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Mae Hong Son, Thailand climate

Aw Tropical savanna (dry winter)

Mae Hong Son has a mildly seasonal tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is April with an average daily high near 39°C, while the coldest is January averaging around 14°C at night. Precipitation totals about 1404 mm a year and is strongly seasonal — August alone averages 273 mm while December barely receives 8 mm.

☀️ All year

Very hot

Daytime highs near 39°C most of the year.

About 210 days a year above 32 °C

🌙 Nights

Stays warm

Even the coolest nights stay near 14°C.

🌧️ Rain

Wet

About 1404 mm of rain a year.

Wettest in August

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

+0.3 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Mae Hong Son climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	30	33	37	39	36	34	32	32	33	33	31	29
Avg temp (°C)	22	24	27	31	30	29	28	28	28	27	25	23
Avg low (°C)	14	14	18	22	24	24	24	23	23	22	19	16
Precipitation (mm)	18	16	23	111	179	189	221	273	202	115	47	8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	30	33	37	39	36	34
Avg temp (°C)	22	24	27	31	30	29
Avg low (°C)	14	14	18	22	24	24
Precipitation (mm)	18	16	23	111	179	189

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	32	32	33	33	31	29
Avg temp (°C)	28	28	28	27	25	23
Avg low (°C)	24	23	23	22	19	16
Precipitation (mm)	221	273	202	115	47	8

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	1	0.7	2	5	16	21	23	24	19	14	5	2
Days with high ≥ 32°C (days)	3	19	27	27	26	22	18	17	21	21	7	2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	1	0.7	2	5	16	21
Days with high ≥ 32°C (days)	3	19	27	27	26	22

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	23	24	19	14	5	2
Days with high ≥ 32°C (days)	18	17	21	21	7	2

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	20	17	25	42	72	88	92	91	82	62	36	27
Relative humidity (%)	64	54	52	57	74	82	85	86	84	82	79	75
Wind speed (km/h)	1.4	1.5	1.5	1.1	0.6	0.3	0.2	0.2	0.4	0.6	1.0	1.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	20	17	25	42	72	88
Relative humidity (%)	64	54	52	57	74	82
Wind speed (km/h)	1.4	1.5	1.5	1.1	0.6	0.3

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	92	91	82	62	36	27
Relative humidity (%)	85	86	84	82	79	75
Wind speed (km/h)	0.2	0.2	0.4	0.6	1.0	1.2

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Mae Hong Son, a weather station, about 14 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.

How we build these numbers →