29 |
| Avg low (°C) | 15 | 17 | 20 | 23 | 24 | 24 |
| Precipitation (mm) | 9 | 44 | 55 | 87 | 182 | 183 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 32 | 32 | 31 | 31 | 29 |
| Avg temp (°C) | 28 | 28 | 27 | 27 | 25 | 22 |
| Avg low (°C) | 24 | 24 | 23 | 22 | 19 | 15 |
| Precipitation (mm) | 178 | 207 | 284 | 75 | 14 | 14 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 2 | 3 | 5 | 10 | 17 | 16 | 16 | 18 | 19 | 11 | 3 | 1 |
| Days with high ≥ 32°C (days) | 8 | 17 | 24 | 24 | 23 | 22 | 19 | 16 | 14 | 13 | 9 | 4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 2 | 3 | 5 | 10 | 17 | 16 |
| Days with high ≥ 32°C (days) | 8 | 17 | 24 | 24 | 23 | 22 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 16 | 18 | 19 | 11 | 3 | 1 |
| Days with high ≥ 32°C (days) | 19 | 16 | 14 | 13 | 9 | 4 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 31 | 29 | 41 | 58 | 80 | 89 | 92 | 92 | 83 | 60 | 41 | 31 |
| Relative humidity (%) | 65 | 56 | 52 | 57 | 72 | 79 | 82 | 85 | 86 | 84 | 79 | 73 |
| Wind speed (m/s) | 1.7 | 1.8 | 1.9 | 1.8 | 1.6 | 1.8 | 1.9 | 1.8 | 1.4 | 1.5 | 1.6 | 1.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 31 | 29 | 41 | 58 | 80 | 89 |
| Relative humidity (%) | 65 | 56 | 52 | 57 | 72 | 79 |
| Wind speed (m/s) | 1.7 | 1.8 | 1.9 | 1.8 | 1.6 | 1.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 92 | 92 | 83 | 60 | 41 | 31 |
| Relative humidity (%) | 82 | 85 | 86 | 84 | 79 | 73 |
| Wind speed (m/s) | 1.9 | 1.8 | 1.4 | 1.5 | 1.6 | 1.7 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Loei, a weather station, about 5 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.