Lamphun, Thailand climate

Aw Tropical savanna (dry winter)

Lamphun has a mildly seasonal tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is April with an average daily high near 37°C, while the coldest is January averaging around 15°C at night. Precipitation totals about 1160 mm a year and is strongly seasonal — September alone averages 226 mm while February barely receives 11 mm.

☀️ All year

Very hot

Daytime highs near 37°C most of the year.

🌙 Nights

Stays warm

Even the coolest nights stay near 15°C.

🌧️ Rain

Wet

About 1160 mm of rain a year.

Wettest in September

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

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)

Lamphun climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	30	33	35	37	35	33	32	32	32	32	31	29
Avg temp (°C)	23	25	28	30	29	29	28	28	28	27	25	23
Avg low (°C)	15	16	20	23	24	24	24	24	23	22	19	16
Precipitation (mm)	12	11	23	55	159	125	143	221	226	124	44	16

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	30	33	35	37	35	33
Avg temp (°C)	23	25	28	30	29	29
Avg low (°C)	15	16	20	23	24	24
Precipitation (mm)	12	11	23	55	159	125

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	32	32	32	32	31	29
Avg temp (°C)	28	28	28	27	25	23
Avg low (°C)	24	24	23	22	19	16
Precipitation (mm)	143	221	226	124	44	16

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	25	21	31	48	76	91	93	93	85	66	42	31
Relative humidity (%)	66	55	51	56	74	81	84	87	89	87	81	75
Wind speed (m/s)	0.3	0.3	0.2	0.1	0.0	0.0	0.0	0.0	0.1	0.2	0.2	0.3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	25	21	31	48	76	91
Relative humidity (%)	66	55	51	56	74	81
Wind speed (m/s)	0.3	0.3	0.2	0.1	0.0	0.0

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	93	93	85	66	42	31
Relative humidity (%)	84	87	89	87	81	75
Wind speed (m/s)	0.0	0.0	0.1	0.2	0.2	0.3

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Chiang Mai Intl, a weather station, about 21 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 →