Phayao, Thailand climate

Aw Tropical savanna (dry winter)

Phayao 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 1120 mm a year and is strongly seasonal — August alone averages 212 mm while February barely receives 3 mm.

☀️ All year

Very hot

Daytime highs near 36°C most of the year.

🌙 Nights

Stays warm

Even the coolest nights stay near 15°C.

🌧️ Rain

Wet

About 1120 mm of rain a year.

Wettest in August

⛅ 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)

Phayao climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	29	32	35	36	34	33	32	31	32	31	30	28
Avg temp (°C)	22	24	27	29	29	29	28	27	27	26	24	21
Avg low (°C)	14	15	19	23	24	24	24	23	23	22	18	15
Precipitation (mm)	13	3	30	77	169	102	141	212	202	118	37	15

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	29	32	35	36	34	33
Avg temp (°C)	22	24	27	29	29	29
Avg low (°C)	14	15	19	23	24	24
Precipitation (mm)	13	3	30	77	169	102

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	32	31	32	31	30	28
Avg temp (°C)	28	27	27	26	24	21
Avg low (°C)	24	23	23	22	18	15
Precipitation (mm)	141	212	202	118	37	15

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	26	21	31	48	75	89	92	92	82	63	40	33
Relative humidity (%)	68	58	53	58	73	80	83	86	85	82	79	75
Wind speed (mph)	2.5	2.8	3.2	3.2	3.2	3.6	3.5	3.1	2.4	2.2	2.3	2.4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	26	21	31	48	75	89
Relative humidity (%)	68	58	53	58	73	80
Wind speed (mph)	2.5	2.8	3.2	3.2	3.2	3.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	92	92	82	63	40	33
Relative humidity (%)	83	86	85	82	79	75
Wind speed (mph)	3.5	3.1	2.4	2.2	2.3	2.4

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Phayao, a weather station, about 2 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 →