| Average climate data for Mae Hong Son, Thailand | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 30 | 33 | 37 | 39 | 36 | 33 | 32 | 32 | 33 | 33 | 31 | 29 | 39 |
| Average minimum temperature (°C) | 14 | 14 | 18 | 22 | 24 | 24 | 23 | 23 | 23 | 22 | 19 | 15 | 14 |
| Average precipitation (mm) | 6 | 6 | 17 | 63 | 174 | 193 | 224 | 237 | 200 | 115 | 45 | 10 | 1,289 |
| Average rainfall days (days) | 1 | 1 | 1 | 5 | 17 | 22 | 25 | 26 | 20 | 13 | 5 | 2 | 138 |
| Average relative humidity (%) | 74 | 66 | 55 | 54 | 71 | 80 | 83 | 83 | 84 | 81 | 81 | 78 | 74 |
| Average daily daylight hours (h) | 11 | 11 | 12 | 12 | 13 | 13 | 13 | 12 | 12 | 11 | 11 | 11 | 12 |
| Average daily sunshine hours (h) | 9 | 10 | 10 | 9 | 7 | 5 | 5 | 5 | 5 | 7 | 8 | 8 | 7 |
| Average UV index | 8 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 10 | 9 | 8 | 11 |
The warmest month, with the highest average maximum temperature, is April (38.8 °C). The month with the lowest average maximum temperature is December (28.9 °C). Overall, the average maximum temperature over the whole year is 33.1 °C.
The month with the highest average minimum temperature is June (23.8 °C). The coldest month, with the lowest average minimum temperature, is January (13.8 °C). Overall, the average minimum temperature over the whole year is 20.1 °C.
The wettest month, with the highest amount of precipitation, is August (236.7 mm). The driest month, with the least amount of precipitation, is February (6 mm). Over the whole year there are 1,289.3 mm of rainfall on average.
The month with the most days of rain is August (26 days). The month with the fewest days of rain is January (0.9 days). Over the whole year there are 138 days of rain on average.
The month with the highest average relative humidity is September (83.7 %). The month with the lowest average relative humidity is April (54 %). The overall average relative humidity over the whole year is 74.1 %.
The month with the longest days, so the most daylight, is June (Average daylight: 13 h). The month with the shortest days, so the least daylight, is December (Average daylight: 11 h). Over the whole year there are 11.9 h of daylight per day on average.
The month with the most sunshine per day is February (Average sunshine: 10.1 h). The month with the least sunshine per day is September (Average sunshine: 4.9 h). Over the whole year there are 7.3 h of sunlight per day on average.
The months with the highest average UV index are March, April, May, June, July, August and September (UV index: 12). The months with the lowest average UV index are January and December (UV index: 8). Over the whole year the average UV index is 10.8.
